<prompt> The mu rhythm on EEG arises from?Primary visual areaPrimary auditory areaPrimary sensorimotor areaPrimary olfactory area  <response>: muu rhythm 7 - 11 Hz normal waves. Seen during wakefulness and drowsiness. Arises from the Rolandic coex primary sensorimotor coex at rest. It can be unilateral, asynchronous and asymmetric. 