810
edits
Changes
→Postsynaptic Mechanisms of Chemical Transmission
* As you can see, when the neuron is held at potentials negative to +20 mV, the resulting voltage change is depolarizing (in a positive direction), as the cell is pulled up to the +20 mV potential of the synapse.
* When the neuron is held exactly at 20 mV, there is no change in voltage. This make sense; the driving force (the difference between the membrane voltage and the reversal potential) has gone to zero, since they are equal, and so no current flows.
* When the neuron is held at potentials more positive than 20 mV, the result is a negative voltage deflection (hyper polarization), as the postsynaptic potential attempts to pull the membrane back down to the reversal potential.
