The neurotransmitter ________, which helps control the preciseness of the signal sent from one neuron to another, decreases with aging.
A) serotonin
B) dopamine
C) gamma-aminobutyric acid
D) noradrenaline

Question

Quizplus · Accepted Answer

Gamma-aminobutyric acid (GABA) is a neurotransmitter that helps control the preciseness of the signal sent from one neuron to another by inhibiting the firing of neurons. GABA decreases with aging, which can lead to age-related cognitive decline and disorders such as Alzheimer's disease. Serotonin, dopamine, and noradrenaline are other neurotransmitters that are involved in various brain functions, but they do not play a major role in controlling the preciseness of neuronal signaling.

The Neurotransmitter ________, Which Helps Control the Preciseness of the Signal