Relevant bibliographies by topics / Intraoperative brain mapping

Academic literature on the topic 'Intraoperative brain mapping'

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Published: 9 March 2023
Last updated: 10 March 2023

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Journal articles on the topic "Intraoperative brain mapping"

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Byrne, Richard W., Nader Sanai, Jose A. Landeiro, and Hugues Duffau. "Introduction: Advances in intraoperative brain mapping." Neurosurgical Focus 45, VideoSuppl2 (October 2018): Intro. http://dx.doi.org/10.3171/2018.10.focusvid.intro.

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Silbergeld, Daniel L. "Intraoperative transdural functional mapping." Journal of Neurosurgery 80, no. 4 (April 1994): 756–58. http://dx.doi.org/10.3171/jns.1994.80.4.0756.

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✓ During craniotomy for supratentorial intraparenchymal space-occupying lesions, with the patient either under general anesthesia or awake, a smaller durotomy designed to expose only the region of resection may be desirable because of brain swelling. Similarly, during repeat craniotomy or craniotomy following cerebral injury or infection, pial-dural adhesions increase the risk of damage to essential cortex, making a limited dural opening desirable. Intraoperative transdural somatosensory evoked potentials and transdural cortical stimulation mapping permit localization of functional cortex prior to durotomy. These techniques can be combined with intraoperative transdural ultrasonography to identify topographical landmarks and borders of mass lesions.
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Gasser, T., C. Nimsky, O. Ganslandt, E. Sandalcioglu, Y. Muragaki, N. Ozawa, H. Iseki, et al. "Intraoperative functional MRI: A novel technology for intraoperative brain-mapping." Journal of Biomechanics 39 (January 2006): S369. http://dx.doi.org/10.1016/s0021-9290(06)84481-7.

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Skrap, Miran, Dario Marin, Tamara Ius, Franco Fabbro, and Barbara Tomasino. "Brain mapping: a novel intraoperative neuropsychological approach." Journal of Neurosurgery 125, no. 4 (October 2016): 877–87. http://dx.doi.org/10.3171/2015.10.jns15740.

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OBJECTIVE Awake surgery and mapping are performed in patients with low-grade tumors infiltrating functional brain areas for which the greater the resection, the longer the patient survival. However, the extent of resection is subject to preservation of cognitive functions, and in the absence of proper feedback during mapping, the surgeon may be less prone to perform an extensive resection. The object of this study was to perform real-time continuous assessment of cognitive function during the resection of tumor tissue that could infiltrate eloquent tissue. METHODS The authors evaluated the use of new, complex real-time neuropsychological testing (RTNT) in a series of 92 patients. They reported normal scoring and decrements in patient performance as well as reversible intraoperative neuropsychological dysfunctions in tasks (for example, naming) associated with different cognitive abilities. RESULTS RTNT allowed one to obtain a more defined neuropsychological picture of the impact of surgery. The influence of this monitoring on surgical strategy was expressed as the mean extent of resection: 95% (range 73%–100%). At 1 week postsurgery, the neuropsychological scores were very similar to those detected with RTNT, revealing the validity of the RTNT technique as a predictive tool. At the follow-up, the majority of neuropsychological scores were still > 70%, indicating a decrease of < 30%. CONCLUSIONS RTNT enables continuous enriched intraoperative feedback, allowing the surgeon to increase the extent of resection. In sharp contrast to classic mapping techniques, RTNT allows testing of several cognitive functions for one brain area under surgery.
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Berger, Mitchel S., and George A. Ojemann. "Intraoperative Brain Mapping Techniques in Neuro-Oncology." Stereotactic and Functional Neurosurgery 58, no. 1-4 (1992): 153–61. http://dx.doi.org/10.1159/000098989.

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Gorbach, A. M., C. Kufta, J. Heiss, and E. Oldfield. "Intraoperative Functional Brain Mapping by Infrared Imaging." NeuroImage 7, no. 4 (May 1998): S63. http://dx.doi.org/10.1016/s1053-8119(18)30896-6.

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Duffau, Hugues. "Brain mapping in tumors: Intraoperative or extraoperative?" Epilepsia 54 (December 2013): 79–83. http://dx.doi.org/10.1111/epi.12449.

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Hameed, N. U. Farrukh, Zehao Zhao, Jie Zhang, Linghao Bu, Yuyao Zhou, Lei Jin, Hongmin Bai, et al. "A Novel Intraoperative Brain Mapping Integrated Task-Presentation Platform." Operative Neurosurgery 20, no. 5 (February 6, 2021): 477–83. http://dx.doi.org/10.1093/ons/opaa476.

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Abstract BACKGROUND To be efficient, intraoperative task-presentation systems must accurately present various language and cognitive tasks to patients undergoing awake surgery, and record behavioral data without compromising convenience of surgery. OBJECTIVE To present an integrated brain mapping task-presentation system we developed and evaluate its effectiveness in intraoperative task presentation. METHODS The Brain Mapping Interactive Stimulation System (Brain MISS) is a flexible task presentation system that adjusts for patient comfort, needs of the surgeon, and operating team, with multivideo recording for patients’ behavior. A total of 48 patients from 3 centers underwent intraoperative language task test during awake brain surgery with the Brain MISS. Each patient was assigned 5 questions each on picture naming, reading, and listening comprehension before and during awake surgeries. The accuracy of intraoperative stimulus-response (without electrical stimulation) was recorded. The Brain MISS was to be considered effective, if the lower limit of 95% CI of patients’ intraoperative response was ≥80% and also if the accuracy of intraoperative response of all patients was statistically higher than 80%. RESULTS All patients successfully underwent intraoperative assessment with the Brain MISS. The overall accuracy of stimulus response was 95.8% (95% CI 90.18%-100.00%), with the lower limit being higher than 80% and the response accuracy also significantly being higher than 80% in all patients (P = .006). CONCLUSION The Brain MISS is a portable and effective system for presenting and streamlining complicated language and cognitive tasks during awake surgery. It can also record standardized patient response data for neuroscientific research.
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Kin, Taichi, Masanori Yoshino, Toki Saito, Daichi Nakagawa, Masaaki Shojima, Akitake Mukasa, Masahiro Shin, et al. "Pre- and Intraoperative Brain Functional Mapping in Brain Tumor Surgery." Japanese Journal of Neurosurgery 23, no. 1 (2014): 5–11. http://dx.doi.org/10.7887/jcns.23.5.

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Miyagishima, T., A. Takahashi, S. Ishiuchi, M. Hirato, and N. Saito. "Preoperative brain mapping and intraoperative monitoring in brain tumor surgery." International Congress Series 1278 (March 2005): 113–16. http://dx.doi.org/10.1016/j.ics.2004.11.149.

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Dissertations / Theses on the topic "Intraoperative brain mapping"

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Ferpozzi, V. "THE NEURAL NETWORK UNDERLYING SPEECH IN HUMANS: INTRAOPERATIVE INVESTIGATION OF MOTOR CONTROL OF SPEECH IN BROCA, VENTRAL PRE-MOTOR AND PRIMARY MOTOR CORTICES." Doctoral thesis, Università degli Studi di Milano, 2017. http://hdl.handle.net/2434/488181.

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The language, as form of verbal communication –and of thought-, is a unique human ability. It is complex form of communication, consisting of different levels of representation (phonological, syntactic and semantic), translated into words by a sensory-motor system controlling the phono-articulatory apparatus. The loss of language ability, as a result of injury, is an intolerable disability with, at present, very little chance of functional recovery. In order to design efficient rehabilitation actions, the knowledge of the functional organization of neural circuits that underlie language is mandatory. The aim of PhD project was to investigate the functional properties of the cortical areas involved in sensory-motor control of speech by acting on the phono-articulatory apparatus. The phono-articulatory apparatus is innervated by the motor nuclei of the cranial nerves receiving, with few exceptions, bilateral input from the Primary Motor cortex (M1). At present, however, it remains unclear which other cortical areas in the frontal lobe are actually involved in shaping the motor program to be executed by M1 to allow verbal production and which is their precise functional role in sensory-motor control of the phono-articulatory gestures. Main focus of the project were the three frontal area classically considered involved in motor control of speech: Broca's area, vPM and M1. A putative direct role of Broca’s area in motor control of speech must be exerted either in shaping the activity of M1 or through its independent control of bulbar motoneurons. In both cases, Broca’s area is expected to significantly affect, either directly or indirectly via M1, the motoneuronal excitability and, in turn, the activity of phono-articulatory muscles. However, the observation that injuries of sole Broca’s area do not result in a motor deficit of speech, but rather in improving mutism (see Introduction), raised doubts on its significant role in control of speech motor output. Interestingly, the “apraxia of speech”, a clear phono-articulatory dysfunction (see Introduction), follows to lesions of the ventral Pre-Motor cortex (vPM), suggesting to be involved in motor programming of speech. However, all these issues remained unresolved for many years, due to the lack of appropriate experimental tools to study these areas in humans, in ecological conditions. In the last two decades, the introduction of the intraoperative brain mapping technique allowed a direct investigation of the functional properties of M1, vPM and Broca’s area, adding new elements to the debate regarding the role of these areas in speech. However, the absence of a careful analysis of phono-articulatory activity during the brain mapping, highlights confounding evidence regarding the actual role of three areas in motor control of speech. This study was performed by analysing data collected intraoperatively in 70 patients during surgical removal of gliomas performed with the aid of the brain mapping technique by a high skilled neurosurgical team. The instrumental setup and the methodology used to perform the brain mapping technique gives the unique opportunity to investigate human circuits underlying language with a direct approach (see Introduction). During resection of gliomas located within or in proximity to the cortical areas and tracts involved in language neural network (at level of frontal, temporal or insula lobes), Broca’s area, vPM and M1 are exposed and electrically stimulated as essential part of the clinical procedure. During the intraoperative phase, the patient is awakened and asked to perform different types of language tests assisted and evaluated online by neuropsychologists. During the language tests (object picture naming and counting tests), the Direct Electrical Stimulation (DES) is applied on the exposed areas (M1, vPM and Broca’s area), in order to identify the eloquent cortical sites, i.e. the sites where DES actually “interferes” with the language function inducing a deficit in performance. To perform a reliable mapping procedure, at the beginning of surgery the precise site onto the three areas expected to control the phono-articulatory apparatus and therefore to be likely involved in speech must be identified. It is indeed known in literature that both M1 and vPM host the representation of both oro-facial and hand-arm muscles (M1 controls also foot-leg muscles). Thus, during procedure first it is mandatory to identify, during each area the hand-arm and the oro-facial, the latter to be then exposed to stimulation during speech tasks. Once the oro-facial representation in the areas was disclosed, DES was applied on the areas during language tasks and the performance was compared with the performance of the same task without DES (natural performance). During all the surgical procedure, the electrical activity (EMG) of some of the muscles involved in the phono-articulation has been recorded. The EMG signal was analysed offline with a quantitative approach allowing to investigate the pattern of motor units voluntarily recruited during the language tasks performed by the patient in absence of stimulation (natural performance) to be then compared to the pattern of recruitment recorded when DES was applied on the three different cortical areas in the same conditions. This analysis was designed to disclose the specific pattern of specific alteration in motor unit recruitment in phono-articulatory muscles due to the DES-induced “transient inactivation” of the three areas. These data, interpreted in light of the animal studies and human studies, were used to infer the putative specific role of M1, vPM and Broca’s area in motor control of phono-articulatory muscles in the attempt to shed light on the cortical network underlying the executive branch of language network.
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VIGANO', LUCA. "DIRECT ELECTRICAL STIMULATION OF PRIMARY MOTOR AND FRONTAL PREMOTOR REGIONS: MAPPING AND PRESERVING NETWORKS FOR HAND MOTOR CONTROL DURING BRAIN TUMOUR RESECTION." Doctoral thesis, Università degli Studi di Milano, 2020. http://hdl.handle.net/2434/707523.

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This PhD project was funded by EDEN2020 (Enhanced Delivery Ecosystem for Neurosurgery in 2020). Brain disease represent a cost about 800 billion euros per year in Europe and outcome of treatment is demonstrated to critically depend on the knowledge of functional anatomy and its preservation. By combining pre-operative MRI and diffusion-MRI imaging, intra-operative ultrasounds, robotic assisted catheter steering, brain diffusion modelling and a robotics assisted neurosurgical robot (the Neuromate), EDEN2020 aims at realizing an integrated technology platform for minimally invasive neurosurgery which will provide a significative step change in treatment of brain disease. To date, neurosurgical instruments for diagnostic and therapy (drugs infusion) are inserted via rigid cannulas. This represents a primary technological limitation of treatment with direct consequences in patient’s post-operative outcome, since the insertion of rigid cannulas cannot be planned along procedure-optimised trajectories which take into account tissue microstructures and respect the bundles’ topographical anatomo-functional organisation. To bridge this gap, main aim of EDEN2020 is to engineer a steerable catheter for chronic neuro-oncological disease than can be robotically guided and kept in situ for extended period, which insertion can be tailored on clinical conditions and individual anatomy. The correct trajectory and final positioning of a catheter must be planned and guided through the brain structures by the knowledge of the anatomo-functional organization of the neural circuits subserving the essential motor and cognitive functions to avoid lesions resulting in permanent deficits impacting on the quality of life of patients. In addition, since the diffusivity is enhanced when it follows the white matter pathways belongings to the network in which an individual tumour has grown, as showed by data generated by EDEN consortium, these circuits became the target of the drug. In EDEN animal trials (ovine model), the circuit targeted for delivery was the corticospinal tract, due to the anatomical restriction imposed by the sheep brain. In humans, this descending system, which is essential for everyday life activities allowing the skilled use of the hand (i.e. the ability to manipulate objects and tools), has a much higher level of complexity and its functional organisation has not yet been described in detail as in other animal models. The complexity of the neural organization underlying motor control of hand gestures in humans results in a dramatic degree of freedom, but at the same time in a poor ability to recover after lesions. When this connectivity is infiltrated by a tumour and thus became the possible target of drug delivery devices (EDEN), its complexity must be taken into consideration to avoid the onset of deficits. The great majority of brain tumours occurs in the frontal lobe and, particularly Low Grade Gliomas (LGGs), develop close or within the cortical but mostly subcortical structures involved in motor control. Therefore, to track safely the entrance and the trajectory of catheters, a reference atlas of the neural circuitry controlling hand movement is mandatory to identify which cortical and subcortical areas must not be lesioned to avoid permanent inability. Based on this premises, this PhD project investigated, with a multidisciplinary approach, the frontal networks subserving hand function to provide a frame for understanding the connectivity involved in hand skilled movements, which became a possible target for drug delivery in tumours developing in primary motor and/or pre-motor regions. The skilled use of the hand is allowed by the high level of human sensorimotor control implemented by the corticospinal system, particularly developed in primates, connecting distant and functionally different areas via subcortical bundles and finally acting on the spinal cord with a huge bundle of descending fibres. This complex network computes the sensory information related to the goal of the action to shape the appropriate motor command for motoneurons, the final common path to muscles. Non-human primate studies have demonstrated that the main motor output of the corticospinal tract is the primary motor cortex (M1), which act on the spinal motoneurons, in producing voluntary hand and finger movements. The monkey M1 has recently been demonstrated to represent an anatomo-functional non-unitary sector, subdivided in a caudal region dense with cortico-motoneuronal cells and a rostral sector with few monosynaptic connections to alpha-motoneurons and/or with slower projections to the spinal cord. To control and execute skilled hand movements, M1 is highly interconnected with other frontal and parietal cortical pre-motor regions, with subcortical structures such as the basal ganglia and with the cerebellum. A precise description of the human circuitry allowing for realization of dextrous hand movement is still missing in the human, as the electrophysiological and anatomical experimental approaches developed in animal models cannot be performed (i.e. intracortical microstimulation, neuronal tracing, lesion studies etc.). The unique setting of brain tumour resection with the brain mapping technique gives a great opportunity to use clinical data to evaluate neural networks in humans. In this setting, during surgical resection, Direct Electrical Stimulation (DES) is applied onto the exposed cortical and subcortical areas in order to identify the eloquent sites, i.e. where DES elicits motor responses, thus individuating the structures directly acting on the motor descending pathways, or induces transient impairment of the execution of a task, due to its interference with the physiological activity of the stimulated area. This approach allows for the extension of the resection of the tumour beyond its boundaries, increasing the patients’ survival while preserving their functional integrity. As has emerged by recent publications of our group, among the different stimulation paradigms available for intraoperative monitoring, the high frequency stimulation (‘the pulse technique’), which elicits motor evoked potentials (MEPs), is the most reliable paradigm for mapping the descending fibres originating form primary and non-primary motor areas, also in lesions infiltrating M1, while long and short-range fronto-parietal premotor pathways are well identified when low frequency stimulation (‘the Penfield technique’) is applied while the patient is performing a dedicated object manipulation task, clearly interfering with its performance. With a multidisciplinary approach, by combining electrophysiological data with virtual anatomical dissections by means of high angular resolution diffusion imaging (HARDI) tractography we correlated the functional properties of the stimulated sites with specific anatomical structures. In this PhD project, we focused on: the anatomo-functional properties of the human hand representation in M1 (study 1); the oncological and functional efficiency of high-frequency mapping in tumours harbouring within M1 (study 2); the frontal premotor pathways involved in controlling fine hand movements (study 3). Study 1, conducted on 17 patients who underwent an awake procedure, reported a possible subdivision, based on anatomo-functional analysis, of the human hand-knob in two sectors (a posterior one, close to the central sulcus, and an anterior one, close to the precentral sulcus) with different cortical excitability, different hand-muscle electromyographic (EMG) pattern when stimulations were delivered during the object manipulation task and, finally, with different local cortico-cortical connectivity. Overall data suggests that the two sectors may exert different roles in motor control. Study 2 consisted of a retrospective analysis of 102 patients who underwent an asleep procedure for the removal of tumours harbouring with M1 and its descending fibres. The neurophysiological protocols adopted for the intraoperative brain mapping were correlated with the clinical condition, the tumour imaging features, the extent of the resection and the post-operative functional outcome. First, results indicated that M1 tumour removal is feasible and safe and the high frequency stimulation was revealed as the most efficient and versatile paradigm in guiding resection of M1, affording 85.3% complete resection and only 2% permanent morbidity. The study confirmed the possible subdivision of M1 in a rostral less excitable region and a caudal more excitable region reported in Study1 with its clinical impact: the rostral sector can be indeed considered a safe point of entry for surgery and thus for catheters. Study 3 aimed at characterizing the effect of DES on the electrical activity (EMG) of hand movers during a dedicated object-manipulation task during subcortical stimulation of the frontal white matter anterior to M1 (precentral gyrus) and the anatomical evaluation of the stimulated sites by means of diffusion tractography, in 36 patients who underwent an awake surgery. Results indicated that stimulations of dorsal premotor connections with the spinal cord, dorsal striatum, local U-shaped connections and the superior longitudinal fasciculus I and II resulted in abrupt arrest of the hand, while more ventral stimulation, mainly targeting the third branch of the superior longitudinal fasciculus (SLF III) resulted in clumsy hand movements. Resection cavities analysis showed that transient post-operative upper-limb motor deficit occurred only disconnecting the supplementary motor area corticofugal fibres and the frontal U-shaped connections. Overall data suggests that DES on dorsal premotor white matter could interfere with areas involved in the very final stages of the motor program, while DES on ventral premotor white matter could halt the sensorimotor transformations necessary for correct hand shaping.
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Herbet, Guillaume. "Vers un modèle à double voie dynamique et hodotopique de l'organisation anatomo-fonctionnelle de la mentalisation : étude par cartographie cérébrale multimodale chez les patients porteurs d'un gliome diffus de bas-grade." Thesis, Montpellier 1, 2014. http://www.theses.fr/2014MON1T004/document.

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Comprendre comment le cerveau humain engendre les formes les plus élaborées de comportements est profondément lié à nos connaissances générales sur son organisation anatomique et fonctionnelle. Jusqu'à récemment encore, on pensait que les fonctions cognitives n'étaient rien d'autre que le sous-produit de l'activité neurale de régions corticales discrètes et hyper-fonctionnalisées. Les découvertes majeures obtenues ces dix dernières années dans le champ de la neuro-imagerie, et plus particulièrement de la connectomique, invitent cependant à complexifier nos représentations sur les liens qu'entretiennent structures et fonctions cérébrales. Le cerveau semble en effet être organisé en systèmes neurocognitifs complexes, hautement distribués et plastiques. C'est dans cet esprit qu'a été réalisé ce travail de thèse dont l'ambition première a été de repenser les modèles actuels de la cognition sociale, et en particulier ceux ayant trait à la fonction de mentalisation, à travers l'étude comportementale des patients porteurs d'un gliome diffus de bas-grade. Cette tumeur neurologique rare constitue un excellent modèle physiopathologique en vue du démasquage des structures maîtresses des systèmes cognitifs complexes, en ce qu'elle induit des phénomènes majeurs de réorganisation fonctionnelle, et s'infiltre préférentiellement le long de la connectivité axonale associative. Des corrélations anatomo-cliniques ont été réalisées suivant une approche topologique classique (analyse de groupe en régions d'intérêt, cartographie voxel-based lesion-symptom, stimulation électrique corticale intra-opératoire) mais également hodologique (degré de déconnection des faisceaux d'association, stimulation électrique de la connectivité axonale). Les résultats principaux de nos différents travaux nous permettent de jeter les premières bases d'un modèle à double voie dynamique (plastique) et hodotopique (contraint par la réalité anatomique) de l'organisation anatomo-fonctionnelle des processus de mentalisation. Spécifiquement, une voie dorsale, interconnectant le aires corticales fronto-pariétales « miroirs » via le système périsylvien de substance blanche associative (faisceau arqué et faisceau longitudinal supérieur latéral), sous-tendrait les processus perceptifs de « bas-niveau » nécessaires à l'identification préréflexive des états mentaux ; une voie cingulo-médiane, interconnectant les régions préfrontales médiales et rostro-cingulaires aux régions pariétales postérieures médiales via le faisceau cingulaire, sous-tendrait les processus de «haut-niveau » nécessaires aux inférences mentalistiques conscientes. Ces découvertes constituent une avancée substantielle en neurosciences sociales, ont des implications importantes pour la prise en charge clinique des patients, et peuvent permettre de mieux comprendre certaines psychopathologies caractérisées à la fois par un trouble de la mentalisation et des anomalies structurales de la connectivité associative (troubles du spectre autistique)
Understanding how the brain produces sophisticated behaviours strongly depends of our knowledge on its anatomical and functional organization. Until recently, it was believed that high-level cognition was merely the by-product of the neural activity of discrete and highly specialized cortical areas. Major findings obtained in the past decade from neuroimaging, particularly from the field of connectomics, prompt now researchers to revise drastically their conceptions about the links between brain structures and functions. The brain seems indeed organized in complex, highly distributed and plastic neurocognitive networks. This is in this state of mind that our work has been carried out. Its foremost ambition was to rethink actuals models of social cognition, especially mentalizing, through the behavioural study of patients harbouring a diffuse low-grade glioma. Because this rare neurological tumour induces major functional reorganization phenomena and migrates preferentially along axonal associative connectivity, it constitutes an excellent pathophysiological model for unmasking the core structures subserving complex cognitive systems. Anatomo-clinical correlations were conducted according to both a classical topological approach (region of interest analyses, voxel-based lesion-symptom mapping, intraoperative cortical electrostimulation) and a hodological approach (degree of disconnection of associative white matter fasciculi, intraoperative axonal connectivity mapping). The main results of our different studies enable us to lay the foundation of a dynamic (plastic) and hodotopical (connectivity) dual-stream model of mentalizing. Specifically, a dorsal stream, interconnecting mirror frontoparietal areas via the perisylvian network (arcuate fasciculus and lateral superior longitudinal fasciculus), may subserve low-level perceptual processes required in rapid and pre-reflective identification of mental states; a cingulo-medial stream, interconnecting medial prefrontal and rostro-cingulated areas with medial posterior parietal areas via the cingulum, may subserve higher-level processes required in reflective mentalistic inferences. These original findings represents a great step in social neuroscience, have major implications in clinical practice, and opens new opportunities in understanding certain pathological conditions characterized by both mentalizing deficits and aberrant structural connectivity (e.g. autism spectrum disorders)
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Vincent, Marion. "Measuring the effects of direct electrical stimulation during awake surgery of low grade glioma." Thesis, Montpellier, 2017. http://www.theses.fr/2017MONTS054.

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La "chirurgie éveillée du cerveau" consiste à retirer des tumeurs cérébrales infiltrantes (gliomes de bas grade, GIBG) à progression lente chez un patient éveillé. Une cartographie anatomo-fonctionnelle du cerveau est réalisée par stimulation électrique directe (SED) des zones proches de la tumeur afin de discriminer les aires cérébrales fonctionnelles de celles qui ne le sont plus. Les effets inhibiteurs de la stimulation sont mis en évidence par les tests neuropsychologiques réalisés par le patient lors de la chirurgie. Cependant, la SED est paramétrée de manière totalement empirique bien qu’utilisée de façon standardisée. De plus, si ses effets comportementaux sont mis en avant, ses effets électrophysiologiques restent plus méconnus. La conservation de la relation entre électrophysiologie (potentiel évoqué, PE) et comportement (fonction) est cruciale lors de chirurgies des GIBG : l’analyse des PE en temps réel permettrait une identification de ces relations au cours même de la chirurgie.Pour cela, nous avons réalisé des enregistrements peropératoires de l’activité électro-corticographique (ECoG) du cortex (CPP, n° ID-RCB : 2015-A00056-43). L’étude de ces enregistrements a permis de mesurer les effets electrophysiologiques de la SED corticale et sous-corticale, en évaluant la réponse du cerveau à la stimulation au travers des PE. Une chaine d'acquisition spécifique à la mesure de l'ECoG a été développée afin de pouvoir à terme mesurer et visualiser les PE en temps réel. De plus, un algorithme de post-traitement a été implémenté afin de réduire la contamination du signal par l’artefact de stimulation.Mieux comprendre les mécanismes sous-jacents à la SED, notamment au travers de la mesure des réponses électrophysiologiques, doit permettre de proposer des protocoles peropératoires plus objectifs afin d'améliorer la planification chirurgicale et la qualité de vie des patients
The ‘Awake brain surgery’ consists in removing some slow-growing infiltrative brain tumor (low grade glioma, LGG) in a patient, to delay its development while preserving the functions. An anatomo-functional mapping of the brain is performed by electrically stimulating brain areas near the tumor to discriminate functional versus nonfunctional areas. The inhibitory effects of this direct electrical stimulation (DES) are evidenced by the neuropsychological tests undergone by the patient during the tumor resection. However, the DES parameters are empirically set even though its use is standardised. Moreover, even if its behavioural effects are well known, its electrophysiological effects have been partially depicted.Preserving the relationship between electrophysiology (evoked potential, EP) and behaviour (function) is crucial in LGG surgery.Intra-operative electrocorticographic recordings (ECoG) of the brain activity were thus performed (CPP, n° ID-RCB : 2015-A00056-43). The electrophysiological effects of cortical and subcortical DES on brain activity have been highlighted, by assessing the response of the brain to the stimulation through EP recordings analysis. A new acquisition set-up has also been specifically developed for ECoG recordings in order to measure and eventually visualise the EP in real-time. Furthermore, a post-processing algorithm has been implemented to reduce the signal disturbances induced by the stimulation artefact.A better understanding of the underlying DES mechanisms, in particular through the measurement of electrophysiological responses, should enable designing more perfected protocols in order to improve the surgical planning, and quality of life of the patients
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Vassal, François. "Le Connectome du Langage dans le cerveau humain : étude structurelle et foncionnelle en tractographie par Imagerie tensorielle de diffusion, IRM fonctionnelle et stimulation électrique peropératoire." Thesis, Clermont-Ferrand 1, 2016. http://www.theses.fr/2016CLF1MM12.

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Si les régions cérébrales du langage ont étélargement explorées grâce à l’IRM fonctionnelle (IRMf) et la stimulation électrique directe (SED)peropératoire, leur connectivité reste encore incomplètement documentée. Il n’est pas seulement débattuquels faisceaux de SB contribuent au langage, mais également quelle est leur anatomie précise et leur rôlefonctionnel spécifique. Une meilleure compréhension du connectome du langage est requise pourdiminuer la morbidité postopératoire en neurochirurgie et développer de nouveaux traitements cibléspour la rééducation des aphasies. Notre objectif était de cartographier structurellement etfonctionnellement, in vivo, la connectivité du langage. Dans une première étude préclinique portant sur 2Oadultes sains, nous avons combiné des informations structurelles axonales révélées par la tractographieavec des informations fonctionnelles corticales dérivées de l’IRMf (tâche de lecture compréhensive). Huitfaisceaux de SB ont été explorés —i.e. faisceau arqué, faisceau longitudinal supérieur, faisceau frontooccipitalinférieur, faisceau unciné, faisceau longitudinal inférieur, faisceau longitudinal moyen, faisceauoperculo-prémoteur, faisceau frontal transverse—, dont le rôle fonctionnel a été analysé en recherchantune connexion entre leurs terminaisons corticales et les activations IRMf. Les caractéristiquesanatomiques des faisceaux (i.e. volume, longueur, terminaisons corticales), leurs asymétries interhémisphériqueset leurs variations interindividuelles ont été colligées. Ce protocole a permis deconstruire le connectome du langage et d’étudier en détails son organisation structurelle macroscopique.Dans une seconde partie, ces données ont été transposées à la clinique pour le traitement chirurgical depatients souffrant de tumeurs cérébrales (gliomes) en régions du langage. Pendant la résection tumorale,des images de tractographie intégrées à un système de neuronavigation ont été systématiquementcombinées à la SED au cours d’un test de dénomination orale d’images. Ce protocole opératoire a permisd’optimiser les résultats chirurgicaux en termes de qualité d’exérèse et de préservation du langage, et aconstitué une opportunité unique d’étudier en temps réel les corrélations structure – fonction. Encouplant la localisation anatomique précise où chaque SED a été délivrée —obtenue grâce aux images detractographie naviguées— et la sémiologie des paraphasies induites par la SED —colligée par unorthophoniste présent au bloc opératoire—, nous avons déterminé le rôle spécifique de 5 faisceaux tantcortico-corticaux (faisceau arqué, faisceau fronto-occipital inférieur, faisceau frontal transverse) quecortico-sous-corticaux (fibres prémotrices orofaciales, faisceau fronto-striatal) dans différentes souscomposantesdu langage, i.e. traitement phonologique, traitement sémantique, contrôle moteur,planification articulatoire, contrôle exécutif/cognitif de la réponse verbale. Considérés de façon globale,nos résultats permettent d’envisager une meilleure compréhension de l’organisation anatomofonctionnelledes réseaux cérébraux du langage. Au-delà de l’intérêt scientifique, la possibilité deconstruire le connectome du langage spécifique à chaque individu ouvre la voie vers d’importantesapplications en neurochirurgie, dans une perspective de médecine personnalisée. Aujourd’hui, la chirurgiedes tumeurs cérébrales guidée par l’image. Demain, le développement de nouveaux traitements pour larééducation des aphasies, e.g. la déposition ciblée d’agents pharmacologiques, de cellules souches ou deneuromodulations, interagissant directement avec la connectivité résiduelle épargnée par la lésion
The langage connectome is defined as the neuronal networks that subserve languagefunctions. Anatomically, it comprises specialized cortical areas and modulatory subcortical areas (i.e. deepgray nuclei and cerebellum), as well as their interconnections trough white matter (WM) fascicles.Although brain regions involved in language have been largely explored thanks to functional MRI (fMRI)and intraoprative electrical stimulation (IES), the underlying WM connectivity is still not mastered. It isnot only unknown which WM fascicles specifically contribute to language, but there is also much debateabout their precise anatomy and the functions they subserve during language processing. Betterunderstanding of the structural and functional organization of the language connectome is requisite toreduce postoperative morbidity in neurosurgery and develop targeted treatments for aphasiarehabilitation. Herein, our objective was to map structurally and functionally, in vivo, the subcorticalconnectivity of language. First, we conducted a preclinical study in 20 healthy subjects, combining DTItractography and fMRI (reading comprehension task) to yield connectivity associated with language. Weexplored 8 WM fascicles that have been proposed as putative candidates for language —i.e. arcuatefascicle, superior longitudinal fascicle, inferior fronto-occipital fascicle, uncinate fascicle, inferiorlongitudinal fascicle, middle longitudinal fascicle, operculopremotor fascicle, frontal aslant tract—, towhich we assigned functionality by tracking their connections to the fMRI-derived clusters. We generateda normative database of anatomical characteristics for each WM fascicle, such as volume, length, corticalterminations and their interhemispheric and interindividual variations. By using this construct, weprovided in explicit details the structural map of the language connectome. Second, this body ofknowledge was transposed to brain tumor surgery. Patients suffering of gliomas located close to languageregions were operated on under local anesthesia (i.e. awake surgery) in order to perform intraoperativelanguage mapping (object naming task). Essential language sites were localized through IES andanatomically characterized thanks to navigated tractography images. This intraoperative protocol allowedmaximum tumor resection while preserving language functions. Furthermore, it gave us a uniqueopportunity to perform reliable, real-time structure – function relationships, determining the role of 5WM fascicles (arcuate fascicle, inferior fronto-occipital fascicle, frontal aslant tract, orofacial premotorfibers, frontostriatal fascicle) in different subcomponents of language, i.e. phonological processing,semantic processing, articulatory planning, motor control and executive/cognitive control of verbalresponse. Globally considered, our results allow a better understanding of the anatomo-functionalorganization of the language network in the human brain. Beyond the scientific interest, the possibility toconstruct the individual (patient-specific) connectome paves the way for major applications inneurosurgery, in the perspective of personalized medicine. Today, the maximum safe resection of braintumors located in eloquent language areas, guided by navigated, multimodal images. Tomorrow, thedevelopment of new treatments for rehabilitation of post-stroke aphasia patients, such as the targeteddelivery of drugs, stem cells, or neuromodulation devices, fitting with the residual functional connectivityspared by the lesion
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Hartmann, Steven L. "Intraoperative identification and display of cortical brain function." Diss., 2002. http://etd.library.vanderbilt.edu/ETD-db/theses/available/etd-0321102-085124/.

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Cardoso, Mafalda Inês Martins. "The Portuguese version of the Dutch Linguistic Intraoperative Protocol: semantic tasks." Master's thesis, 2019. http://hdl.handle.net/10773/29738.

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Background: The Dutch Linguistic Intraoperative Protocol (DuLIP) is a battery of tests that allows the language evaluation in pre, intra and postoperative of patients with low grade gliomas. The patient is awake during surgery which allows brain mapping using direct electrical stimulation. The Portuguese version of DuLIP (DuLIP-EP) includes phonology, syntax, semantics, naming and articulation tasks. This Dissertation focuses on the eight semantics tasks. Aim: Translate and adapt DuLIP semantic tasks to European Portuguese. Methods: A qualitative and quantitative study was performed to translate and adapt DuLIP, which was then used to assess a group of normal participants in order to obtain normative data. The instructions of the original authors were followed. For each semantic task characteristics such as frequency, age of acquisition, imaginability, prevalence, length and semantic category of the word were considered. The DuLIP was administered to 144 healthy adult participants who met the inclusion criteria. Results: Some of the items in the semantic tasks were eliminated as they did not reach 90% of right answers given by participants. The total 82 women and 62 men, aged between 18 and 89 years and with 4 to 24 years of education, participated in the study. It was observed that women obtained better results, with no statistically significant differences between men and women (p ≤ 0.0024). The younger the better the results, and there were statistically significant differences in 5 semantic tests. Regarding education, the higher the number of years of education the better the scores, with significant differences in 5 tasks (p ≤ 0.0024). A moderate correlation (r = 0.410) was observed between cognitive ability and the results of the intrusive word task. Conclusion: The DuLIP-EP semantic tasks were translated and adapted, resulting in a battery of tests that is essential for language evaluation in the context of neurosurgery, increasing the patient's lifetime, quality of life and decreasing the postoperative sequalae.
Enquadramento: O Dutch Linguistic Intraoperative Protocol (DuLIP) é uma bateria de testes que permite avaliar a linguagem no pré, intra e pós-operatório de pacientes com gliomas de baixo grau. O paciente está acordado durante a cirurgia o que permite o mapeamento cerebral usando a estimulação elétrica direta. A versão portuguesa do DuLIP (DuLIP-PE) contempla tarefas de fonologia, sintaxe, semântica, nomeação e articulação. Esta Dissertação foca-se na área da semântica e nas suas oito tarefas. Objetivos: Traduzir e adaptar as tarefas de semântica do DuLIP para o Português Europeu. Métodos: Foi realizado um estudo qualitativo e quantitativo, de forma a traduzir e adaptar o DuLIP e este foi aplicado à população normal, de forma a obter dados normativos. Foram seguidas as indicações dos autores originais. Para cada tarefa de semântica, características como a frequência, idade de aquisição, imaginabilidade, prevalência, comprimento e categoria semântica da palavra foram tidas em conta. O Protocolo foi administrado a 144 participantes adultos e saudáveis, que satisfazessem os critérios de inclusão. Resultados: Em algumas tarefas de semântica foram eliminados itens que não atingiram 90% de respostas certas dadas pelos participantes. Participaram no estudo 82 mulheres e 62 homens, com idades compreendidas entre os 18 e os 89 anos e com 4 a 24 anos de escolaridade. Foi possível observar que as mulheres obtiveram melhores resultados, não existindo diferenças estatisticamente significativas entre homens e mulheres (p ≤ 0.0024). Quanto menor a idade, melhores os resultados, existindo diferenças estatisticamente significativas em 5 provas de semântica. Relativamente à escolaridade quanto maior número de anos de escolaridade melhores os resultados, com diferenças significativas em 5 tarefas (p ≤ 0.0024). Observou-se uma correlação moderada (r=0.410) entre a capacidade cognitiva e a tarefa da palavra intrusa. Conclusão: Realizou-se a tradução e adaptação das tarefas de semântica do DuLIP, sendo esta bateria de testes essencial para a avaliação da linguagem no contexto de neurocirurgia, aumentando o tempo de vida do utente, a sua qualidade de vida e a minimização de sequelas no pós-operatório.
Mestrado em Terapia da Fala
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Books on the topic "Intraoperative brain mapping"

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Jahangiri, Faisal. Mapping of the Brain: Intraoperative Neurophysiological Monitoring. Independently Published, 2021.

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Deletis, Vedran, Francesco Sala, and Sedat Ulkatan. Transcranial electrical stimulation and intraoperative neurophysiology of the corticospinal tract. Edited by Charles M. Epstein, Eric M. Wassermann, and Ulf Ziemann. Oxford University Press, 2012. http://dx.doi.org/10.1093/oxfordhb/9780198568926.013.0008.

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Transcranial electrical stimulation is a well-recognized method for corticospinal tract (CT) activation. This article explains the use of TES during surgery and highlights the physiology of the motor-evoked potentials (MEPs). It describes the techniques and methods for brain stimulation and recording of responses. There are two factors that determine the depth of the current penetrating the brain, they are: choice of electrode montage for stimulation over the scalp and the intensity of stimulation. D-wave collision technique is a newly developed technique that allows mapping intraoperatively and finding the anatomical position of the CT within the surgically exposed spinal cord. Different mechanisms may be involved in the pathophysiology of postoperative paresis in brain and spinal cord surgeries so that different MEP monitoring criteria can be used to avoid irreversible damage and accurately predict the prognosis.
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Huntoon, Kristin, and J. Bradley Elder. High-Grade Gliomas. Oxford University Press, 2018. http://dx.doi.org/10.1093/med/9780190696696.003.0001.

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Glioblastoma is the most common primary malignant brain tumor. This chapter discusses the clinical presentation and initial workup for a patient with a suspected glioblastoma, as well as the optimal treatment strategy and prognosis. Diagnosis is typically made using magnetic resonance imaging. Optimal treatment involves maximal safe surgical resection followed by adjuvant chemotherapy and radiation therapy. Surgical adjuncts including intraoperative imaging modalities and brain mapping techniques help improve neurologic morbidity associated with surgery. Despite maximal treatment, virtually all patients with glioblastoma will experience recurrence of their tumor and may be considered for clinical trials or second-line therapy. This chapter highlights important pearls associated with management of patients with glioblastoma and written for those who are interested in neuro-oncology, neurosurgery, and the field of brain tumors.
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Ibrahim, Haitham, and Irene P. Osborn. The Patient for Epilepsy Surgery. Edited by David E. Traul and Irene P. Osborn. Oxford University Press, 2018. http://dx.doi.org/10.1093/med/9780190850036.003.0018.

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Epilepsy surgery as a treatment option is usually reserved for medically intractable epilepsy, when anticonvulsant medication has failed to achieve adequate seizure control and the seizure frequency impairs quality of life. Intraoperative brain mapping is often requested by the surgeon and necessitates special planning by the anesthesiologist to provide the best possible operating conditions. Awake craniotomy with the “asleep-awake-asleep” pattern can be considered as a technique in such procedures but requires cautious management for achieving maximum patient satisfaction. Certain patients are not appropriate candidates for craniotomy in the awake state, but general anesthesia can still be considered with specific considerations.
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Eseonu, Chikezie I., Jordina Rincon-Torroella, and Alfredo Quiñones-Hinojosa. Unusual Gliomas. Oxford University Press, 2018. http://dx.doi.org/10.1093/med/9780190696696.003.0002.

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Patients with intra-axial brain tumors often present with neurologic symptoms based on the anatomic location of their tumor. Workup for a brain tumor includes cranial imaging such as magnetic resonance imaging and computed tomography, as well as systemic imaging to assess for primary tumor if metastasis is suspected. Maximal safe resection optimizes outcomes including overall survival. Surgical decisions are based on variables such as medical comorbidities and anatomic location of the tumor. Gliomas in eloquent areas may require intraoperative cortical and subcortical mapping of motor and/or language areas to optimize safety and help maximize resection. Adjuvant chemotherapy and radiation lead to a median survival of 14.6 months for patients with glioblastoma. Rapidly recurring glioblastoma after surgery has a poor prognosis.
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Book chapters on the topic "Intraoperative brain mapping"

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Cervio, Andrés. "Intraoperative Brain Mapping." In Samii's Essentials in Neurosurgery, 87–102. Berlin, Heidelberg: Springer Berlin Heidelberg, 2014. http://dx.doi.org/10.1007/978-3-642-54115-5_9.

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Ganslandt, Oliver, Peter Grummich, and Christopher Nimsky. "Multimodal functional neuronavigation and intraoperative imaging." In Brain Mapping, 277–85. Vienna: Springer Vienna, 2011. http://dx.doi.org/10.1007/978-3-7091-0723-2_21.

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Szelényi, Andrea. "Intraoperative neurophysiological monitoring under general anesthesia." In Brain Mapping, 287–94. Vienna: Springer Vienna, 2011. http://dx.doi.org/10.1007/978-3-7091-0723-2_22.

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Mandonnet, Emmanuel. "Intraoperative electrical mapping: advances, limitations and perspectives." In Brain Mapping, 101–8. Vienna: Springer Vienna, 2011. http://dx.doi.org/10.1007/978-3-7091-0723-2_8.

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Duffau, Hugues. "Indications of awake mapping and selection of intraoperative tasks." In Brain Mapping, 321–34. Vienna: Springer Vienna, 2011. http://dx.doi.org/10.1007/978-3-7091-0723-2_25.

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Liang, Chia-Pin, Cha-Min Tang, and Yu Chen. "Intraoperative Optical Guidance for Neurosurgery." In Neurophotonics and Brain Mapping, 383–409. Boca Raton : Taylor & Francis, 2017.: CRC Press, 2017. http://dx.doi.org/10.1201/9781315373058-24.

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Wolf, Michael E., Richard P. Menger, Osama Ahmed, Shahdad Sherkat, and Babak Kateb. "Intraoperative Infrared Optical Imaging in Neurosurgery." In Neurophotonics and Brain Mapping, 325–40. Boca Raton : Taylor & Francis, 2017.: CRC Press, 2017. http://dx.doi.org/10.1201/9781315373058-20.

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Bello, Lorenzo, Antonella Castellano, Enrica Fava, Giuseppe Casaceli, Marco Riva, and Andrea Falini. "Preoperative Diffuson Tensor Imaging (DTI): contribution to surgical planning and validation by intraoperative electrostimulation." In Brain Mapping, 263–75. Vienna: Springer Vienna, 2011. http://dx.doi.org/10.1007/978-3-7091-0723-2_20.

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Kateb, Babak, Frank Boehm, Ray Chu, Sam Chang, Keith Black, and Shouleh Nikzad. "UV-Based Imaging Technologies for Intraoperative Brain Mapping." In Neurophotonics and Brain Mapping, 299–310. Boca Raton : Taylor & Francis, 2017.: CRC Press, 2017. http://dx.doi.org/10.1201/9781315373058-18.

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Champod, Anne S., Emily Ferreira, Céline Amiez, Penelope Kostopoulos, D. Louis Collins, Rolando Del Maestro, and Michael Petrides. "Preoperative and postoperative functional magnetic resonance imaging and intraoperative assessment of mental spatial transformations in patients undergoing surgery for brain tumors." In Brain Mapping, 167–80. Vienna: Springer Vienna, 2011. http://dx.doi.org/10.1007/978-3-7091-0723-2_13.

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Conference papers on the topic "Intraoperative brain mapping"

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Caredda, Charly, Laurent Mahieu-Williame, Raphael Sablong, Michael Sdika, Jacques Guyotat, and Bruno Montcel. "Intraoperative statistical parametric brain mapping using RGB imaging." In Diffuse Optical Spectroscopy and Imaging VIII, edited by Davide Contini, Yoko Hoshi, and Thomas D. O'Sullivan. SPIE, 2021. http://dx.doi.org/10.1117/12.2615232.

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Caredda, Charly, Laurent Mahieu-Williame, Raphaël Sablong, Michaël Sdika, Jacques Guyotat, and Bruno Montcel. "Optimal Spectral Combination of a Hyperspectral Camera for Intraoperative Hemodynamic and Metabolic Brain Mapping." In European Conference on Biomedical Optics. Washington, D.C.: Optica Publishing Group, 2021. http://dx.doi.org/10.1364/ecbo.2021.em2c.7.

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We present a Monte-Carlo study for the identification o f t he hyperspectral camera’ spectral bands for intraoperative hemodynamic and metabolic brain mapping. We also show that a RGB camera is suitable for hemodynamic brain mapping.
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Caredda, Charly, Laurent Mahieu-Williame, Raphaël Sablong, Michaël Sdika, Jacques Guyotat, and Bruno Montcel. "Intraoperative functional and metabolic brain mapping using hyperspectral imaging." In Clinical and Translational Neurophotonics 2020, edited by Steen J. Madsen, Victor X. D. Yang, and Nitish V. Thakor. SPIE, 2020. http://dx.doi.org/10.1117/12.2545968.

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Caredda, Charly, Laurent Mahieu-Williame, Raphaël Sablong, Michaël Sdika, Jacques Guyotat, and Bruno Montcel. "Real time intraoperative functional brain mapping using a RGB camera." In Preclinical and Clinical Optical Diagnostics, edited by J. Quincy Brown and Ton G. van Leeuwen. SPIE, 2019. http://dx.doi.org/10.1117/12.2526992.

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Caredda, Charly, Laurent Mahieu-Williame, Raphaël Sablong, Michaël Sdika, Jacques Guyotat, and Bruno Montcel. "Pixel-wise modified Beer-Lambert model for intraoperative functional brain mapping." In Preclinical and Clinical Optical Diagnostics, edited by J. Quincy Brown and Ton G. van Leeuwen. SPIE, 2019. http://dx.doi.org/10.1117/12.2527045.

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Xie, Yijing. "Multispectral imaging for intraoperative functional brain mapping: perspectives and new developments." In Hyperspectral Imaging and Applications II, edited by Nick J. Barnett, Aoife A. Gowen, and Haida Liang. SPIE, 2023. http://dx.doi.org/10.1117/12.2654640.

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Paschoal, Eric, Vanessa Bastos, Gláucia Jong-A-Liem, Vítor Yamaki, Fernando Paschoal Júnior, Joel de Jesus, Rommel Burbano, et al. "The Importance of Multimodal Intraoperative Neurophysiological Mapping for Surgical Brain Arteriovenous Malformation." In XXXII Congresso Brasileiro de Neurocirurgia. Thieme Revinter Publicações Ltda, 2018. http://dx.doi.org/10.1055/s-0038-1672400.

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Caredda, Charly, Laurent Mahieu-Williame, Raphael Sablong, Michael Sdika, Jacques Guyotat, and Bruno Montcel. "Optimal spectral combination of a hyperspectral camera for intraoperative hemodynamic and metabolic brain mapping." In Diffuse Optical Spectroscopy and Imaging VIII, edited by Davide Contini, Yoko Hoshi, and Thomas D. O'Sullivan. SPIE, 2021. http://dx.doi.org/10.1117/12.2615335.

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Imbault, M., H. Serroune, JL Gennisson, M. Tanter, D. Chauvet, L. Capelle, and S. Lehericy. "Functional ultrasound imaging of the human brain activity: An intraoperative pilot study for cortical functional mapping." In 2016 IEEE International Ultrasonics Symposium (IUS). IEEE, 2016. http://dx.doi.org/10.1109/ultsym.2016.7728505.

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Ogurtsova, Anna A., Andrey Egorovich Bykanov, Sergey Alekseevich Maryashev, Svetlana Borisovna Buklina, Vadim Yurievich Zhukov, and David Ilyich Pitskhelauri. "CORTICAL-CORTEX EVOKED POTENTIALS IN NEUROSURGERY." In NEW TECHNOLOGIES IN MEDICINE, BIOLOGY, PHARMACOLOGY AND ECOLOGY. Institute of information technology, 2021. http://dx.doi.org/10.47501/978-5-6044060-1-4.56.

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The article discusses the problem of assessing the state of functional relationships between speech cortical brain areas. The registration of cortical-cortical evoked potentials (CC-EP), problems of registration and interpretation of the results obtained are described. A unique ma-terial in Russia is presented: 27 patients with brain tumors under intraoperative mapping of the cortical speech areas using the CC-EP. The results obtained and options for their interpre-tation are discussed, as well as the prospects for further development of the method. The au-thors present their personal conclusions about the significance of the method and the accuracy of its results, as well as the relationship between the CC-EP parameters and the postoperative clinical state of speech functions in patients after removal of brain tumors.
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Reports on the topic "Intraoperative brain mapping"

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Kateb, Babak. IBMISPS (International Brain Mapping & Intraoperative Surgical Planning Symposium). Fort Belvoir, VA: Defense Technical Information Center, December 2005. http://dx.doi.org/10.21236/ada450740.

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