Letteratura scientifica selezionata sul tema "Anxiété – Imagerie"
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Articoli di riviste sul tema "Anxiété – Imagerie"
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Hirsch, Colette R., e Emily A. Holmes. "Mental imagery in anxiety disorders". Psychiatry 6, n. 4 (aprile 2007): 161–65. http://dx.doi.org/10.1016/j.mppsy.2007.01.005.
Testo completo
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McDonald, Rita T., e William A. Hilgendorf. "Death imagery and death anxiety". Journal of Clinical Psychology 42, n. 1 (gennaio 1986): 87–91. http://dx.doi.org/10.1002/1097-4679(198601)42:1<87::aid-jclp2270420113>3.0.co;2-s.
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Palmer, Stephen. "Step-up imagery technique". Coaching Psychologist 6, n. 1 (giugno 2010): 42. http://dx.doi.org/10.53841/bpstcp.2010.6.1.42.
Testo completo
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Stephens, Rebecca L. "Imagery: A Treatment for Nursing Student Anxiety". Journal of Nursing Education 31, n. 7 (1 settembre 1992): 314–20. http://dx.doi.org/10.3928/0148-4834-19920901-08.
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Levi, Melih. "Anxiety and imagery in Attilâ Ilhan’s poetry". Middle Eastern Studies 56, n. 4 (18 marzo 2020): 653–63. http://dx.doi.org/10.1080/00263206.2020.1737932.
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Khodarahimi, Siamak. "Snake mother imagery in generalised anxiety disorder". International Forum of Psychoanalysis 19, n. 3 (settembre 2010): 165–71. http://dx.doi.org/10.1080/08037060903524407.
Testo completo
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Buff, C., C. Schmidt, L. Brinkmann, B. Gathmann, S. Tupak e T. Straube. "Directed threat imagery in generalized anxiety disorder". Psychological Medicine 48, n. 4 (24 luglio 2017): 617–28. http://dx.doi.org/10.1017/s0033291717001957.
Testo completoAbstract (sommario):
BackgroundWorrying has been suggested to prevent emotional and elaborative processing of fears. In cognitive-behavioral therapy (CBT), generalized anxiety disorder (GAD) patients are exposed to their fears during the method of directed threat imagery by inducing emotional reactivity. However, studies investigating neural correlates of directed threat imagery and emotional reactivity in GAD patients are lacking. The present functional magnetic resonance imaging (fMRI) study aimed at delineating neural correlates of directed threat imagery in GAD patients.MethodNineteen GAD patients and 19 healthy controls (HC) were exposed to narrative scripts of either disorder-related or neutral content and were encouraged to imagine it as vividly as possible.ResultsRating results showed that GAD patients experienced disorder-related scripts as more anxiety inducing and arousing than HC. These results were also reflected in fMRI data: Disorder-related v. neutral scripts elicited elevated activity in the amygdala, dorsomedial prefrontal cortex, ventrolateral prefrontal cortex and the thalamus as well as reduced activity in the ventromedial prefrontal cortex/subgenual anterior cingulate cortex in GAD patients relative to HC.ConclusionThe present study presents the first behavioral and neural evidence for emotional reactivity during directed threat imagery in GAD. The brain activity pattern suggests an involvement of a fear processing network as a neural correlate of initial exposure during directed imagery in CBT in GAD.
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Homer, Sophie R., e Catherine Deeprose. "Voluntary and Involuntary Imagery in Social Anxiety". Behavioural and Cognitive Psychotherapy 45, n. 3 (14 febbraio 2017): 285–99. http://dx.doi.org/10.1017/s1352465817000017.
Testo completoAbstract (sommario):
Background: Negative mental imagery is ubiquitous in cognitive models of social anxiety and in the social anxiety literature. Previous research has shown that it is causal of increased anxiety, lower social performance ratings and lower implicit self-esteem. Despite its prevalence, few studies have investigated this imagery directly. Aims: This study aimed to provide an in-depth analysis of the phenomenology of negative imagery experienced by socially anxious individuals, and to compare recurrent and intrusive images with images deliberately generated by participants during the study. Method: Thirty-eight undergraduate students screened to be above average in social anxiety scores completed a computerized imagery questionnaire adapted from previous qualitative work. Results: Thematic analyses revealed four major image themes for intrusive images and three for deliberately generated images including interacting with others and anxiety symptoms. Most intrusive images were based on negative episodic memories and were experienced at least fortnightly. Images were primarily visual, auditory and somatic but could involve any sensory modality. Depression anxiety stress scale (DASS-21) scores were higher in participants who experienced intrusive imagery and increased with the frequency of intrusions. Emotionality was generally higher in intrusive images than generated images. Conclusions: The phenomenology of negative imagery experienced by socially anxious individuals is idiosyncratic and may be inherently different from images generated for use in experimental research. Theoretical and clinical implications are discussed.
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Polii, Grace Benedikta, e Syenshie Virgini Wetik. "Pengaruh Guided Imagery Terhadap Tingkat Kecemasan Pasien Pre-Operasi (The Effects Of Guided Imagery On Preoperative Anxiety Level)". Jurnal Kesehatan 9, n. 2 (18 dicembre 2020): 130. http://dx.doi.org/10.46815/jkanwvol8.v9i2.106.
Testo completoAbstract (sommario):
Anxiety is a reaction to psychological disorders experienced by most patients in the face of surgery. Signs and symptoms are tremors, tachycardia, nervousness, insomnia, sweating and shortness of breath. The preoperative patient anxiety level is in the category of severe, moderate. If it is not handled properly, it will have a negative impact on the operation process that will be carried out by the patient so that relaxation measures are needed so that the patient can control his anxiety. One recommended therapy is guided imagery. Various studies have been conducted to prove its effect. The objective of this research was to analyze effects of guided imagery towards anxiety level decrease on pre-operative patients. This research used literature review design, database used were 2018- 2020 Google Scholar. Research populations were all research journals regarding effects of guided imagery and progressive relaxation towards anxiety level decrease on pre-operative patients using flow diagrams technique (data synthesis) thus n-value was obtained = 3. Analyzed journals result showed that there was a decrease in anxiety level of pre-operative patients after guided was given. Guided imagery affected the decrease of anxiety level on pre-operative patients. Kecemasan merupakan reaksi psikologis yang dialami oleh sebagian besar pasien dalam menghadapi operasi. Hal ini ditandai dengan gerakan tremor, takikardi, gelisah, susah tidur, berkeringat dan sesak nafas. Kecemasan yang dirasakan oleh pasien pra-operasi berada pada kategori berat, sedang. Apabila tidak teratasi dengan baik, maka akan menimbulkan dampak negatif bagi proses operasi yang akan dijalankan pasien sehingga dibutuhkan tindakan norfarmakologi berupa pemberian tindakan rileksasi pada pasien agar pasien mampu mengontrol perasaan cemas yang dirasakannya. Salah satu terapi yang direkomendasikan adalah guided imagery. Berbagai penelitian telah dilakukan untuk membuktikan pengaruhnya. Tujuan penelitian ini adalah untuk menganalisis pengaruh guided imagery terhadap tingkat kecemasan pasien pra-operasi. Penelitian ini menggunakan desain literature review dengan jenis database yang digunakan, yaitu Google Scholar tahun 2018-2020. Populasi penelitian adalah seluruh jurnal penelitian tentang pengaruh terapi guided imagery terhadap tingkat kecemasan pasien pra-operasi dengan menggunakan teknik diagram flow (sintesis data) sehingga didapatkan n = 3. Hasil analisis jurnal penelitian menunjukan bahwa guided imagery efektif menurunkan kecemasan pasien pra-operasi.
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Constantinou, Elena, Dora Georgiou, Maria Karekla e Georgia Panayiotou. "Subjective distress and physiological reactivity during anxiety-evoking imagery in social anxiety". Personality and Individual Differences 182 (novembre 2021): 111095. http://dx.doi.org/10.1016/j.paid.2021.111095.
Testo completoTesi sul tema "Anxiété – Imagerie"
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Baert, Sylvain. "Accompagnement psychologique du sportif blessé : imagerie et anxiété de re-blessure". Lille 3, 2011. http://www.theses.fr/2011LIL30010.
Testo completoAbstract (sommario):
Une bonne activité sportive améliore la santé, mais elle peut aussi être une source de blessure physique. Dés lors, la prise en charge médicale pourra s'accompagner d'une prise en charge psychologique. Nous présentons dans ce travail les modèles théoriques des réactions psychologiques à la blessure et une partie est spécifiquement consacrée à l'anxiété de re-blessure. Nous exposons, ensuite, des pistes pour améliorer l'accompagnement psychologique des patients comme la relaxation ou l'imagerie mentale. Nous présentons également une étude expérimentale présentant les effets de la relaxation et de l'imagerie sur différentes variables psychologiques comme l'anxiété de re-blessure ou les troubles de l'humeur. Ces résultats permettent de dresser quelques pistes pour les praticiens et la recherche dans ce domaineA good sporting activity improves health, but it can also be a source of physical injuries. Therefore, medical care should be assisted with psychological care. We're presenting in this work the theoretical models of psychological reactions to injury and part is specifically devoted to the re-injury anxiety. We're explaining ways to improve psychological assisting of patients with methods such as relaxation or imagery. Then we'll present an experimental study about the effects of relaxation and imagery on psychological variables like re-injury anxiety and mood disturbance. These results provide to draw some ideas for practitioners and research in this area
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Carey, Guillaume. "Imaging anxiety in Parkinson's disease". Electronic Thesis or Diss., Université de Lille (2022-....), 2024. https://pepite-depot.univ-lille.fr/ToutIDP/EDBSL/2024/2024ULILS023.pdf.
Testo completoAbstract (sommario):
L'anxiété dans la maladie de Parkinson (MP) est un symptôme non-moteur fréquent et invalidant dont la prise en charge est difficile. La faible connaissance des mécanismes impliqués est une limite à sa prise en charge. L'objectif de ce travail était d'identifier les mécanismes sous-jacents de l'anxiété liée à la MP, via une approche IRM cérébrale multimodale.Une revue systématique de la littérature portant sur les données d'imagerie dans l'anxiété liée à la MP a d'abord été réalisée, permettant de générer de premières hypothèses. Ensuite, plusieurs études incluant des analyses en IRM cérébrale structurale et fonctionnelle ont été menées chez des patients atteints de MP et présentant ou non une anxiété cliniquement significative. Nos analyses se sont focalisées sur le circuit de la peur, connu pour être impliqué dans les troubles anxieux, et le circuit cortico-striato-thalamo-cortical limbique, connu pour son implication dans les symptômes psycho-comportementaux de la MP.Nos résultats suggèrent que l'anxiété liée à la MP serait la conséquence d'un déséquilibre fonctionnel et structural entre ces deux circuits. Certaines structures communes, comme le thalamus, le striatum ou les noyaux du tronc cérébral, pourraient être des zones clés dont l'altération pourrait expliquer la forte prévalence de ces troubles dans la MP. D'autres travaux s'appuyant notamment sur les avancées technologiques en imagerie et sur de nouveaux concepts concernant la physiopathologie de la MP, seront nécessaires pour répondre à ces questionsAnxiety in Parkinson's disease (PD) is a frequent and disabilitating non-motor symptom. It is difficult to manage, partly due to a poor knowledge of the underlying mechanisms. The objective of this thesis was to identify the underlying mechanisms of PD-related anxiety, using multimodal brain MRI.A systematic review of the literature on imaging data in PD-related anxiety was first carried out, allowing the generation of initial hypotheses. Then, several studies including structural and functional brain MRI analyses were carried out in PD patients with or without clinically significant anxiety. Our analyses focused on the fear circuit, known to be involved in anxiety disorders and fear processing, and the limbic cortico-striato-thalamo-cortical circuit, known for its involvement in the neuropsychiatric symptoms of PD.Our results suggest that PD-related anxiety is the consequence of a functional and structural imbalance between these two circuits. Certain overlapping structures, such as the thalamus, the striatum or the brainstem nuclei, could be key areas whose alteration could explain the high prevalence of these disorders in PD. Further works based in particular on technological advances in imaging and new concepts concerning the pathophysiology of PD will be necessary to answer the remaining questions
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Chavanne, Alice. "Neural correlates of categorical and dimensional anxiety". Electronic Thesis or Diss., université Paris-Saclay, 2024. http://www.theses.fr/2024UPASL014.
Testo completoAbstract (sommario):
Les troubles anxieux sont très répandus et représentent une lourde charge de morbidité. Cependant, malgré une abondante littérature sur la neuro-imagerie à l’échelle du groupe, des marqueurs cérébraux robustes de vulnérabilité ou de réponse thérapeutique peinent à émerger. Ces dernières années, les approches de prédiction à l’échelle individuelle utilisant l'apprentissage automatique sont devenues de plus en plus populaires dans la recherche en santé mentale, et certains résultats prometteurs ont été rapportés dans des études de neuro-imagerie à petite échelle (généralement avec Ntotal < 60 participants). Ces résultats n'ont pas encore été reproduits dans des échantillons plus importants et multisites. Le présent projet de doctorat impliquait l'utilisation de l'apprentissage automatique supervisé pour prédire prospectivement le développement de troubles anxieux chez les adolescents en utilisant un jeu de données longitudinales de la population générale, IMAGEN, ainsi que pour prédire la réponse au traitement psychothérapeutique chez les patients phobiques en utilisant le jeu de données SPIDER-VR. Avec les données IMAGEN, des analyses d'apprentissage automatique ont été réalisées à partir de questionnaires et de données neuroanatomiques d'adolescents non anxieux, afin de prédire le développement d'un futur trouble anxieux (N = 156) par rapport à un statut de contrôle sain (N = 424). L'étude a souligné le potentiel prédictif des données sociodémographiques et issues de questionnaires pour la prédiction de futurs troubles anxieux regroupés, et celui des volumes de matière grise pour la prédiction d'un trouble anxieux généralisé. Les mesures d'IRM fonctionnelle extraites d'une tâche de traitement émotionnel des visages n'ont pas produit de performance prédictive supérieure au niveau de chance. Avec les données SPIDER-VR, des analyses d'apprentissage automatique ont été menées pour prédire la réponse des patients phobiques des araignées (N = 190) à une session de thérapie d'exposition en réalité virtuelle, en utilisant des données de questionnaires, des données d'IRM structurelle et diverses mesures d'IRM fonctionnelle extraites d'une tâche de provocation des symptômes. Contrairement aux attentes, l'étude n'a pas confirmé le potentiel prédictif des données sociodémographiques et de questionnaires, ni des données de neuro-imagerie, à l'exception de la variance du signal BOLD qui a produit une performance prédictive modérée. Dans l'ensemble, ce travail de doctorat remet en question les résultats optimistes d'études antérieures à plus petite échelle sur la prédiction de l'anxiété par apprentissage automatique basé sur la neuro-imagerie. Néanmoins, les résultats corroborent le fait que des questionnaires faciles à administrer présentent une performance prédictive prometteuse pour la prédiction de l'apparition de l'anxiété et que l'IRM structurelle puisse apporter une valeur prédictive supplémentaire. Divers autres biomarqueurs de l'anxiété sont apparus dans la littérature avec le potentiel d'améliorer la précision des prédictions relatives à l'anxiété, et d'autres recherches multimodales utilisant des jeux de données à grande échelle ainsi qu'une méthodologie rigoureuse d'apprentissage automatique sont nécessaires pour atteindre l'utilité cliniqueAnxiety disorders are highly prevalent and represent a heavy burden of disease. However, despite a large group-level neuroimaging literature, robust brain markers of vulnerability or therapeutic response struggle to emerge. In recent years, individual-level prediction approaches using machine-learning have become increasingly popular in mental health research, and some promising results have been reported in small-scale neuroimaging studies (usually with Ntotal < 60 participants). These prediction results have yet to be replicated in larger, multisite samples. The present doctoral project involved the use of supervised machine-learning to prospectively predict the development of anxiety disorders in adolescents using a longitudinal dataset from the general population, IMAGEN, as well as to predict the response to psychotherapeutic treatment in phobic patients using the SPIDER-VR dataset. With IMAGEN data, machine-learning analyses were conducted using questionnaire and neuroanatomical data of non-anxious adolescents, to predict the development of a future anxiety disorder (N = 156) vs. healthy control status (N = 424). The study supported the predictive potential of sociodemographic and questionnaire data for the future onset of pooled anxiety disorders, and of gray matter volumes for future generalized anxiety disorder onset. Functional MRI metrics extracted from an emotional face processing task did not yield any above-chance level predictive performance. With SPIDER-VR data, machine learning analyses were conducted to predict the response of patients with spider phobia (N = 190) to a virtual reality exposure therapy session, using questionnaire data, structural MRI data, and various functional MRI metrics extracted from a symptom provocation task. Contrastingly to expectations, the study did not support the predictive potential of sociodemographic and questionnaire data nor neuroimaging data, with the exception of BOLD signal variance which yielded moderate predictive performance. Overall, this doctoral work challenges optimistic results from earlier smaller-scale neuroimaging- based machine-learning prediction studies in anxiety. Nonetheless, findings substantiate that easy-to-administer questionnaires show promising predictive performance for anxiety onset prediction and that structural MRI might bring incremental predictive value. Various other anxiety biomarkers have emerged in the literature with potential to improve the accuracy of anxiety-relevant predictions, and further multimodal research using large-scale datasets alongside rigorous machine- learning methodology are needed in an effort to reach clinical utility
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Comte, Magali. "Neuro-imagerie fonctionnelle du circuit cortico-limbique lors du traitement émotionnel chez le patient schizophrène et le volontaire sain". Thesis, Aix-Marseille, 2015. http://www.theses.fr/2015AIXM5071/document.
Testo completoAbstract (sommario):
Au sein du circuit cortico-limbique, des régions complémentaires seraient impliquées soit dans l’évaluation soit dans la régulation des états affectifs. Cependant, la contribution respective de ces mécanismes «bottom-up» et «top-down» lors du traitement émotionnel reste à clarifier. Premièrement, nous avons validé un nouveau paradigme d’IRMf conçu pour dissocier les composants du circuit cortico-limbique, c.-à-d. le circuit dorsal cognitif entrecroisé avec le circuit ventral affectif. Nous avons trouvé que l’amygdale et ses connexions avec le circuit dorsal étaient engagées par le traitement émotionnel bottom-up. Le cortex cingulaire antérieur (CCA) dorsal et ses connexions avec le cortex préfrontal dorso-latéral (CPFDL) et l’amygdale étaient recrutés par la résolution top-down du conflit émotionnel. Le CPFDL et ses connexions avec le CCA dorsal étaient engagés par le contrôle attentionnel top-down. Puis, nous avons examiné l’impact de l’anxiété sur le circuit. Nous avons montré qu’une forte anxiété était associée à une activation plus importante du CCA en réponse au conflit émotionnel mais à une connectivité réduite entre CCA et CPFL. Enfin, nous avons examiné la variation d’activité et de connectivité fonctionnelle chez des patients schizophrènes. Chez les patients comparativement aux témoins, les processus bottom-up étaient associés à une interaction réduite entre l’amygdale et le CCA ventral et dorsal ainsi que le CPFDL. La résolution du conflit émotionnel entraînait une plus forte connectivité entre CCA dorsal et CCA ventral ainsi que le CPFDL. L’augmentation du contrôle attentionnel provoquait une connectivité plus importante entre le CPFDL et le CCA ventralWithin the cortico-limbic circuit, complementary regions are believed to be involved in either the appraisal or the regulation of affective state. However, the respective contribution of these bottom-up and top-down mechanisms during emotion processing remains to be clarified. First, we validated a new fMRI paradigm designed to dissociate the components of the cortico-limbic circuit, that is, the dorsal cognitive circuit intertwined with the ventral affective circuit. We found that the amygdala and its connections to the dorsal circuit was engaged by bottom-up emotional processing. The dorsal anterior cingulate cortex (ACC) and its connections to the dorsolateral prefrontal cortex (DLPFC) and amygdala, was recruited by top-down resolution of emotional conflict. The DLPFC and its connections to dorsal ACC was engaged by top-down attentional control. Secondly, we investigated the impact of anxiety on the circuit. We demonstrated that higher levels of anxiety were associated with stronger conflict-related activation in ACC but with reduced connectivity between ACC and LPFC. Finally, we examined the variation in functional activity and connectivity in schizophrenia patients. In patients compared to controls, bottom-up processes were associated with reduced functional interaction between the amygdala and both dorsal and ventral ACC as well as DLPFC. Top-down resolution of emotional conflict led to stronger functional connectivity between the dorsal ACC and both ventral parts of ACC and DLPFC. Increased top-down attentional control caused higher functional coupling between the DLPFC and ventral ACC
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Noël, Audrey. "Ictus amnésique idiopathique : neuropsychologie, neuroimagerie et psychopathologie". Caen, 2007. http://www.theses.fr/2007CAEN1493.
Testo completoAbstract (sommario):
L’objectif de cette thèse visait d’une part à mieux comprendre le rôle des facteurs psychopathologiques dans le déclenchement, le déroulement et la récupération de l’épisode d’ictus amnésique idiopathique (IA) et d’autre part à éclaircir les mécanismes physiopathologiques à l’origine des troubles. Nos résultats montrent que les troubles psychopathologiques peuvent être considérés comme des facteurs de prédisposition au déclenchement de certains épisodes d’IA. D’autre part, nous avons tenté de mieux caractériser l’IA et nous avons ainsi mis en évidence que l’IA n’est pas seulement un trouble de mémoire, puisqu’il s’accompagne d’une augmentation du niveau d’anxiété et d’une altération de l’humeur pendant l’épisode aigu. Nous avons également démontré que l’anxiété et l’humeur peuvent affecter les performances mnésiques des patients après l’épisode. En effet, les patients les plus anxieux et les plus déprimés obtenaient des performances inférieures aux autres patients, plusieurs mois après l’épisode. Ces résultats suggèrent que les troubles psychopathologiques peuvent ralentir les processus de récupération des capacités mnésiques après un IA. Toutefois, il est peu probable que ces troubles psychopathologiques soient entièrement responsables des perturbations mnésiques persistantes. Notre dernière étude confirme cette hypothèse puisque nous avons observé, grâce à l’IRM, une légère atrophie bilatérale des lobes temporaux internes incluant les deux hippocampes. Cette thèse a donc permis de souligner l’importance des facteurs psychopathologiques dans l’IA et leur interaction avec le fonctionnement mnésique
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Caumeil, Benjamin. "Etude des déterminants de l'anxiété de re-blessure chez le sportif : Identification de profils psychologiques et étude de l'efficacité d'une intervention d'imagerie mentale auprès de sportifs blessés au ligament croisé antérieur". Thesis, Bordeaux, 2020. http://www.theses.fr/2020BORD0082.
Testo completoAbstract (sommario):
Résumé : Lors du retour au sport, les sportifs blessés sont exposés à des émotions et cognitions négatives spécifiques. Ce vécu psychologique a donné lieu à l’émergence du concept d’anxiété de re-blessure, dont les conséquences portent également sur la performance et la santé physique du sportif au vu du risque accru de re-blessure qui y est associé. Si certains travaux scientifiques récents ont permis d’améliorer la prédiction de l’anxiété de re-blessure ainsi que d’évaluer l’efficacité d’interventions psychologiques visant à la réduire, de nombreux domaines d’étude restent à approfondir en lien avec ce concept. Ce travail doctoral, structuré des articles scientifiques rédigés et soumis pendant la thèse ainsi que de ceux qui pourront en découler de façon prioritaire, proposera donc d’étudier le concept d’anxiété de re-blessure en référence à 5 objectifs complémentaires. Le premier chapitre de ce travail présentera une revue systématique de littérature visant à mieux identifier les déterminants de l’anxiété de re-blessure et des autres concepts proches, tout en précisant leurs définitions. Cette revue souligne l’importance de privilégier le concept d’anxiété de re-blessure pour décrire les réactions psychologiques du sportif reprenant la pratique sportive après blessure. Le second chapitre portera sur l’adaptation et une validation en langue française d’un outil de mesure de l’anxiété de re-blessure. L’étude de la structure factorielle de l’outil permet, au-delà du score global issu du questionnaire, l’identification de trois sous-dimensions : la peur de se re-blesser, l’anxiété de contre-performance et les manifestations anxieuses. Le troisième chapitre proposera d’étudier les déterminants de l’anxiété de re-blessure à l’aide d’analyses de régression et de modèles de médiation et de modération. Les résultats montrent que le stress, la symptomatologie anxieuse et le genre prédisent l’anxiété de re-blessure de façon directe, mais également indirecte au vu des effets médiateurs et modérateurs traduisant leurs interactions avec d’autres caractéristiques psychologiques. L’utilisation d’un modèle croisé décalé permet également de montrer le rôle du stress dans la prédiction de l’anxiété de re-blessure dans une perspective longitudinale. Le quatrième chapitre proposera de tester l’existence de profils psychologiques liés à l’anxiété de re-blessure. Les analyses en clusters réalisées mettent en évidence quatre profils différents, au sein desquels apparaissent deux profils caractérisé par la présence de l’anxiété de re-blessure et d’autres émotions négatives (l’un à un niveau modéré, l’autre à un niveau élevé), un profil caractérisé par un faible niveau d’anxiété de re-blessure, et un dernier profil caractérisé par un niveau d’anxiété de re-blessure « intermédiaire » et surtout par le manque de confiance que le sportif accorde à la partie du corps blessé. Enfin, le cinquième chapitre présentera le travail d’élaboration et de mise en place ainsi que l’évaluation de l’efficacité d’une intervention d’imagerie mentale de type Visuo-Motor Behavior Rehearsal (VMBR) proposée à des sportifs ayant subi une intervention chirurgicale du ligament croisé antérieur dans le cadre d’un protocole randomisé contrôlé. L’intervention s’avère efficace sur la réduction de l’anxiété de re-blessure, du stress et de la douleur. Par ailleurs, elle permet de renforcer d’autres facteurs protecteurs tels que l’optimisme et la recherche de soutien social. L’intervention permet également aux athlètes de revenir plus rapidement au sport que ceux ne l’ayant pas reçue. La synthèse générale de ce travail proposera de déterminer les conditions de généralisation des principaux résultats obtenus tout en identifiant les perspectives d’applications rendues possibles dans le champ sportif dans la prise en charge d’autres problématiques sportives mais également auprès d’autres populations confrontés à des enjeux de performance ou exposés à des risques de blessureAbstract : When returning to sports, athletes are exposed to specific negative cognitions and emotions. One of these negative emotions was named re-injury anxiety. The consequences of re-injury anxiety could lead to an impact on performance and physical well-being, increasing the risk of re-injury. The psychological aftermath of re-injury anxiety have been depicted with increasing interest in literature, and interventions decreasing this specific emotion, many gaps in literature remain to be developed. The purpose of this doctoral work, with published scientific articles, will study the concept of re-injury anxiety in reference to five complementary objectives. The first chapter of the thesis will present a systematic review of the literature, highlighting the factors of re-injury anxiety and other close concepts. This review of literature will demonstrate the importance in prioritising the concept of re-injury anxiety to describe psychological reactions when an athlete return to sport after an injury. The second chapter will focus on the adaptation and a validation in French language of a measuring tool for re-injury anxiety. Exploratory and confirmatory factorial analysis allowed us to identify three subscales of this specific anxiety : the latter will be named : fear of re-injury, performance anxiety and signs of anxiety. The third chapter will propose the study of the factors of re-injury anxiety with regression analysis, mediation and moderation models. The results showed that stress, anxious symptomatology and gender were directly predicting re-injury anxiety, and also indirectly with mediating and moderating effects, describing their interactions with other psychological characteristics. Using cross-lagged models allowed us to identify the signification of stress in predicting re-injury anxiety in a longitudinal perspective. In the fourth chapter, we will investigate the psychological cluster related to re-injury anxiety. Cluster analysis highlighted four different profiles with 2 specific profiles characterised by high level of re-injury anxiety and other negative emotions (i.e., one with moderate level, and one with very high level of re-injury anxiety). An other profile was characterised by a low re-injury anxiety level, and the last profile was characterised with average re-injury anxiety especially with very low knee confidence. Finally, the fifth chapter will discuss the psychological interventions which can be proposed to athletes expressing re-injury anxiety. The fifth part of this work will present the implementation in a rehabilitation center of a controlled randomised interventional protocol based on mental imagery like Visuo-Motor Behavior Rehearsal (VMBR) on athletes who injured at anterior cruciate ligament. The intervention turns out to be efficient on the reduction of negative effects caused by the injury such as re-injury anxiety, stress but also pain. Besides, it allows the increased mobilisation of protective factors such as optimism and social support seeking. Resorting to a VMBR-like intervention also allows athletes to return to sport faster than those who didn’t. The general synthesis of this thesis will offer to generalise the principal results obtained while identifying the perspectives of application of the results in other types of interventions, contexts, or in other populations
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Batail, Jean-Marie. "Aspects cliniques et neurofonctionnels impliqués dans le cours évolutif de la dépression : l’expérience d’une cohorte en soins courants". Thesis, Rennes 1, 2018. http://www.theses.fr/2018REN1B055/document.
Testo completoAbstract (sommario):
Le but de ce travail est d’étudier deux dimensions sémiologiques, identifiées dans la littérature comme associées au trouble dépressif résistant, l’anxiété et l’apathie. Ces marqueurs cliniques et leurs corrélats radiologiques seront ensuite testés dans une analyse longitudinale du pronostic à 6 mois d’une cohorte de patients souffrant de dépression. Les données originales de ce travail sont issues de la cohorte LONGIDEP. Cette étude prospective, naturalistique, a été menée chez des patients souffrant d’un épisode dépressif majeur qui bénéficiaient, dans le cadre des soins courants, d’une évaluation clinique, neuropsychologique et d’une imagerie cérébrale à l’inclusion. Une nouvelle évaluation a été proposée à 6 mois de l’inclusion. Cette étude nous a permis de montrer que 1) l’apathie dans la dépression est associée à un profil clinique et physiopathologique spécifique, 2) l’analyse catégorielle et sémiologique de l’anxiété dans une population de sujet déprimés résistants n’étaient pas concordantes. Les déprimés résistants présentaient une hyperperfusion amygdale centro-médiane, 3) l’anxiété trait, un pattern cognitif associé à la mémoire visuo-spatiale étaient prédictifs d’une évolution péjorative de la dépression. Des anomalies structurales de régions impliquées dans la régulation émotionnelle et plus précisément l’adaptation au danger/peur, étaient associées à une évolution péjorative de la dépression. Des deux dimensions sémiologiques étudiées, l’anxiété apparaît être impliquées dans le pronostic de la dépression. L’étude des liens entre l’anxiété et les troubles de la motivation est une perspective de recherche pour la dépression résistanteThe aim of this work is to study anxiety and apathy in treatment resistant depression. These clinical factors and its imaging correlates will be tested in prediction of outcome in a 6-months follow-up. Original data were retrieved in LONGIDEP cohort. This is a prospective study conducted in routine care. Patients suffering from a mood depressive episode benefited from a clinical, neuropsychological and brain imaging. They were assessed once again at 6 months. Our study has shown that 1) apathy in depression is associated with specific clinical and pathophysiological patterns, 2) categorical and dimensional approach of anxiety in treatment resistant depression are not convergent. This latter population exhibited higher brain perfusion of centro-medial amygdala, 3) trait anxiety, cognitive patterns of visuospatial memory were predictive of pejorative outcome. Structural abnormalities in key regions involved in emotion regulation were associated with pejorative outcome of depression. Only anxiety was involved in outcome of depression. The link between anxiety and motivation should be studied in further works
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Moulinet, Inès. "Vers une meilleure compréhension des facteurs psychoaffectifs (anxiété et dépression) dans le vieillissement normal et pathologique : liens avec la cognition et la neuroimagerie multimodale Sex-specificities in anxiety and depressive symptoms across the lifespan and their links with multimodal neuroimaging Relationships of depressive symptoms to brain markers of neurodegeneration and amyloid deposition across the Alzheimer’s continuum Cross-sectional and longitudinal characterization of SCD patients recruited from the community versus from a memory clinic: subjective cognitive decline, psychoaffective factors, cognitive performances, and atrophy progression over time". Thesis, Normandie, 2020. http://www.theses.fr/2020NORMC422.
Testo completoAbstract (sommario):
Les symptômes psychoaffectifs anxieux et dépressifs infra-cliniques sont fréquents chez les personnes âgées et sont associés à un risque accru de développer une démence et de progresser d’un stade prédémentiel à un stade démentiel. Cependant, ils pourraient également être des symptômes associés à une démence, et pourraient constituer une manifestation clinique de la pathologie sous-jacente. L’objectif de cette thèse était de contribuer à une meilleure compréhension des liens entre symptômes anxieux et dépressifs et les modifications cognitives et cérébrales structurales, fonctionnelles et moléculaires typiques de la maladie d’Alzheimer (MA), à la fois dans le vieillissement normal et au cours de cette pathologie. Nos résultats montrent que des symptômes anxieux élevés sont associés à un volume de substance grise plus bas chez les sujets âgés cognitivement sains, et ce uniquement chez les femmes. Cette même association est présente chez les sujets Subjective Cognitive Decline (SCD) recrutés dans la population générale, et montre une vulnérabilité accrue aux maladies neurodégénératives liées à l’âge, telles que les démences. Chez les SCD ayant consulté pour leur déclin cognitif subjectif, des symptômes dépressifs élevés sont associés à une charge amyloïde plus importante dans le cerveau, et donc à un risque accru de développer une MA, tandis que chez les sujets Mild Cognitive Impairment (MCI) et MA amyloïde positifs, ils sont liés à une meilleure cognition et conscience de ses propres troubles. Les symptômes psychoaffectifs semblent donc avoir un rôle évolutif au cours du passage du vieillissement normal au vieillissement pathologique, d’abord manifestation d’une vulnérabilité cérébrale, puis manifestation d’une pathologie sous-jacente et d’un risque de développement de MA, ils sont au contraire un marqueur de préservation chez les patients présentant un déclin cognitif (MCI et MA)Subclinical psychoaffective symptoms of anxiety and depression are common in the elderly and are associated with an increased risk of developing dementia and progressing from a pre-dementia stage to a dementia stage. However, they could also be symptoms associated with dementia and could be a clinical manifestation of the underlying pathology. The aim of this thesis was to contribute towards a better understanding of the links between anxiety and depressive symptoms and Alzheimer's disease (AD) hallmarks, including cognitive, structural, functional and molecular modifications, both in normal aging and during the course of this pathology. Our results show that higher anxiety symptoms are associated with lower grey matter volume in cognitively healthy elderly subjects, but only in women. This same association is present in all Subjective Cognitive Decline (SCD) participants recruited from the general population, and shows an increased vulnerability to age-related neurodegenerative diseases such as dementia. In Subjective Cognitive Decline (SCD) subjects, high depressive symptoms are associated with greater amyloid load in the brain, and thus an increased risk of developing AD, while in amyloid-positive Mild Cognitive Impairment (MCI) and AD subjects, they are related to better cognition and awareness of their cognitive deficits. Psychoaffective symptoms thus seem to have an evolving role during the transition from normal aging to pathological aging; they first manifest a brain vulnerability, then an underlying pathology and a risk of developing AD, and then are a marker of preservation in patients with cognitive decline (MCI and AD)
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Shinner, Mary. "An investigation of the role of imagery in anxiety". Thesis, University of Oxford, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.260234.
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Stratford, Hannah Joy. "Anxiety and bipolar spectrum disorders : psychological treatments and mental imagery". Thesis, University of Oxford, 2013. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.599903.
Testo completoAbstract (sommario):
Anxiety is a clinically significant feature of bipolar spectrum disorders [BP]. The. rate of anxiety symptoms and/or comorbid anxiety diagnoses is high, and it contributes to worse outcomes in a range of domains. There is an accumulation of evidence that psychological therapy is effective for anxiety, which is not so for BP. Mental imagery is implicated in the maintenance of anxiety and is a promising avenue of research in BP. A cognitive model of bipolar disorder posits that imagery is an emotional amplifier in mania and anxiety. Paper A presents a systematic review of the literature of psychological therapies for anxiety in BP. Twenty-two studies were identified, though no formal synthesis was possible. Preliminary data for CBT for obsessive compulsive disorder, generalised anxiety disorder, and post-traumatic stress disorder in a BP population are promising, and further research is warranted. Furthermore, the addition of an anxiety module to CBT for BP effectively reduces anxiety, and may have additional benefits in other domains. Pilot research applying other evidence-based CBT treatments for comorbid anxiety is indicated, as are RCTs for CBT for cyclothymia and rapid cycling BP. The addition of an anxiety module may Improve the effectiveness of psychological therapy for BP, further review and research is necessary to explore this. Paper B presents an empirical study, com paring imagery processes in adults with BP (currently euthymic), mixed anxiety disorders, and non-clinical controls. Genera imagery use, intrusive and deliberate prospective imagery, and characteristics of image ' during different mood states are explored. People with anxiety have high levels 0 general imagery use and intrusive prospective imagery. Unlike the clinical groups, the control group appears to have a bias against negative imagery in a deliberate prospective imagery task. Retrospective report of mental imagery during past low, anxious and high mood states gives partial support to the imagery as an emotional amplifier theory, and similarities between the clinical groups may illuminate the high rates of comorbidity. Future research is discussed.
Libri sul tema "Anxiété – Imagerie"
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Reid, Louise. Techniques faciles pour vaincre l'anxiété: Sans médicament ni thérapie. 4a ed. Montréal (Québec): Éditions Québec-Livres, une société de Québecor Média, 2014.
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Olasov, Rothbaum Barbara, a cura di. Pathological anxiety: Emotional processing in etiology and treatment. New York: Guilford Press, 2005.
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Dolan, Anna T. Imagery treatment of phobias, anxiety states, and other symptom complexes in Akhter Ahsen's Image psychology. New York: Brandon House, 1997.
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Hainsworth, Karen. High and low public speaking anxiety: Differences in control, vividness and specificity of imagery. [London]: University of Surrey Roehampton, 2000.
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Esplen, Mary Jane. A pilot study to explore student musicians' self-reports of the experience of guided imagery and its impact on musical performance anxiety. Ottawa: National Library of Canada = Bibliothèque nationale du Canada, 1992.
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Reznick, Charlotte. The Power of Your Child's Imagination. New York: Penguin USA, Inc., 2009.
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The effects of imagery control training on imagery abilities and anxieties. 1989.
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Wadleigh, Paul Mark. Comparing the Betts' mental imagery capacity of low and high communication apprehensives. 1995.
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Rapee, Ronald M., Peter M. McEvoy e Lisa M. Saulsman. Imagery-Enhanced CBT for Social Anxiety Disorder. Guilford Publications, 2017.
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Rapee, Ronald M., Peter M. McEvoy e Lisa M. Saulsman. Imagery-Enhanced CBT for Social Anxiety Disorder. Guilford Publications, 2018.
Cerca il testo completoCapitoli di libri sul tema "Anxiété – Imagerie"
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Brodsky, Stanley L. "Imagery to Reduce Anxiety." In Coping with cross-examination and other pathways to effective testimony., 33–36. Washington: American Psychological Association, 2004. http://dx.doi.org/10.1037/10748-006.
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Finch, Katherine K., e Jonathan M. Oakman. "Applied Mental Imagery and Music Performance Anxiety". In Music and Mental Imagery, 221–30. London: Routledge, 2022. http://dx.doi.org/10.4324/9780429330070-24.
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Suinn, Richard M. "Management of Relaxation, Imagery, or Clients in a Group Setting". In Anxiety Management Training, 261–82. Boston, MA: Springer US, 1990. http://dx.doi.org/10.1007/978-1-4899-3567-0_9.
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Martin, Maryanne. "Selective Enhancement of Imagery in Anxiety". In Cognitive and Neuropsychological Approaches to Mental Imagery, 327–36. Dordrecht: Springer Netherlands, 1988. http://dx.doi.org/10.1007/978-94-009-1391-2_30.
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Vemu, Shanmukha Priya, e Geeta Sunkarapalli. "Imaging Capability, Absorption, Anxiety, Positive and Negative Affect: A Guided Imagery Intervention". In Applied Psychology Readings, 305–24. Singapore: Springer Singapore, 2018. http://dx.doi.org/10.1007/978-981-10-8034-0_18.
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Mcdonald, Rita T., e Carolyn J. Salyards. "Death Imagery and Death Anxiety". In Healing with Death Imagery, 179–202. Routledge, 2018. http://dx.doi.org/10.4324/9781315224480-8.
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Thompson, Larry W., Leah Dick-Siskin, David W. Coon, David V. Powers e Dolores Gallagher-Thompson. "Module 5: Feeling Tools". In Treating Late Life Depression, a cura di Larry W. Thompson, Leah Dick-Siskin, David W. Coon, David V. Powers e Dolores Gallagher-Thompson, 101–28. Oxford University Press, 2009. http://dx.doi.org/10.1093/med-psych/9780195383706.003.0005.
Testo completoAbstract (sommario):
This chapter discusses feeling tools to help with CBT for late-life depression, including the importance of relaxation, awareness of anxiety, keeping a tension diary, relaxation training, as well as imagery as a tool to challenge negative thoughts and stress management, and the management of frustration and anger.
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Gallagher-Thompson, Dolores, e Larry W. Thompson. "Module 5: Feeling Tools". In Treating Late Life Depression, a cura di Dolores Gallagher-Thompson e Larry W. Thompson, 153–78. Oxford University Press, 2009. http://dx.doi.org/10.1093/med-psych/9780195383690.003.0008.
Testo completoAbstract (sommario):
This chapter discusses fifth module of CBT for late-life depression, which explores feeling tools, including the importance of relaxation, awareness of anxiety, keeping a tension diary, relaxation training, as well as imagery as a tool to challenge negative thoughts and stress management, and the management of frustration and anger.
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Craske, Michelle G., Halina J. Dour, Michael Treanor e Alicia E. Meuret. "Attending to the Positive". In Positive Affect Treatment for Depression and Anxiety, a cura di Michelle G. Craske, Halina J. Dour, Michael Treanor e Alicia E. Meuret, 83–110. Oxford University PressNew York, 2022. http://dx.doi.org/10.1093/med-psych/9780197548523.003.0006.
Testo completoAbstract (sommario):
Abstract This chapter covers the skills of shifting attention toward positive stimuli and improving prospective positive mental imagery. The skills address deficits in anticipation of reward by having clients learn to attribute their actions to positivity. Target attention is vital since the evidence shows that depressed mood and anhedonia are associated with limited sustained attention to positive stimuli. Focus on past experiences is achieved by re-evaluating situations. The skill of finding the silver linings is introduced, but therapists should know this sometimes triggers trauma, panic, and anxiety. The chapter emphasizes that diminishing self-attribution for positive outcomes limits the learning of reward.
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Meuret, Alicia E., Halina J. Dour, Amanda G. Loerinc Guinyard e Michelle G. Craske. "Building Positivity". In Positive Affect Treatment for Depression and Anxiety, a cura di Alicia E. Meuret, Halina J. Dour, Amanda G. Loerinc Guinyard e Michelle G. Craske, 85–112. Oxford University PressNew York, 2022. http://dx.doi.org/10.1093/med-psych/9780197548608.003.0007.
Testo completoAbstract (sommario):
Abstract This chapter explores the importance and function of Building Positivity as part of the Positive Affect Treatment (PAT) program. It explains the process and provides case studies of practicing loving-kindness, appreciative joy, gratitude, and generosity. Evidence shows that engaging in gratitude and generosity leads to feeling more connected, having better relationships, and doing more prosocial behavior. Loving-kindness and appreciative joy are skills that use imagery and positive thinking to enhance relationships and change feelings. The chapter also discusses research showing that these practices increase positive emotions and well-being and decrease negative emotions. PAT’s Building Positivity exercises are strategies to improve mood, appreciate positive feelings, and form connections.
Atti di convegni sul tema "Anxiété – Imagerie"
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Parnabas, Vincent A., e Yahaya Mahamood. "Anxiety and imagery of green space among athletes". In Environment (ISESEE). IEEE, 2011. http://dx.doi.org/10.1109/isesee.2011.5977126.
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Suttirak, Nasome, e Panurushthanon Phichayavee. "The Effect Of Imagery And Modeling On Anxiety In Netball Athletes". In Proceedings of the 8th ACPES (ASEAN Council of Physical Education and Sport) International Conference, ACPES 2022, October 28th – 30th, 2022, Medan, North Sumatera, Indonesia. EAI, 2023. http://dx.doi.org/10.4108/eai.28-10-2022.2327453.
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Dharmayana, I. Wayan, e Issrahli Shaddri. "The Effect of Guided Imagery Techniques to Decrease Students’ Anxiety in Group Counseling Activities". In Proceedings of the 3rd Asian Education Symposium (AES 2018). Paris, France: Atlantis Press, 2019. http://dx.doi.org/10.2991/aes-18.2019.71.
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Alim, Abdul, e Muhammad Yanuar Khilman. "The Development of Practice-based Audio Imagery to Reduce the Anxiety Level Tennis Athlete". In The 3rd Yogyakarta International Seminar on Health, Physical Education, and Sport Science (YISHPESS 2019) in conjunction with The 2nd Conference on Interdisciplinary Approach in Sports (CoIS 2019). SCITEPRESS - Science and Technology Publications, 2019. http://dx.doi.org/10.5220/0009800506640668.
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Li, Qiuwen. "Text vs. Images: Understanding emotional expressions on social media during COVID-19 pandemic". In 13th International Conference on Applied Human Factors and Ergonomics (AHFE 2022). AHFE International, 2022. http://dx.doi.org/10.54941/ahfe1002031.
Testo completoAbstract (sommario):
Due to the global spread of COVID-19, people all around the world have been forced to change the way they communicate and interact with others. Keeping social distance and wearing masks helps prevent the spread of coronavirus, and also makes online social platforms increase in demand in an unprecedented way (Flynn, 2008). Prolonged social isolation during COVID-19 is likely to have negative effects on mental health and communication on an individual. Researchers have found evidence for caused and elevated anxiety disorders such as somatization, post-traumatic stress disorder, panic disorders and depression amongst individuals during the COVID-19 pandemic (Meikle, 2016). Numerous studies have found that people only show their “good side” and positive emotions on social media. How does social media reveal our anxiety disorders during Covid? Do emotions expressed in pictures match with its text content on social media? In this research, 500 most recent selfies from individual accounts between December 1st and 10th in 2021 from age ranges 13 to 55 years old were downloaded for the study. The study used IBM Watson tone analyzer and Sky-Biometry as tools for linguistic analysis and emotion detection. In addition, the research compared imagery and text content in social media as a function of emotional expression and methods.Keywords: Emotional Expressions, Communication, Social Media, COVID-19, Photography Posts, Text, Instagram, Social Network, Attention Theory, Mental Health
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Seiça, Mariana, Pedro Martins, Licínio Roque e F. Amílcar Cardoso. "A Sonification Experience to Portray the Sounds of Portuguese Consumption Habits". In ICAD 2019: The 25th International Conference on Auditory Display. Newcastle upon Tyne, United Kingdom: Department of Computer and Information Sciences, Northumbria University, 2019. http://dx.doi.org/10.21785/icad2019.050.
Testo completoAbstract (sommario):
The stimuli for consumption is present in everyday life, where major retail companies play a role in providing a large range of products every single day. Using sonification techniques, we present a listening experiment of Portuguese consumption habits in the course of ten days, gathered from a Portuguese retail company. We focused on how to represent this time-series data as a musical piece that would engage the listener’s attention and promote an active listening attitude, exploring the influence of aesthetics in the perception of auditory displays. Through a phenomenological approach, ten participants were interviewed to gather perceptions evoked by the piece, and how the consumption variations were un-derstood. The tested composition revealed relevant associations about the data, with the consumption context indirectly present throughout the emerging themes: from the idea of everyday life, routine and consumption peaks to aesthetic aspects as the passage of time, frenzy and consumerism. Documentary, movie imagery and soundtrack were also perceived. Several musical aspects were also mentioned, as the constant, steady rhythm and the repetitive nature of the composition, and sensations such as pleasantness, sat-isfaction, annoyance, boredom and anxiety. These collected topics convey the incessant feeling and consumption needs which portray our present society, offering new paths for comprehending musical sound perception and consequent exploration.
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Proud, Jan. "P-129 The use of relaxation, guided imagery and visualisation techniques to help relieve anxiety and pain in palliative care". In Leading, Learning and Innovating, Hospice UK 2017 National Conference, 22–24 November 2017, Liverpool. British Medical Journal Publishing Group, 2017. http://dx.doi.org/10.1136/bmjspcare-2017-hospice.154.
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Talamo, Alessandra, Silvia Marocco, Fabio Presaghi, Valeria Vitale, Letizia Tripodi, Samantha Cedrone e Lorenzo Di Natale. "The Impact of Immersive Visualization on Engagement and Emotions Elicitation". In 8th International Visual Methods Conference, 136–50. AIJR Publisher, 2024. http://dx.doi.org/10.21467/proceedings.168.16.
Testo completoAbstract (sommario):
The power of environments to elicit emotions in humans has been widely studied in experimental psychology by using exposure to photographs or real situations. Also, many studies showed the ability of movies and imagery techniques to arouse emotions. To this aim, giant strides have been made with the development of Virtual Reality (VR), currently considered one of the most powerful tools to experimentally investigate the effect of environments on the emotions’ elicitation by human beings. This is attributed to its capacity to provide simulated experiences that induce a sense of being in the real world. Furthermore, the immersive feature of VR, promoting a sense of presence within virtual scenarios, coupled with emotions’ elicitation, has given rise to a clinical-therapeutic application of VR, especially in the treatment of anxiety disorders. This research study, conceived by HOPE (Humanitarian Operators Psychological E-services), aligns with the broader scope of the project to use VR as an effective medium for PTSD treatment of humanitarian operators, employing a specific protocol composed of virtual war and naturalistic scenarios. To this purpose, a sample of 42 participants was used to explore the general research objectives of this study that refer to the validation of four VR natural scenarios and nine VR war scenarios, assessing their impact in emotional states in terms of valence, arousal, control and engagement; as well as evaluating potential differences between natural and war scenarios in the emotional states’ ratings.
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Antoine Moinnereau, Marc, Tiago Henrique Falk e Alcyr Alves De Oliveira. "Measuring Human Influential Factors During VR Gaming at Home: Towards Optimized Per-User Gaming Experiences". In 13th International Conference on Applied Human Factors and Ergonomics (AHFE 2022). AHFE International, 2022. http://dx.doi.org/10.54941/ahfe1002056.
Testo completoAbstract (sommario):
It is known that human influential factors (HIFs, e.g., sense of presence/immersion; attention, stress, and engagement levels; fun factors) play a crucial role in the gamer’s perceived immersive media experience [1]. To this end, recent research has explored the use of affective brain-/body-computer interfaces to monitor such factors [2, 3]. Typically, studies have been conducted in laboratory settings and have relied on research-grade neurophysiological sensors. Transferring the obtained knowledge to everyday settings, however, is not straightforward, especially since it requires cumbersome and long preparation times (e.g., placing electroencephalography caps, gel, test impedances) which could be overwhelming for gamers. To overcome this limitation, we have recently developed an instrumented “plug-and-play” virtual reality head-mounted display (termed iHMD) [4] which directly embeds a number of dry ExG sensors (electroencephalography, EEG; electrocardiography, ECG; electromyography, EMG; and electrooculography, EoG) into the HMD. A portable bioamplifier is used to collect, stream, and/or store the biosignals in real-time. Moreover, a software suite has been developed to automatically measure signal quality [5], enhance the biosignals [6, 7, 8], infer breathing rate from the ECG [9], and extract relevant HIFs from the post-processed signals [3, 10, 11]. More recently, we have also developed companion software to allow for use and monitoring of the device at the gamer’s home with minimal experimental supervision, hence exploring its potential use truly “in the wild”. The iHMD, VR controllers, and a laptop, along with a copy of the Half-Life: Alyx videogame, were dropped off at the homes of 10 gamers who consented to participate in the study. All public health COVID-19 protocols were followed, including sanitizing the iHMD in a UV-C light chamber and with sanitizing wipes 48h prior to dropping the equipment off. Instructions on how to set up the equipment and the game, as well as a google form with a multi-part questionnaire [12] to be answered after the game were provided via videoconference. The researcher remained available remotely in case any participant questions arose, but otherwise, interventions were minimal. Participants were asked to play the game for around one hour and none of the participants reported cybersickness. This paper details the obtained results from this study and shows the potential of measuring HIFs from ExG signals collected “in the wild,” as well as their use in remote gaming experience monitoring. In particular, we will show the potential of measuring gamer engagement and sense of presence from the collected signals and their influence on overall experience. The next steps will be to use these signals and inferred HIFs to adjust the game in real-time, thus maximizing the experience for each individual gamer.References[1] Perkis, A., et al, 2020. QUALINET white paper on definitions of immersive media experience (IMEx). arXiv preprint arXiv:2007.07032.[2] Gupta, R., et al, 2016. Using affective BCIs to characterize human influential factors for speech QoE perception modelling. Human-centric Computing and Information Sciences, 6(1):1-19.[3] Clerico, A., et al, 2016, Biometrics and classifier fusion to predict the fun-factor in video gaming. In IEEE Conf Comp Intell and Games (pp. 1-8).[4] Cassani, R., et al 2020. Neural interface instrumented virtual reality headsets: Toward next-generation immersive applications. IEEE SMC Mag, 6(3):20-28.[5] Tobon, D. et al, 2014. MS-QI: A modulation spectrum-based ECG quality index for telehealth applications. IEEE TBE, 63(8):1613-1622.[6] Tobón, D. and Falk, T.H., 2016. Adaptive spectro-temporal filtering for electrocardiogram signal enhancement. IEEE JBHI, 22(2):421-428.[7] dos Santos, E., et al, 2020. Improved motor imagery BCI performance via adaptive modulation filtering and two-stage classification. Biomed Signal Proc Control, Vol. 57.[8] Rosanne, O., et al, 2021. Adaptive filtering for improved EEG-based mental workload assessment of ambulant users. Front. Neurosci, Vol.15.[9] Cassani, R., et al, 2018. Respiration rate estimation from noisy electrocardiograms based on modulation spectral analysis. CMBES Proc., Vol. 41.[10] Tiwari, A. and Falk, T.H., 2021. New Measures of Heart Rate Variability based on Subband Tachogram Complexity and Spectral Characteristics for Improved Stress and Anxiety Monitoring in Highly Ecological Settings. Front Signal Proc, Vol.7.[11] Moinnereau, M.A., 2020, Saccadic Eye Movement Classification Using ExG Sensors Embedded into a Virtual Reality Headset. In IEEE Conf SMC, pp. 3494-3498.[12] Tcha-Tokey, K., et al, 2016. Proposition and Validation of a Questionnaire to Measure the User Experience in Immersive Virtual Environments. Intl J Virtual Reality, 16:33-48.