Since all action potentials are identical, the intensity of a sensation depends on:
a. whether a myelinated or unmyelinated neuron has been stimulated
b. the duration of the stimulation
c. whether the neuron stimulated is a pre- or postsynaptic neuron
d. the total number of neurons stimulated and the frequency of their discharge
e. the presence of an EPSP or IPSP, which allows for a graded response