Question

Sub-threshold stimuli can never evoke an action potential. a. True b. False

Answer 1

Sub-threshold stimuli can indeed evoke an action potential through temporal or spatial summation.

Step-by-step explanation:

False. Sub-threshold stimuli can indeed evoke an action potential. While the strength of the stimulus may not be strong enough to reach the threshold level required for an action potential on its own, multiple stimuli can summate to reach the threshold level and trigger an action potential. This phenomenon is known as temporal or spatial summation.