The successive impulses of afferent neurons combining additively in a postsynaptic neuron to produce a graded potential that may cause the neuron to transmit a nerve impulse or action potential that could not be produced by a single afferent impulse. See also graded potential. Compare spatial summation. [From Latin temporalis of or relating to time, from tempus time + -alis of or relating to]
Subjects: Sports and Exercise Medicine — Psychology.