dendritic spine

…provided by specialized structures called dendritic spines, which, by providing discrete regions for the reception of nerve impulses, isolate changes in electrical current from the main dendritic trunk.

…the putamen terminate upon the dendritic spines of spiny striatal neurons, and all output is via axons of the same neurons. Chemically, spiny striatal neurons are heterogeneous; that is, most contain more than one neurotransmitter. Gamma-aminobutyric acid (GABA) is the primary neurotransmitter contained in spiny striatal neurons. Other neurotransmitters found…