Regarding its role as a neurotransmitter in the CNS, norepinephrine
A) is secreted by brainstem neurons in response to sensory stimulation.
B) amplifies weak sensory signals and dampens strong ones so that more information can reach conscious levels.
C) is important for maintaining directed attention.
D) both "is secreted by brainstem neurons in response to sensory stimulation" and "is important for maintaining directed attention" are correct.
E) All of the choices are correct.

Question

Quizplus · Accepted Answer

Both choice A and choice C are correct. Norepinephrine is secreted by brainstem neurons in response to sensory stimulation and is important for maintaining directed attention. Choice B is incorrect as it describes the role of norepinephrine in the peripheral nervous system, not the central nervous system.

Regarding Its Role as a Neurotransmitter in the CNS, Norepinephrine