Pharmacological actions Electrophysiology 1. Block the initiation of abnormal discharge from the focal area 2. Prevent the spread of abnormal discharge to adjacent brain areas 正常脑细胞 异常高频放电 病灶9 1. Block the initiation of abnormal discharge from the focal area. 2. Prevent the spread of abnormal discharge to adjacent brain areas Pharmacological actions Electrophysiology