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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Cerebral polyopia ： ウィキペディア英語版 Cerebral polyopia Cerebral diplopia or polyopia describes seeing two or more images arranged in ordered rows and columns after fixation on a stimulus. The polyopic images occur monocular bilaterally (one eye open on both sides) and binocularly (both eyes open), differentiating it from ocular diplopia or polyopia. The number of duplicated images ranges from one to hundreds. Some patients report difficulty in distinguishing the replicated images from the real images, while others report that the false images differ in size, intensity, or color.〔 Cerebral polyopia is sometimes confused with palinopsia (visual trailing), although in cerebral polyopia, the duplicated images are of a stationary object. Movement of the original object causes all of the duplicated images to move, or the polyopic images disappear during motion. In palinoptic polyopia, movement causes each polyopic image to leave an image in its wake, creating hundreds of persistent images (entomopia).〔 Infarctions, tumors, multiple sclerosis, trauma, encephalitis, migraines, and seizures have been reported to cause cerebral polyopia.〔 Cerebral polyopia has been reported in an extrastriate visual cortex lesions, which is important for detecting motion, orientation, direction, and motion.〔 Cerebral polyopia often occurs in homoynous field deficits, suggesting deafferentation hyperexcitability could be a possible mechanism, similar to visual release hallucinations (Charles Bonnet syndrome). ==References== 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Cerebral polyopia」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.