Document Detail


The development of spatial-frequency selectivity in kitten striate cortex.
MedLine Citation:
PMID:  7320858     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
1. Single units were recorded in the striate cortex of kittens aged between 2 and 12 weeks. Contrast sensitivity measurements made using moving sinusoidal gratings were used to construct spatial-frequency tuning curves. 2. In young kittens cells had low sensitivities, responded only to low spatial frequencies and were unselective for spatial frequency. In addition 30% of the cells recorded in the youngest kittens were unresponsive to visual stimuli. 3. Sensitivity improved to near-adult values within 5-6 weeks. 4. Best spatial frequency improved more gradually, so that even in the oldest kittens best spatial frequencies were lower than adult values. 5. Selectivity for spatial frequency, considered both in terms of the numbers of selective cells and the narrowness of their tuning curves, improved rapidly, and reached adult values within the first 6 weeks. 6. These results are discussed in relation to other developmental studies.
Authors:
A M Derrington; A F Fuchs
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  The Journal of physiology     Volume:  316     ISSN:  0022-3751     ISO Abbreviation:  J. Physiol. (Lond.)     Publication Date:  1981 Jul 
Date Detail:
Created Date:  1982-03-13     Completed Date:  1982-03-13     Revised Date:  2009-11-18    
Medline Journal Info:
Nlm Unique ID:  0266262     Medline TA:  J Physiol     Country:  ENGLAND    
Other Details:
Languages:  eng     Pagination:  1-10     Citation Subset:  IM; S    
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MeSH Terms
Descriptor/Qualifier:
Age Factors
Animals
Cats
Neurons / physiology
Space Perception / physiology*
Visual Acuity
Visual Cortex / cytology,  growth & development,  physiology*
Comments/Corrections

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