{"id":153077,"date":"2013-06-05T00:00:00","date_gmt":"2013-06-05T00:00:00","guid":{"rendered":"https:\/\/v2.optiknow.ca\/letrange-vision-des-rats\/"},"modified":"2013-06-05T00:00:00","modified_gmt":"2013-06-05T00:00:00","slug":"letrange-vision-des-rats","status":"publish","type":"post","link":"https:\/\/v2.optiknow.ca\/fr\/2013\/06\/05\/letrange-vision-des-rats\/","title":{"rendered":"L\u0092\u00e9trange vision des rats"},"content":{"rendered":"<p>Des chercheurs allemands ont r\u00e9cemment d\u00e9montr\u00e9 que les rats bougent leurs yeux dans des directions oppos\u00e9es, verticalement et horizontalement, lorsqu'ils se d\u00e9placent.<\/p>\n<p>\u00a0<\/p>\n<p>Cette d\u00e9couverte surprenante signifie qu'il est hors de question pour ces animaux de fusionner l'information visuelle en une seule image, comme le font les humains. Leurs mouvements oculaires leur permettent toutefois de voir en permanence tout l'espace au-dessus d'eux. Cela pourrait \u00eatre une adaptation pour les aider \u00e0 affronter la menace des oiseaux pr\u00e9dateurs, \u00e0 laquelle la plupart des rongeurs doivent faire face.<\/p>\n<p>\u00a0<\/p>\n<p>Chez les humains, les yeux doivent continuellement \u00eatre align\u00e9s vers la m\u00eame direction pour pouvoir fixer un objet. Une d\u00e9viation de moins d'un degr\u00e9 du champ de vision peut faire voir double. Chez les rats, les mouvements oculaires oppos\u00e9s entre l'\u009cil droit et l'\u009cil gauche signifient que la variation de cette ligne de vision peut atteindre 40 degr\u00e9s sur le plan horizontal et 60 degr\u00e9s sur le plan vertical.\u00a0\u00a0<\/p>\n<p>\u00a0<\/p>\n<p>Les chercheurs de l'Institut Max Planck de Cybern\u00e9tique Biologique postulent que, bien que ces mouvements emp\u00eachent la fusion des deux champs visuels, et donc la perception d'une image nette en trois dimensions, la visibilit\u00e9 permanente en direction d'une potentielle attaque venue du ciel am\u00e9liore grandement les chances de survie de l'animal.<\/p>\n<p>\u00a0<\/p>\n<p>Source\u00a0: <a title=\"L'\u00e9trange vision des rats   \" href=\"http:\/\/www.alphagalileo.org\/ViewItem.aspx?ItemId=131503&amp;CultureCode=en\">http:\/\/www.alphagalileo.org\/ViewItem.aspx?ItemId=131503&amp;CultureCode=en<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Des chercheurs allemands ont r\u00e9cemment d\u00e9montr\u00e9 que les rats bougent leurs yeux dans des directions oppos\u00e9es, verticalement et horizontalement, lorsqu'ils se d\u00e9placent. \u00a0 Cette d\u00e9couverte surprenante signifie qu'il est hors [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_angie_page":false,"page_builder":"","footnotes":""},"categories":[23133],"tags":[],"class_list":["post-153077","post","type-post","status-publish","format-standard","hentry","category-nouvelles"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.0 - 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