Document Detail


Visual motion aftereffects: differential adaptation and test stimulation.
MedLine Citation:
PMID:  9536379     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The local motion adaptation at the basis of the motion aftereffect (MAE) can be expressed in a variety of ways, depending upon the structure of the test display [Wade et al. (1996). Vision Research, 36, 2167-2175]. Three experiments are reported, which examined the characteristics of the test display and of the local adaptation process. In Experiment 1, MAEs were recorded in the central of three test gratings but their directions depended on the location of the centre relative to the adapting gratings. The effects of adapting motions in different directions were examined in Experiments 2 and 3, in which one or two adapting gratings were presented above or above and below a fixation cross. The upper grating always received the same (leftward) direction of motion during adaptation, and the lower grating was: moving in the opposite direction, stationary, moving in the same direction, or absent. The results indicate that no MAE is visible in the upper grating when a single test grating is observed experiment 2) and only occurs with two test gratings following differential adaptation between the upper and lower gratings (Experiment 3). Thus, the MAE occurs as a consequence of adapting restricted retinal regions to motion but it can only be expressed when differentially adapted regions are also tested.
Authors:
N J Wade; V Salvano-Pardieu
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Vision research     Volume:  38     ISSN:  0042-6989     ISO Abbreviation:  Vision Res.     Publication Date:  1998 Feb 
Date Detail:
Created Date:  1998-04-15     Completed Date:  1998-04-15     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  0417402     Medline TA:  Vision Res     Country:  ENGLAND    
Other Details:
Languages:  eng     Pagination:  573-8     Citation Subset:  IM; S    
Affiliation:
Department of Psychology, University of Dundee, U.K. n.j.wade@dundee.ac.uk
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MeSH Terms
Descriptor/Qualifier:
Adaptation, Ocular / physiology*
Afterimage / physiology*
Female
Humans
Male
Pattern Recognition, Visual / physiology
Time Factors
Visual Perception / physiology*

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