The axon hillock is the point of impulse (AP) generation in this motor neuron, through both spatial and temporal summation of post-synaptic potentials -- excitatory (EPSP) and inhibitory (IPSP). Through the flow of current, the membrane potential of the axon hillock (resting: -70mV) is gradually driven up to threshold level of depolarisation (-40 mV), then … Continue reading The Synapse