movement after image

...This is called Emmert's law. Also, if you gaze at an object moving in a certain direction for a while and then look at a stationary object, it appears to move in the opposite direction. This is called a "motion afterimage" (or "motion aftereffect" or "waterfall illusion"). Afterimages are a universal phenomenon that lasts for a few seconds immediately after the stimulus is removed, but they can appear for a few hours or days afterwards in certain people, and are called eidetic images.

*Some explanations of terms that refer to "movement after image" are listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

…これを〈エンメルトの法則Emmert’s law〉という。また一定方向に運動している対象をしばらく注視してから静止対象をみると，それが逆方向に動いてみえるのを〈運動残像movement after image〉(または〈運動残効〉〈滝の錯視〉)という。残像は刺激除去直後の数秒間持続する普遍的現象であるが，特定の人にのみ数時間，数日後にも現れることがあり，これを〈直観像eidetic image〉という。…

※「movement after image」について言及している用語解説の一部を掲載しています。

出典｜株式会社平凡社世界大百科事典 第２版について | 情報