GLUTAMATE By Nugent, Pam M.S. - May 11, 2013 The salt or ester of amino acid glutamic acid serving as the predominant excitatory neurotransmitter in the brain. Glutamate plays a critical role in cognitive, motor, and sensory functions. GLUTAMATE: "Glutamate binds to neuron receptors." Related Psychology Terms ASPARTATE SALTY GAMMA-AMINOBUTYRIC ACID (GABA) GLUTAMATE HYPOTHESIS GLUTAMIC ACID DECARBOXYLASE GLUTAMATE RECEPTOR ISONIAZID DOPAMINE (DA) CAUDATE NUCLEUS GLYCINE Cite this page: Nugent, Pam M.S., "GLUTAMATE," in PsychologyDictionary.org, May 11, 2013, https://psychologydictionary.org/glutamate/ (accessed January 20, 2019).