Revue d'Electroencéphalographie et de Neurophysiologie Clinique最新文献

{"title":"Etude des surfaces des reponses evoquees musculaires criteres de blocs de conduction","authors":"G. Chauplannaz,&nbsp;J. Losano,&nbsp;B. Bady","doi":"10.1016/S0370-4475(87)80013-8","DOIUrl":"10.1016/S0370-4475(87)80013-8","url":null,"abstract":"<div><p>Les valeurs de référence des surfaces des réponses évoquées musculaires (REM) des nerfs médian et sciatique poplité externe ont été établies chez 24 sujets témoins sains. Leur dispersion est comparable à celle de l'amplitude des REM. A partir des différences de surface entre les réponses obtenues par stimulation distale et proximale, des critères de bloc de conduction sont proposés.</p></div><div><p>Reference values of areas of the compound muscle action potential (CMAP) of the median and popliteal nerves were established in 24 healthy control subjects. The distribution of the amplitude and of the area of the CMAP negative peak are similar. From area differences between CMAP obtained with proximal and distal stimulation criteria for conduction block are proposed.</p></div>","PeriodicalId":21476,"journal":{"name":"Revue d'Electroencéphalographie et de Neurophysiologie Clinique","volume":"17 ","pages":"Pages 107s-111s"},"PeriodicalIF":0.0,"publicationDate":"1987-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S0370-4475(87)80013-8","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73030891","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Approche de type systeme expert en electromyographie","authors":"J.F. Pinel ,&nbsp;H. Kiani ,&nbsp;G. Carrault ,&nbsp;P. Toulouse ,&nbsp;R. Lebars ,&nbsp;J.L. Coatrieux","doi":"10.1016/S0370-4475(87)80014-X","DOIUrl":"10.1016/S0370-4475(87)80014-X","url":null,"abstract":"<div><p>Une approche originale du traitement de l'information électromyographique est présentée, dont le principal objectif est le diagnostic des pathologies neuro-musculaires. La structure du système est basée sur trois modules (SIGMA, DIALOG, EXPERT) chacun possédant une base de connaissances locale spécialisée. Les principales caractéristiques sont présentées: son originalité tient, d'une part, à sa structure modulaire, distribuée et hiérarchisée, et, d'autre part, à sa cohérence conceptuelle permettant d'intégrer des méthodologies de traitement du signal, d'analyses de données et d'intelligence artificielle. Les avantages de cette approche se mesureront en terme d'optimisation de l'examen électromyographique.</p></div><div><p>A new approach in electromyographic information processing is proposed, aimed at neuro-muscular diseases diagnosis. The system framework is based on three modules (SIGMA, DIALOG, EXPERT), each of them being associated to specialized knowledge base. The main features are described: modular, distributed and hierarchical structure; conceptual redevance due to the capability in integrating coherently three different fields signal processing, data analysis, artificial intelligence. The interest of this scheme is directly related to the optimization of the electromyographic examination as it should appear in a next future.</p></div>","PeriodicalId":21476,"journal":{"name":"Revue d'Electroencéphalographie et de Neurophysiologie Clinique","volume":"17 ","pages":"Pages 113s-121s"},"PeriodicalIF":0.0,"publicationDate":"1987-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S0370-4475(87)80014-X","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82455201","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Developpement de nouvelles techniques","authors":"I. Hausmanowa-Petrusewicz","doi":"10.1016/S0370-4475(87)80010-2","DOIUrl":"10.1016/S0370-4475(87)80010-2","url":null,"abstract":"<div><p>Le développement impétueux de nouvelles méthodes qui suivit le Congrès de Pavie peut être ramené aux orientations suivantes: 1) extension aux autres domaines de la médecine de nouvelles techniques issues de travaux cliniques sur les neuropathies et les myopathies; 2) amélioration de la sensibilité, de la sélectivité et de la mesurabilité de l'évaluation des électromyogrammes. L'approfondissement de la croissance de l'unité motrice a été rendu possible par l'introduction de nouvelles techniques: multi-électrodes, macro-électrodes, EMG cohérente, scannographie EMG et électrode de fibre unique. Le développement de la neurographie clinique s'est orienté vers le perfectionnement des études sur la conduction motrice et sensitive, le fractionnement du potentiel composite nerveux, les techniques de collision. Les nouvelles techniques ont enfin permis l'application des potentiels évoqués somesthésiques. Les nouvelles techniques et méthodes nécessitaient en général une augmentation de la précision, de la sensibilité et de la vitesse des mesures. Les quantités de plus en plus importantes de données difficilement maîtrisables par l'observateur ont amené le recours à l'ordinateur, qui se trouve être l'outil de base de la majorité de nouvelles méthodes quantitatives utilisées en EMG clinique. L'essentiel de ces méthodes réside dans l'évaluation quantitative des paramètres des potentiels unitaires.</p></div><div><p>The rapid development of new methods which followed the Pavia Congress in 1961 took different orientations: (1) the extension to other medical fields of new techniques stemming from clinical investigations of neurogenic atrophy and myopathies; (2) the improvement in sensitivity, selectivity and measurability of electromyographic evaluation. The extended knowledge of the motor unit was due to the emergence of new techniques such as the multi-electrodes, the macro-electrodes, coherent EMG, EMG scannography and the single fibre electrode. The development of clinical neurography oriented itself towards completion of motor and sensory conduction studies, the fractionning of compound nerve action potential, collision techniques. The new techniques have equally allowed the application of somatosensory evoked potentials. The new techniques generally required more precise, more sensitive and more rapid assessments. The increasing amount of data led to the use of computers, which are now the basic tool for the new quantitative methods used in clinical EMG. These methods essentially concern the quantitative evaluation of unitary potential parameters.</p></div>","PeriodicalId":21476,"journal":{"name":"Revue d'Electroencéphalographie et de Neurophysiologie Clinique","volume":"17 ","pages":"Pages 85s-90s"},"PeriodicalIF":0.0,"publicationDate":"1987-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S0370-4475(87)80010-2","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88922026","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Communications libres I: Compressions nerveuses et syndromes canalaires","authors":"","doi":"10.1016/S0370-4475(87)80015-1","DOIUrl":"https://doi.org/10.1016/S0370-4475(87)80015-1","url":null,"abstract":"","PeriodicalId":21476,"journal":{"name":"Revue d'Electroencéphalographie et de Neurophysiologie Clinique","volume":"17 ","pages":"Pages 125s-142s"},"PeriodicalIF":0.0,"publicationDate":"1987-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S0370-4475(87)80015-1","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"137354597","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Communications libres IVB: Analyse spectrale","authors":"","doi":"10.1016/S0370-4475(87)80023-0","DOIUrl":"https://doi.org/10.1016/S0370-4475(87)80023-0","url":null,"abstract":"","PeriodicalId":21476,"journal":{"name":"Revue d'Electroencéphalographie et de Neurophysiologie Clinique","volume":"17 ","pages":"Pages 175s-180s"},"PeriodicalIF":0.0,"publicationDate":"1987-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S0370-4475(87)80023-0","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"137386425","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Techniques d'EMG utilisant une electrode de fibre unique: Apport de l'ordinateur","authors":"J. Pouget","doi":"10.1016/S0370-4475(87)80012-6","DOIUrl":"10.1016/S0370-4475(87)80012-6","url":null,"abstract":"<div><p>L'électrode dite de fibre unique mise au point par Ekstedt et Stalberg, permettant l'enregistrement sélectif de l'activité électrique d'une seule fibre musculaire est actuellement utilisée dans différentes techniques d'EMG computérisé.</p><p>L'analyse du signal recueilli par cette électrode considère essentiellement deux paramètres, le jitter et la densité de fibres. L'ordinateur permet la mesure rapide et précise du jitter, la visualisation sous forme d'histogrammes séquentiels ou non séquentiels de l'intervalle de temps séparant les deux potentiels d'une paire de fibres et de l'intervalle de temps séparant les décharges successives de l'unité motrice. On peut ainsi apprécier la fréquence de décharge de l'unité motrice testée et sa régularité.</p><p>L'utilisation du signal de fibre unique permet également d'identifier l'activité d'une seule unité motrice au cours de différentes techniques. L'EMG de balayage («scanning EMG) reflète l'activité électrique de l'unité motrice dans un plan de section musculaire et donne des informations sur l'arrangement spatial de l'unité motrice. La macro-EMG permet d'apprécier la taille de l'unité motrice entière et surtout le nombre des fibres musculaires qui la constituent. L'identification des potentiels d'unité motrice recueillis par une électrode concentrique à l'aide d'une électrode de fibre unique (électrode double canal) permet une bonne individualisation du potentiel d'unité motrice et une acquisition plus objective des potentiels. La combinaison de ces techniques permet d'aborder la microphysiologie, la cartographie et la taille de l'unité motrice.</p></div><div><p>The Single fiber electrode, described by Ekstedt and Stalberg, selectively records the electrical activity of single muscle fibers and is used in several computerized EMG techniques.</p><p>Analysis of the signal recorded with this electrode concerns two main parameters: jitter and fiber density. The computer gives a fastand precise measurement of the jitter, sequential and non sequential histograms of inter-potential and inter-discharge Intervals. Discharge rate of the motor units can be evaluated.</p><p>The Single fiber signal is used to identify a single motor unit activity in other EMG techniques.</p><p>The scanning EMG appreciates the electrical activity of a motor unit in a muscle section plan and gives information about the spatial distribution of the motor units.</p><p>Macro-EMG appreciates the size of the whole motor unit and mainly the number of the muscle fibers of this unit.</p><p>The two channel electrode identifies motor unit potentials recorded with a concentric needle by a single fiber potential for a better and more objective acquisition. Combination of these techniques gives information about microphysiology, spatial distribution and size of the motor unit.</p></div>","PeriodicalId":21476,"journal":{"name":"Revue d'Electroencéphalographie et de Neurophysiologie Clinique","volume":"17 ","pages":"Pages 99s-105s"},"PeriodicalIF":0.0,"publicationDate":"1987-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S0370-4475(87)80012-6","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88024521","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Communications libres V: Pathologie neuro-musculaire","authors":"","doi":"10.1016/S0370-4475(87)80025-4","DOIUrl":"https://doi.org/10.1016/S0370-4475(87)80025-4","url":null,"abstract":"","PeriodicalId":21476,"journal":{"name":"Revue d'Electroencéphalographie et de Neurophysiologie Clinique","volume":"17 ","pages":"Pages 184s-193s"},"PeriodicalIF":0.0,"publicationDate":"1987-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S0370-4475(87)80025-4","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"137332647","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Etude electrophysiologique des troncs nerveux moteurs et des voies reflexes au cours du developpement chez l'enfant normal","authors":"M.-F. Vecchierini-Blineau","doi":"10.1016/S0370-4475(87)80008-4","DOIUrl":"10.1016/S0370-4475(87)80008-4","url":null,"abstract":"<div><p>L'examen neurophysiologique chez l'enfant comprend, entre autres examens, la pratique de plusieurs vitesses de conduction nerveuse motrice et la recherche de réflexes mono- ou polysynaptiques selon le problème clinique posé. Dans tous les cas, cet examen nécessite une approche particulière à l'enfant, une méthodologie rigoureuse et l'usage d'un matériel adapté; ces diverses contraintes sont d'abord analysées. Puis est décrite l'évolution des vitesses de conduction nerveuse proximales et des VCN proprioceptives et motrices, distales, au cours de la maturation, sur les différents troncs nerveux. Enfin, les modifications des réponses réflexes cutanées polysynaptiques au cours des premières années de vie sont rappelées et leur intérêt souligné. La connaissance de ces normes est indispensable pour une pratique et une interprétation correctes des résultats obtenus chez des enfants atteints d'affections pathologiques très variées.</p></div><div><p>In infants, the neurophysiological examinations include, among others, several motor nerve conduction velocities and mono or polysynaptic reflexes according to the clinical problem. In all cases, this examination requires a specific approach, a rigorous methodology and an adapted material; these facts are first analysed, then is described the evolution of proximal and distal, proprioceptive and motor nerve conduction velocities, on the different nerve trunks, during maturation. Finally, polysynaptic cutaneous reflexes evolution during the first years of life are described and their clinical interest enhanced. Normal values have to be known for a good practice and interpretation of results found in different pathological cases.</p></div>","PeriodicalId":21476,"journal":{"name":"Revue d'Electroencéphalographie et de Neurophysiologie Clinique","volume":"17 ","pages":"Pages 65s-72s"},"PeriodicalIF":0.0,"publicationDate":"1987-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S0370-4475(87)80008-4","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83379833","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Communications libres VIII: Potentiels évoqués somesthésiques","authors":"","doi":"10.1016/S0370-4475(87)80028-X","DOIUrl":"https://doi.org/10.1016/S0370-4475(87)80028-X","url":null,"abstract":"","PeriodicalId":21476,"journal":{"name":"Revue d'Electroencéphalographie et de Neurophysiologie Clinique","volume":"17 ","pages":"Pages 203s-207s"},"PeriodicalIF":0.0,"publicationDate":"1987-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S0370-4475(87)80028-X","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"137332649","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Communications libres IIC: Polyneuropathies d'origine toxique","authors":"","doi":"10.1016/S0370-4475(87)80018-7","DOIUrl":"https://doi.org/10.1016/S0370-4475(87)80018-7","url":null,"abstract":"","PeriodicalId":21476,"journal":{"name":"Revue d'Electroencéphalographie et de Neurophysiologie Clinique","volume":"17 ","pages":"Pages 149s-150s"},"PeriodicalIF":0.0,"publicationDate":"1987-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S0370-4475(87)80018-7","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"137386421","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}