Methods\ The evoked electromyography of 32 trapezius of 16 SD rats was examined in different time and results obtained were processed by statistical methods.

• 方法采用电生理方法,测定切断副神经后的不同时期,刺激颈神经丛深支在大鼠斜方肌得到的肌电大小,并作统计学分析。