Assertion: brain's neurotransmitter | /r/CapableOf | exert excitatory effects
Facets:
value: on target neurons
type: TRANSITIVE-OBJECT
value: almost always
type: TEMPORAL
Source sentences:
text: The two neurotransmitters that are used most widely in the vertebrate brain are glutamate, which almost always exerts excitatory effects on target neurons, and gamma-aminobutyric acid (GABA), which is almost always inhibitory.