Afterimages from unseen stimuli

doi:10.1068/i0547sas

SHORT AND SWEET

Afterimages from unseen stimuli

Stuart Anstis

Department of Psychology UC San Diego La Jolla CA 92093, USA

sanstis@ucsd.edu

Janos Geier

Stereo Vision Ltd, Nádasdy Kálmán utca 34, Budapest, Hungary

janos@geier.hu

Mariann Hudak

Budapest University of Technology and Economics, Department of Cognitive Science, Egry József utca 1, Budapest, Hungary

mariann@stereovision.hu

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Abstract. Observers adapted to a field of randomly coloured twinkling tiles, in which was embedded a faint, subthreshold green letter. Observers failed to discern this letter, but they readily reported its pink afterimage afterwards. This demonstrates a storage of changing colours over time; adaptation occurs for the average of each retinal point.

Cite as: Anstis S, Geier J, Hudak M, 2012, "Afterimages from unseen stimuli" i-Perception 3(8) 499–502
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DOI: 10.1068/i0547sas

ISSN: 2041-6695 (electronic only)

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