Question

Increasing excitatory signals above threshold levels for neural activation will not affect the intensity of an action potential. this indicates that the reaction of a neuron is:

Answer 1

Answer: an all or none response

According to the all-or-none law, it a certain threshol is crossed by a stimulus' strenght, it will cause a response in the nerve cell or muscle fiber. However, the strenght of the response will always be the same and will not vary with different stimulus strengths. The only requirement is for the threshold to be crossed.