Document Detail

Acute lesions of primary visual cortical areas in adult cats inactivate responses of neurons in higher visual cortices.
MedLine Citation:
PMID:  22467399     Owner:  NLM     Status:  In-Data-Review    
Psychophysical studies suggest that lateral extrastriate visual cortical areas in cats may mediate the sparing of vision largely by network reorganization following lesions of early visual cortical areas. To date, however, there is little direct physiological evidence to support this hypothesis. Using in vivo single-unit recording techniques, we examined the response of neurons in areas 19, 21, and 20 to different types of visual stimulation in cats with or without acute bilateral lesions in areas 17 and 18. Our results showed that, relative to the controls, acute lesions inactivated the response of 99.3% of neurons to moving gratings and 93% of neurons to flickering square stimuli in areas 19, 21, and 20. These results indicated that acute lesions of primary visual areas in adult cats may impair most visual abilities. Sparing of vision in cats with neonatal lesions in early visual cortical areas may result largely from a postoperative reorganization of visual pathways from subcortical nucleus to extrastriate visual cortical areas.
Hui Zhang; Jian-Jun Meng; Ke Wang; Rui-Long Liu; Min-Min Xi; Tian-Miao Hua
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Dong wu xue yan jiu = Zoological research / "Dong wu xue yan jiu" bian ji wei yuan hui bian ji     Volume:  33     ISSN:  0254-5853     ISO Abbreviation:  Zool. Res.     Publication Date:  2012 Apr 
Date Detail:
Created Date:  2012-04-02     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  100961499     Medline TA:  Dongwuxue Yanjiu     Country:  China    
Other Details:
Languages:  eng     Pagination:  218-24     Citation Subset:  IM    
School of Life Science, Anhui Normal University, Wuhu Anhui 241000, China.
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