Document Detail

Two motion systems with common and separate pathways for color and luminance.
MedLine Citation:
PMID:  8248227     Owner:  NLM     Status:  MEDLINE    
We present psychological experiments that reveal two motion systems, a specific and an unspecific one. The specific system prevails at medium to high temporal frequencies. It comprises at least two separate motion pathways that are selective for color and for luminance and that do not interact until after the motion signal is extracted separately in each. By contrast, the unspecific system prevails at low temporal frequencies and it combines color and luminance signals at an earlier stage, before motion extraction. The successful implementation of an efficient and accurate technique for assessing equiluminance corroborates further the main findings. These results offer a general framework for understanding the nature of interactions between color and luminance signals in motion perception and suggest that previously proposed dichotomies in motion processing may be encompassed by the specific/unspecific dichotomy proposed here.
A Gorea; T V Papathomas; I Kovacs
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, Non-P.H.S.    
Journal Detail:
Title:  Proceedings of the National Academy of Sciences of the United States of America     Volume:  90     ISSN:  0027-8424     ISO Abbreviation:  Proc. Natl. Acad. Sci. U.S.A.     Publication Date:  1993 Dec 
Date Detail:
Created Date:  1994-01-04     Completed Date:  1994-01-04     Revised Date:  2009-11-18    
Medline Journal Info:
Nlm Unique ID:  7505876     Medline TA:  Proc Natl Acad Sci U S A     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  11197-201     Citation Subset:  IM; S    
Laboratoire de Psychologie Expérimentale, Centre National de la Recherche Scientifique and René Descartes University, Paris, France.
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MeSH Terms
Color Perception / physiology
Motion Perception / physiology*

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