Which of the following can act as both excitatory and inhibitory neurotransmitter?
The dopamine is believed to act as an inhibitory transmitter in the basal ganglia, but in some other areas of the brain, it is possibly excitatory. It also functions as a stabilizer under some conditions.Ref: Guyton; 13th edition; Chapter 57 Contributions of the Cerebellum and Basal Ganglia to Overall Motor Control
Acetylcholine
Glutamate
Norepinephrine
Dopamine
General physiology