Topic: 70-150 Hz

Ripples (strong, short-lived oscillations in the local field potential associated with memory consolidation) have been previously reported in several brain areas including the hippocampus and neocortex. Compared to hippocampal ripples, relatively little is known about cortical ripples in terms of their spread and function. We inspected the ripple activity in the frequency range of 70-150 Hz in V1 and V4 of two macaque monkeys implanted with 16 Utah electrode arrays each [1]. The activity was recorded during resting state with occasional periods of drowsing. We observed prominent events with hi