[Changes in the reactivity of visual cortex neurons after local photic stimulation of their receptive fields]

In experiments on unanesthetized relaxed cats the recovery cycles of neuron responses in the primary visual cortex were investigated by means of double local light stimulation of the receptive fields. In most cases the reactivity recovery was not monotonous. A more drastic recovery from depression produced by the first stimulus as well as a more complete primary restoration of activity were observed in neurons with central receptive fields than in those with peripheral receptive fields. Differences in synchronization of inhibitory and excitatory inputs to neurons responsible for central and peripheral vision are discussed.