Question

question 1
1 pts
how does the central nervous system recognize how important a particular stimulus is?
○ by the frequency at which the action potentials are created by the stimulus
○ by the overall strength of the action potential produced by the stimulus
○ by the number of neurotransmitters that reach the brain through the circulatory system
○ by the amount of hormone that the stimulus releases from endocrine glands

Explanation:

Action potentials follow the all-or-none law—their strength is constant. The CNS encodes stimulus importance via action potential frequency (higher frequency = more important stimulus). Neurotransmitters act at synapses, not via circulation; hormones are endocrine, not neural signaling for stimulus recognition.

Answer:

A. by the frequency at which the action potentials are created by the stimulus