The Cell as a RC Circuit
- Background:
注:I是输入的电流,V是神经元膜相应的内外电压的变化情况(其变化与时间有关),这一变化就叫去极化
- RC circuit:
注:R(resistance)C(capacitance)
The Voltage Equation for the Passive Cell
- The Equation:


- The Membrane Time Constant:



注:R:The input resistence of the cell
Temporal Summation

The Resting Potential
注:在人脑内,electrode相当于synapses(输入电流)
The Synaptic Potential
- 为什么synapse是一个electical device?
注:当神经递质与突触后神经元上的受体结合时,一些离子通道打开,产生current。
- The Synaptic Conductance(突触电导)
- Channels:
注:1. x channels总是打开,是passive channels; 2. the red channels:当神经递质与受体相互作用时才打开
The Synaptic Battery
- gNa:

- gK:

- PSP:


The voltage Equation of the synapse and EPSP and IPSP


- EPSP:

- IPSP:
