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)is completely absent from the CNS,it is only used in the PNS.
E)is only important for processing visual stimuli.

Question

Quizplus · Accepted Answer

Norepinephrine is secreted by brainstem neurons in response to sensory stimulation (A) and is important for maintaining directed attention (C).

Regarding Its Role as a Neurotransmitter in the CNS,norepinephrine