tag:blogger.com,1999:blog-41077601086378704672024-03-07T23:35:05.536-08:00oOoO FriMoUZ OoOoMouzhttp://www.blogger.com/profile/09128718545818966262noreply@blogger.comBlogger1125tag:blogger.com,1999:blog-4107760108637870467.post-31571321652065121892010-02-18T08:45:00.000-08:002010-02-18T08:46:53.537-08:00Essai 1 pour le blog<meta equiv="Content-Type" content="text/html; charset=utf-8"><meta name="ProgId" content="Word.Document"><meta name="Generator" content="Microsoft Word 12"><meta name="Originator" content="Microsoft Word 12"><link rel="File-List" href="file:///C:%5CUsers%5CPAMLA%7E1%5CAppData%5CLocal%5CTemp%5Cmsohtmlclip1%5C01%5Cclip_filelist.xml"><!--[if gte mso 9]><xml> <o:officedocumentsettings> <o:relyonvml/> <o:allowpng/> </o:OfficeDocumentSettings> </xml><![endif]--><link rel="themeData" href="file:///C:%5CUsers%5CPAMLA%7E1%5CAppData%5CLocal%5CTemp%5Cmsohtmlclip1%5C01%5Cclip_themedata.thmx"><link rel="colorSchemeMapping" 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Definitions */ p.MsoNormal, li.MsoNormal, div.MsoNormal {mso-style-unhide:no; mso-style-qformat:yes; mso-style-parent:""; margin-top:0cm; margin-right:0cm; margin-bottom:10.0pt; margin-left:0cm; text-align:justify; line-height:150%; mso-pagination:widow-orphan; font-size:12.0pt; mso-bidi-font-size:11.0pt; font-family:"Calibri","sans-serif"; mso-fareast-font-family:Calibri; mso-bidi-font-family:"Times New Roman"; mso-fareast-language:EN-US;} .MsoChpDefault {mso-style-type:export-only; mso-default-props:yes; font-size:10.0pt; mso-ansi-font-size:10.0pt; mso-bidi-font-size:10.0pt; mso-ascii-font-family:Calibri; mso-fareast-font-family:Calibri; mso-hansi-font-family:Calibri;} @page Section1 {size:612.0pt 792.0pt; margin:70.85pt 70.85pt 70.85pt 70.85pt; mso-header-margin:36.0pt; mso-footer-margin:36.0pt; mso-paper-source:0;} div.Section1 {page:Section1;} --> </style><!--[if gte mso 10]> <style> /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Tableau Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-qformat:yes; mso-style-parent:""; mso-padding-alt:0cm 5.4pt 0cm 5.4pt; mso-para-margin:0cm; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:11.0pt; font-family:"Calibri","sans-serif"; mso-ascii-font-family:Calibri; mso-ascii-theme-font:minor-latin; mso-fareast-font-family:"Times New Roman"; mso-fareast-theme-font:minor-fareast; mso-hansi-font-family:Calibri; mso-hansi-theme-font:minor-latin; mso-bidi-font-family:"Times New Roman"; mso-bidi-theme-font:minor-bidi;} </style> <![endif]--><span style="font-size: 12pt; line-height: 150%; font-family: "Times New Roman","serif";">L’objectif de cette étude est d’évaluer et de comparer les aptitudes de perception visuelle du mouvement chez des patients atteints de lésions périphériques (névrite optique) et centrales (hémianopsie) du système visuel. Ces capacités visuelles sont analysées à deux niveaux : le premier, très précoce, correspond à détecter un mouvement lors du déplacement d’un flux cohérent de points ; le second revient à identifier correctement un objet commun dont la forme est révélée grâce à deux mouvements de points contradictoires. En d’autres termes, la première tâche vise à solliciter préférentiellement l’action de détecteurs dits « précoces » présents dès l’aire visuelle primaire (Hildreth, 1984), la seconde est supposée permettre d’analyser des processus plus élaborés, nécessitant l’intégration d’informations venant à la fois du système de traitement visuel du mouvement et celui de la forme (Schenk et Zihl, 1996). Des études montrent un déficit dans la détection de mouvement (Barton & Rizzo, 1994) et la reconnaissance de formes dans le mouvement chez des patients atteints de névrite optique (Regan et al., 1991), car leur lésion se situe très en amont de la chaîne de traitement. Aucune étude n’explore la vision du mouvement en champ central chez les patients hémianopsiques, mais leur atteinte unilatérale est supposée </span>Mouzhttp://www.blogger.com/profile/09128718545818966262noreply@blogger.com0