Bibliographies thématiques / Microrecordings

Littérature scientifique sur le sujet « Microrecordings »

Auteur : Grafiati
Publié le 11 mars 2023

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Articles de revues sur le sujet "Microrecordings"

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Benazzouz, Abdelhamid, Sorin Breit, Adnan Koudsie, Pierre Pollak, Paul Krack et Alim-Louis Benabid. « Intraoperative microrecordings of the subthalamic nucleus in Parkinson's disease ». Movement Disorders 17, S3 (mars 2002) : S145—S149. http://dx.doi.org/10.1002/mds.10156.

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Mrakic-Sposta, Simona, Sara Marceglia, Marcello Egidi, Giorgio Carrabba, Paolo Rampini, Marco Locatelli, Guglielmo Foffani et al. « Extracellular spike microrecordings from the subthalamic area in Parkinson’s disease ». Journal of Clinical Neuroscience 15, no 5 (mai 2008) : 559–67. http://dx.doi.org/10.1016/j.jocn.2007.02.091.

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Cordella, Roberto, F. Carella, A. Franzini, C. Marras, F. Villani, G. Messina, G. Tringali et G. Broggi. « Intraoperative microrecordings in the posterior hypothalamus of anaesthetized humans with aggressive behaviour ». Neurological Sciences 31, no 2 (5 février 2010) : 183–88. http://dx.doi.org/10.1007/s10072-010-0217-5.

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Taha, Jamal M., Jacques Favre, Thomas K. Baumann et Kim J. Burchiel. « Tremor control after pallidotomy in patients with Parkinson's disease : correlation with microrecording findings ». Neurosurgical Focus 2, no 3 (mars 1997) : E4. http://dx.doi.org/10.3171/foc.1997.2.3.5.

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The goals of this study were to analyze the effect of pallidotomy on parkinsonian tremor and to ascertain whether an association exists between microrecording findings and tremor outcome. Forty-four patients with Parkinson's disease (PD) who had drug-induced dyskinesia, bradykinesia, rigidity, and tremor underwent posteroventral pallidotomy. Using a 1-μ-tip tungsten electrode, microrecordings were obtained through one to three tracts, starting 10 mm above the pallidal base. Tremor severity was measured on a patient-rated, 100-mm Visual Analog Scale (VAS), both preoperatively and 3 to 9 months (mean 6 months) postoperatively. Preoperatively, tremor was rated as 50 mm or greater in 24 patients (55%) and as less than 25 mm in 13 patients (30%). Postoperatively, tremor was rated as 50 mm or greater in five patients (11%) and less than 25 mm in 29 patients (66%). The difference was significant (p = 0.0001). Four patients (9%) had no postoperative tremor. Tremor improved by at least 50% in eight (80%) of 10 patients in whom tremor-synchronous cells were recorded (Group A) and in 12 (35%) of 34 patients in whom tremor-synchronous cells were not recorded (Group B). This difference was significant (p = 0.03). Tremor improved by at least 50 mm in all (100%) of the seven Group A patients with severe (>= 50 mm) preoperative tremor and in nine (53%) of 17 Group B patients with severe preoperative tremor. This difference was also significant (p = 0.05). The authors proffer two conclusions: 1) after pallidotomy, tremor improves by at least 50% in two-thirds of patients with PD who have severe (>= 50 mm on the VAS) preoperative tremor; and 2) better tremor control is obtained when tremor-synchronous cells are included in the lesion.
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Taha, Jamal M., Jacques Favre, Thomas K. Baumann et Kim J. Burchiel. « Tremor control after pallidotomy in patients with Parkinson's disease : correlation with microrecording findings ». Journal of Neurosurgery 86, no 4 (avril 1997) : 642–47. http://dx.doi.org/10.3171/jns.1997.86.4.0642.

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✓ The goals of this study were to analyze the effect of pallidotomy on parkinsonian tremor and to ascertain whether an association exists between microrecording findings and tremor outcome. Forty-four patients with Parkinson's disease who had drug-induced dyskinesia, bradykinesia, rigidity, and tremor underwent posteroventral pallidotomy. Using a 1-µ-tip tungsten electrode, microrecordings were obtained through one to three tracts, starting 10 mm above the pallidal base. Tremor severity was measured on a patient-rated, 100-mm Visual Analog Scale (VAS), both preoperatively and 3 to 9 months (mean 6 months) postoperatively. Preoperatively, tremor was rated as 50 mm or greater in 24 patients (55%) and as less than 25 mm in 13 patients (30%). Postoperatively, tremor was rated as 50 mm or greater in five patients (11%) and less than 25 mm in 29 patients (66%). The difference was significant (p = 0.0001). Four patients (9%) had no postoperative tremor. Tremor improved by at least 50% in eight (80%) of 10 patients in whom tremor-synchronous cells were recorded (Group A) and in 12 (35%) of 34 patients in whom tremor-synchronous cells were not recorded (Group B). This difference was significant (p = 0.03). Tremor improved by at least 50 mm in all (100%) of the seven Group A patients with severe (≥ 50 mm) preoperative tremor and in nine (53%) of 17 Group B patients with severe preoperative tremor. This difference was also significant (p = 0.05). The authors proffer two conclusions: 1) after pallidotomy, tremor improves by at least 50% in two-thirds of patients with Parkinson's disease who have severe (≥ 50 mm on the VAS) preoperative tremor; and 2) better tremor control is obtained when tremor-synchronous cells are included in the lesion.
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Hamel, W., U. Fietzek, A. Morsnowski, B. Schrader, D. Weinert, D. Müller, G. Deuschl et H. M. Mehdorn. « Subthalamic Nucleus Stimulation in Parkinson’s Disease : Correlation of Active Electrode Contacts with Intraoperative Microrecordings ». Stereotactic and Functional Neurosurgery 80, no 1-4 (2003) : 37–42. http://dx.doi.org/10.1159/000075158.

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Gao, D. M., L. Jeaugey, S. Lavallee, D. Hoffmann, P. Pollak et A. L. Benabid. « Micro- and Semi-Microrecordings in the Ventral Thalamus of Human Patients and Monkeys with Dyskinesias ». Stereotactic and Functional Neurosurgery 60, no 1-3 (1993) : 146. http://dx.doi.org/10.1159/000100601.

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Klempíř, Ondřej, et Radim Krupička. « Analysis of Neural Activity of the Human Basal Ganglia in Dystonia : a Review ». Lékař a technika - Clinician and Technology 49, no 2 (1 juillet 2019) : 66–71. http://dx.doi.org/10.14311/ctj.2019.2.05.

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Deep brain stimulation of the globus pallidus internus is an efective symptomatic treatment for pharmacoresistant dystonic syndromes, where pathophysiological mechanisms of action are not yet fully understood. The aim of this review article is to provide an overview of the state-of-the-art approaches for processing of microelectrode recordings in dystonia; in order to define biomarkers to identify patients who will benefit from the clinical deep brain stimulation. For this purpose, the essential elements of microelectrode processing are examined. Next, we investigate a real example of spike sorting processing in this field. Herein, we describe baseline elements of microrecordings processing including data collection, preprocessing phase, features computation, spike detection and sorting and finally, advanced spike train data analysis. This study will help readers acquire the necessary information about these elements and their associated techniques. Thus, this study is supposed to assist during identification and proposal of interesting clinical hypotheses in the field of single unit neuronal recordings in dystonia.
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Sieger, Tomáš, Tereza Serranová, Filip Růžička, Pavel Vostatek, Jiří Wild, Daniela Šťastná, Cecilia Bonnet et al. « Distinct populations of neurons respond to emotional valence and arousal in the human subthalamic nucleus ». Proceedings of the National Academy of Sciences 112, no 10 (23 février 2015) : 3116–21. http://dx.doi.org/10.1073/pnas.1410709112.

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Both animal studies and studies using deep brain stimulation in humans have demonstrated the involvement of the subthalamic nucleus (STN) in motivational and emotional processes; however, participation of this nucleus in processing human emotion has not been investigated directly at the single-neuron level. We analyzed the relationship between the neuronal firing from intraoperative microrecordings from the STN during affective picture presentation in patients with Parkinson’s disease (PD) and the affective ratings of emotional valence and arousal performed subsequently. We observed that 17% of neurons responded to emotional valence and arousal of visual stimuli according to individual ratings. The activity of some neurons was related to emotional valence, whereas different neurons responded to arousal. In addition, 14% of neurons responded to visual stimuli. Our results suggest the existence of neurons involved in processing or transmission of visual and emotional information in the human STN, and provide evidence of separate processing of the affective dimensions of valence and arousal at the level of single neurons as well.
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Klempíř, O., R. Krupička, T. Sieger et R. Jech. « P07-Automatic pallidal neurons recognition based on the detection of the number of clusters from microrecordings in dystonia ». Clinical Neurophysiology 129, no 4 (avril 2018) : e15-e16. http://dx.doi.org/10.1016/j.clinph.2018.01.052.

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Thèses sur le sujet "Microrecordings"

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Cordella, Roberto. « Microrecording within the posterior nucleus of the hypothalamus in pain and aggressive behaviours ». Doctoral thesis, Università degli studi di Trieste, 2008. http://hdl.handle.net/10077/2573.

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2006/2007
In the last decade there has been new interest in the posterior nucleus of the hypothalamus (PIH) as the target for the placement of deep brain stimulation to improve pain and psychiatric symptoms. This has brought the possibility to study single-unit acitvity from PIH. Very scanty information is available regarding the firing discharge of human’s PIH neurons. The aim of this study is to describe the firing discharge properties of PIH neurons in neurological and psychiatric disorders. Continuous physiological extracellular recordings were obtained in awake and sedated humans. Firing rate analysis, time domain and frequency domain analyses were used to characterize the firing pattern of PIH neurons. 19 PIH neurons from 7 patients were further studied (5 patients with Trigeminal Autonomic Cephalalgias, 1 aggressive behavior associated with epilepsy, and 1 aggressive behavior associated with head injury). During wakefulness PIH neurons displays tonic firing discharge at around 25Hz, while during sedation the firing rate is 12Hz and the firing pattern more variable. In aggressive behaviour and epilepsy the firing discharge is phasic and rhythmic with oscillations locked at around 7-8Hz. Regular and irregular tonic discharge is noticed in aggressive behaviour and head injury. Spontaneous activity in awake TACs patients is similar to what has been reported in animal models. Interestingly, in aggressive behaviour with epilepsy the observed pattern is bursting and rhythmic at around 7-8Hz. In the patient with head injury no specific pattern is found in PIH neurons. At this stage of knowledge these data are a novelty in the literature, thus it is not possibile to exclude that all these observations represent normal features of PIH neurons. However the differences noticed between pathologies may suggest that PIH neurons discharge rates and patterns are associated to the underlying neurological and psychiatric condition.
XX Ciclo
1972
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Livres sur le sujet "Microrecordings"

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Association for Information & Image Mana. Microrecording of Engineering Graphics - Computer-Output Microfilm : ANSI-Aiim Ms38-1995. Association for Information & Image Managemen, 1995.

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Chapitres de livres sur le sujet "Microrecordings"

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Steigerwald, Frank, et Jens Volkmann. « Intra-operative Microrecording and Stimulation ». Dans Deep Brain Stimulation in Neurological and Psychiatric Disorders, 111–34. Totowa, NJ : Humana Press, 2008. http://dx.doi.org/10.1007/978-1-59745-360-8_6.

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Ohye, Chihiro, Tohru Shibazaki et Yoshitaka Andou. « Pallidothalamic Relation in Parkinson’s Disease — Microrecording Study ». Dans Advances in Behavioral Biology, 611–16. Boston, MA : Springer US, 2002. http://dx.doi.org/10.1007/978-1-4615-0715-4_61.

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Ohye, Chihiro. « Selective Thalamotomy for Movement Disorders : Microrecording Stimulation Techniques and Results ». Dans Modern Stereotactic Neurosurgery, 315–31. Boston, MA : Springer US, 1988. http://dx.doi.org/10.1007/978-1-4613-1081-5_24.

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Hirato, Masafumi, Hideki Murata, Katsushige Watanabe, Akio Takahashi, Satoru Horikoshi, Takashi Shibasaki et Chihiro Ohye. « Dynamic Studies on the Possible Neural Pathway Mediating Parkinsonian Symptoms (Tremor, Rigidity and Did) Using Pet Scan and Microrecording ». Dans Advances in Behavioral Biology, 261–67. Boston, MA : Springer US, 1996. http://dx.doi.org/10.1007/978-1-4899-0194-1_30.

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Hirato, M., J. Ishihara, S. Horikoshi, T. Shibazaki et C. Ohye. « Parkinsonian Rigidity, Dopa-Induced Dyskinesia and Chorea — Dynamic Studies on the Basal Ganglia-Thalamocortical Motor Circuit Using PET Scan and Depth Microrecording ». Dans Advances in Stereotactic and Functional Neurosurgery 11, 5–8. Vienna : Springer Vienna, 1995. http://dx.doi.org/10.1007/978-3-7091-9419-5_2.

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Kucewicz, Michal T., B. Michael Berry et Gregory A. Worrell. « Simultaneous Macro- and Microrecordings ». Dans Invasive Studies of the Human Epileptic Brain, sous la direction de Samden D. Lhatoo, Philippe Kahane et Hans O. Lüders, 489–99. Oxford University Press, 2018. http://dx.doi.org/10.1093/med/9780198714668.003.0036.

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Invasive recordings from patients with epilepsy are increasingly employing new hybrid electrode technologies, which combine macro- and microelectrode electrophysiology, to explore the large scope of brain processes. These range from action potentials of single neurons to coordinated activity of neuronal ensembles to oscillations of widespread brain networks, all buried in oscillations of the extracellular local field potential sampled at various spatiotemporal scales. This chapter reviews various approaches to simultaneous micro- and macroscale electrophysiology, with current electrode designs and applications being discussed together with particular examples of epilepsy pathophysiology. The chapter highlights the advantages, limitations, and challenges for new technologies in the emerging era of human brain mapping projects. It is this technological advance that drives the progress of human intracranial electrophysiology and shifts attention to a vast scale of neuronal networks.
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« 6 Microrecording In The Primate MPTP Model ». Dans Microelectrode Recording in Movement Disorder Surgery, sous la direction de Zvi Israel et Kim J. Burchiel. Stuttgart : Georg Thieme Verlag, 2004. http://dx.doi.org/10.1055/b-0034-56096.

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Actes de conférences sur le sujet "Microrecordings"

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Raju, Venkateshwarla Rama, B. Roopam, K. Rukmini, Goutham R. Chakravarthy et Anuradha Boya. « Microrecording of writer's cramp signals with indigenously developed advanced real-time multi-channel intelligent-EMG-system ». Dans 2017 Intelligent Systems Conference (IntelliSys). IEEE, 2017. http://dx.doi.org/10.1109/intellisys.2017.8324216.

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