Neural Control And Coordination Question 2

Question: The neural phenomenon depicted by the given diagram is best described as:

Options:

A) Spatial summation

B) Temporal summation

C) Presynaptic excitation

D) Presynaptic inhibition

Show Answer

Answer:

Correct Answer: A

Solution:

[a] The diagram shows that three different stimuli arrive at the same time and evoke a large EPSP that leads to an action potential, while less than three do not.

This is spatial summation.

Temporal summation involves the same stimulus arriving in rapid succession