Methods: Following the international 10/20 system electrode arranging and special electrode arrangement methods to test, In addition, the bemegride induced test and EEG tests repeat were also used.

• 方法：采用日本光电公司产7310型脑电图机，按国际10/20系统电极放置法和特殊电极放置，并加用美解眠诱发及反复多次检查。