The third section of this book discusses what many people consider to be the current important question: What are the biochemical and molecular mechanisms of plasticity in the visual cortex? Although progress is being made in understanding mechanisms for LTP, progress regarding sensory-dependent plasticity in the visual cortex will inevitably be much slower, unless someone can show that the mechanisms are the same in the two cases, by some procedure that is less tedious than simply repeating everything done with LTP on sensory-dependent plasticity. In addition, there is some evidence of more than one type of LTP (dependent and not dependent on NMDA receptors), some evidence that LTP occurs where sensory-dependent plasticity does not, and some suggestions that there are anatomical changes in sensory-dependent plasticity that are not found with LTP.
KeywordsVisual Cortex Critical Period Primary Visual Cortex Ocular Dominance Direction Selectivity
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