Afterimage size is modulated by size-contrast illusions

Journal of Vision
Irene SperandioMelvyn A Goodale

Abstract

Traditionally, the perceived size of negative afterimages has been examined in relation to E. Emmert's law (1881), a size-distance equation that states that changes in perceived size of an afterimage are a function of the distance of the surface on which it is projected. Here, we present evidence that the size of an afterimage is also modulated by its surrounding context. We employed a new version of the Ebbinghaus-Titchener illusion with flickering surrounding stimuli and a static inner target that generated a vivid afterimage of the latter but not the former. Observers were asked to give an initial manual estimate of the size of the inner target during the adaptation phase followed by another manual estimate of the size of the afterimage during the test phase. Manual estimates were affected by the size-contrast illusion both when the surrounding contextual elements were present during afterimage induction and when the surrounding elements were absent during the viewing of the afterimage (Experiment 1). Such a modulation in perceived size, however, did not occur when observers viewed only the flickering surrounding context for a prolonged period of time and then estimated the size of a static target presented on the monitor af...Continue Reading

Citations

Mar 29, 2013·PloS One·D Samuel Schwarzkopf, Geraint Rees
Jan 11, 2014·Attention, Perception & Psychophysics·Hiroshi OnoLinda Lillakas
Feb 10, 2016·Annual Review of Vision Science·Michael A Webster
Jul 23, 2014·Consciousness and Cognition·Ravinder Jerath, Molly W Crawford
Jan 21, 2015·Journal of Cognitive Neuroscience·Sylvia KreutzerGereon R Fink
May 21, 2016·Frontiers in Human Neuroscience·Simone GoriAndrea Facoetti
Feb 17, 2017·Scientific Reports·Peter VetoNikolaus F Troje
Nov 24, 2016·Journal of Autism and Developmental Disorders·Irene SperandioPhilippe A Chouinard
Nov 28, 2016·Psychological Research·Giulia PreteLuca Tommasi
Mar 28, 2020·Experimental Brain Research·Amy Siobhan MillardPhilippe A Chouinard

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