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