The Brain Knows How Strong a Stimulus Is Because the Brain

Multiple Choice

The brain knows how strong a stimulus is because the brain interprets ____.

A) the neurotransmitter levels the stimulus is producing
B) variations in the frequency of action potentials
C) the size variation in the action potential being propagated
D) the number of ion channels in the plasma membrane of the sensory neuron
E) the extent to which voltage gated ion channels open and close