1. Tending to excite or stimulate; causing excitement or increased activity
The excitatory neurotransmitter dopamine plays a crucial role in motivation.
O neurotransmissor excitatório dopamina desempenha um papel crucial na motivação.
2. In neuroscience, relating to a synapse or neurotransmitter that increases the likelihood of an action potential in the postsynaptic neuron
Glutamate is the primary excitatory neurotransmitter in the central nervous system.
O glutamato é o principal neurotransmissor excitatório do sistema nervoso central.
3. Causing or tending to cause stimulation or activation
The excitatory effect of caffeine on the nervous system is well-documented.
O efeito excitatório da cafeína no sistema nervoso é bem documentado.