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GABA and Major Depressive Disorder (MDD)

What is the relationship between the gamma-aminobutyric acid (GABA) and glutamate neurotransmitters in the brain?

a. GABA is the primary excitatory and glutamate is the primary inhibitory neurotransmitter in the brain.

b. Neither GABA nor glutamate are predominantly active in the brain.

c. GABA is the primary inhibitory and glutamate is the primary excitatory neurotransmitter in the brain.

d. Alterations in GABA and/or glutamate levels do not significantly impact brain functioning.

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