Abstract
Hypersynchronous activity was recorded from the visual cortex of the rat in the form of photically evoked after-discharges following 0, 24, 48, and 72 hr. of food deprivation. After-discharge activity was affected at only the 48-hr. level of deprivation and only in terms of a decrease in the frequency of occurrence. All other measures—after-discharge burst duration, after-discharge spindle amplitudes, and spindle waves per after-discharge burst—were unaffected by conditions of food deprivation. These results are discussed in terms of evidence against the uniform role of behavioral inhibition in hypersynchronous brain activity.
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