 The background activity consists of a 8 Hz to 9 Hz rhythm arising in the posterior head region. This rhythm is also accompanied by some beta activity which occurs infrequently. There are also muscle contractions occurring at 4 Hz to 5 Hz which suggests possible Parkinson's. Part of the EEG is obscured by the muscle contraction artifact. There are also left temporal sharps occurring infrequently during the tracing. At one point of time, there was some slowing occurring in the right frontal head region.