![]() Furthermore, in the awake monkey, our results suggest that the synaptic strength had been completely reorganized including connections between dissimilar elements of the functional architecture. We found that spontaneous activity resembling orientation-maps in awake animals spans smaller cortical areas in each instance, but over time it appears across all of V1. Under both anesthetized and awake conditions, spontaneous correlated-activity coincided with traveling waves. Nevertheless, spontaneous correlated-activity involving orientation-domains was observed in awake monkeys. Spontaneously emerging orientation and ocular-dominance maps, spanning up to 6 x 6 mm(2), were readily observed in anesthetized but not in awake monkeys. ![]() We explored these questions by combining voltage-sensitive-dye imaging with multiunit and local-field-potential recordings. However, it remains unknown 1) whether spontaneous-activity in the primate also displays similar patterns and 2) whether a significant difference exists between cortical ongoing-activity in the anesthetized and awake primate. ![]() Previously we have shown that spontaneous patterns resembling orientation-maps appear over large cortical areas in the primary visual-cortex of anesthetized cats. Ongoing internal cortical activity plays a major role in perception and behavior both in animals and humans.
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