Hippocampal circuits perform some unique operation on this input. Hippocampal circuits then readdress the neocortex about the outcome of this operation. This pattern is referred to as theta-modulated gamma structure. While, the principle function of gamma is still theoretical, it is quite clear that these patterns uniquely determine the timing of neuronal discharge in relation to thousands of adjacent neurons . Within a few seconds of sitting still, eating or drinking, an alternate pattern determines the discharge of most HF neurons.
Several findings lend support to the role of ripples in memory consolidation.
Thus, during ripples there is a concurrent activation of neurons in structures known to play a role in memory. Thus, the pattern of neuronal activity during each 200 Hz ripple is influenced by recent sensory experience.