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🧠ap psychology review

Serotonin Levels in AP Psychology

Verified for the 2027 exam
Verified for the 2027 exam•Fiveable Content Team

Definition

Serotonin levels refer to the amount of serotonin, a neurotransmitter, present in the brain. This neurotransmitter plays a crucial role in regulating mood, sleep, appetite, and other physiological functions.

This definition is part of Fiveable's AP Psychology review, which also has guided practice questions.

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