flash-lag effect

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A movement illusion whereby a brief flash occurring at the same position as a moving object or image appears to lag behind the object or image. It also occurs with a moving sound source. It was first reported by the German Gestalt psychologist Wolfgang Metzger (1899–1979) in an article in the journal Psychologische Forschung in 1931. FLE abbrev.

Subjects: Psychology.

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