Journal
SCIENCE
Volume 287, Issue 5460, Pages 2029-2032Publisher
AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.1126/science.287.5460.2029
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- NEI NIH HHS [EY06824, R37-EY02874, F32 EY006824, R37 EY002874-21, R37 EY002874] Funding Source: Medline
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Monocular deprivation during early postnatal development remodels the circuitry of the primary visual cortex so that most neurons respond poorly to stimuli presented to the deprived eye. This rapid physiological change is ultimately accompanied by a matching anatomical loss of input from the deprived eye. This remodeling is thought to be initiated at the thalamocortical synapse. Ocular dominance plasticity after brief (24 hours) monocular deprivation was analyzed by intrinsic signal optical imaging and by targeted extracellular unit recordings. Deprived-eye responsiveness was lost in the extragranular Layers, whereas normal binocularity in layer IV was preserved. This finding supports the hypothesis that thalamocortical organization is guided by earlier changes at higher stages.
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