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GABA

Written by the Fiveable Content Team โ€ข Last updated September 2025
Verified for the 2026 exam
Verified for the 2026 examโ€ขWritten by the Fiveable Content Team โ€ข Last updated September 2025

Definition

GABA, or gamma-aminobutyric acid, is an inhibitory neurotransmitter in the brain. It reduces neural activity and helps to regulate anxiety and stress levels.

GABA Definition - AP Psychology Key Term | Fiveable