Document Detail

Surround-induced foveal afterimage pulsation: evidence for a long-range neural effect.
MedLine Citation:
PMID:  16243376     Owner:  NLM     Status:  MEDLINE    
We demonstrate that an afterimage resulting from a strong foveal light flash can be made to pulsate by luminance modulation of a surrounding annulus as far as 8 deg away. Afterimage pulsation persists even if all artifacts due to pupil size, stray light and simultaneous contrast are ruled out. This suggests an origin by a long-range neural process acting from the remote surround. The effect is interpreted in terms of an adaptive gain control optimizing the responses of visual cells.
Tobias Otte; Arne Valberg; Lothar Spillmann
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2005-10-21
Journal Detail:
Title:  Vision research     Volume:  46     ISSN:  0042-6989     ISO Abbreviation:  Vision Res.     Publication Date:  2006 Apr 
Date Detail:
Created Date:  2006-01-17     Completed Date:  2006-06-29     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  0417402     Medline TA:  Vision Res     Country:  England    
Other Details:
Languages:  eng     Pagination:  1187-93     Citation Subset:  IM    
Brain Research Unit, Department of Neurology, University Hospital, Freiburg, Breisacher Strabe 64, D-79106 Freiburg, Germany.
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MeSH Terms
Contrast Sensitivity
Depth Perception / physiology*
Neuropsychological Tests
Optical Illusions*
Photic Stimulation*
Regression Analysis

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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