Identify the Point in Time During an Action Potential When

Multiple Choice

Identify the point in time during an action potential when a positive feedback process is occurring in a neuron.

A) when the neuron is at rest
B) as the neuron is being depolarized and passes the threshold potential
C) after the peak depolarization of the action potential when it is rapidly repolarizing
D) during the undershoot phase when the neuron is slightly hyperpolarized relative to the resting potential
E) A positive feedback process is occurring at all the time points given.