🧠ap psychology review

GABA (Gamma-Aminobutyric Acid)

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 is a neurotransmitter in the central nervous system that inhibits or slows down brain signals and activity.

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