Occurred . it was suggested that the two levels of plateau were based on the two zero current point in 样电流。当电压钳制在- 55mv时，出现的内向电流与
2.
Relationship of the background currents obtained with step and ramp voltage clamp showed a negative phase in outward part of the rectification under 5 . 0mmol lk 而在低钾灌流条件下，该曲线在- 55及- 25mv处分别形成跨越cross over ，即出现一个内向电流区。
3.
Distinct outward fpsc following the inward fpsc emerged in neurons ^ pll and was abolished by bicuculline ( 50 um ) . bicuculline increased the amplitude and duration of the initial inward fpsc in all age groups and characteristically recruited the polysynaptic second component of fepscs in neurons p11 - p21 . no spontaneous periodic inward current was detected in any age groups after blocking gabaa receptors 在生后11天以上的神经元，内向电流之后出现了明显的外向电流，此外向电流可被gaba受体阻断剂荷包牡丹碱（ 50pm ）完全阻断，同时iscs的初始内向电流的幅值和时程均明显增加，并且在阻断gaba受体之后，任一年龄组均未观察到自发性周期性的内向电流。
