Overview of In Vivo Cortical Oscillations
brain oscillations occur spontaneously, for example during sleep; as part of evoked responses following specific sensory stimulations; and as a correlate of cognitive and motor processes. In the latter cases, there is evidence that the oscillations are an essential part of the brain computations being performed, motivating study of the basic cellular mechanisms. Cognitively relevant oscillations are often quite fast, above 20 Hz, and even up to several hundred Hz.
Keywords: sleep, sensory stimulation, cognitive task, evoked responses, fast rhythms
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