cortex may underlie age-related degradation of visual function [AG Leventhal, Y. Wang, M.
Pu, Y. Zhou, Y. Ma, GABA and its agonists improved visual cortical function in senescent
monkeys, Science 300 (2003) 812–815; MT Schmolesky, Y. Wang, M. Pu, AG Leventhal,
Degradation of stimulus selectivity of visual cortical cells in senescent rhesus monkeys, Nat.
Neurosci. 3 (2000) 384–390]. To date, there is little direct evidence to support this …