A kind of negative correlation between EPSPs and PSs of the evoked field responses in the dentate gyrus of quiet rest rats was studied.That is, while EPSP declined, PS increased.

• 考察大鼠静卧状态下 ,相同强度刺激信号作用于前穿质通道时 ,海马齿状回颗粒细胞诱发场电位的兴奋性突触后电位EPSP和群峰电位PS之间的一种负相关变化关系 ,即EPSP斜率减小时 ,PS幅值增加。