Document Detail

Development of spatiotemporal mechanisms in infant vision.
MedLine Citation:
PMID:  3195066     Owner:  NLM     Status:  MEDLINE    
In adult spatiotemporal vision information is processed in parallel by a number of mechanisms tuned for orientation and spatial frequency. An examination of infant neuroanatomical data suggests that three major factors are involved in the development of these mechanisms: (1) Growth of foveal cone outer segments causes an increase in mechanism sensitivity. (2) Migration of foveal cones produces a change in spatial scale and a progressive shift of mechanism tuning towards higher spatial frequencies. (3) Development of cortical inhibition transforms low-pass into bandpass spatial frequency and orientation tuning. These changes are developed into a quantitative model which is shown to provide a coherent interpretation of many of the psychophysical data on infant vision.
H R Wilson
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Publication Detail:
Type:  Journal Article; Research Support, U.S. Gov't, P.H.S.    
Journal Detail:
Title:  Vision research     Volume:  28     ISSN:  0042-6989     ISO Abbreviation:  Vision Res.     Publication Date:  1988  
Date Detail:
Created Date:  1988-12-28     Completed Date:  1988-12-28     Revised Date:  2008-11-21    
Medline Journal Info:
Nlm Unique ID:  0417402     Medline TA:  Vision Res     Country:  ENGLAND    
Other Details:
Languages:  eng     Pagination:  611-28     Citation Subset:  IM    
Department of Ophthalmology and Visual Science, University of Chicago, IL 60637.
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MeSH Terms
Aging / physiology
Child Development
Evoked Potentials, Visual
Fovea Centralis
Models, Neurological
Photoreceptor Cells / physiology
Retina / growth & development
Space Perception / physiology*
Time Factors
Visual Acuity
Visual Cortex / growth & development
Grant Support

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