🧠ap psychology review

GABA

Written by the Fiveable Content Team • Last updated August 2025
Verified for the 2026 exam
Verified for the 2026 examWritten by the Fiveable Content Team • Last updated August 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.

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