Abstract: The experiments were carried out on awoke and immobilized rabbits. Following cerebral ischemia produced by stimulation of the superior cervi-cal sympathetic ganglion, the P Wave's amplitude of bilateral evoked cor-tical potentials was clearly reduced and EEG occurred clear abnormal changes. The results indicated that the amplitude of wave P and EEG seems to be susceptive to ischemia and may be used as monitory indicate of ce-rebral ischemia. The changes of cerebral function produced by stimutaling unilateral superior cerical sympathetic ganglion may be used as pattern of cerebral ischemia.

Key words: cerebral ischemia, superior cervieai sympathetic ganglion, evoked patentials, EEG