Electrifying Brains- Active Electrical spikes

The Hodgkin Huxley Experiments

1. Achivement:

The All or None Spike and the Voltage Clamp

1. 
2. What are the membrane currents underlying the spike?注：钳住电压，分析该电压下膜电流的情况

Membrane Currents Underlying the Spike

1. 
2. Modeling the Membrane Currents:注：n

The H&H Spike Model

1. K current:注：当a越大，β越小，越靠近open。
2. Na current:
3. Voltage-dependent Ion channels:
4. 注：随着刺激的增强，spike出现提前
5. 不应期：两个spike之间间隔着10msec，不应期间不能得到另一个spike注：The refractory period is caused by close-to-zero values of h.