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Suprachiasmatic Nucleus (SCN) in AP Psychology

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

Definition

The suprachiasmatic nucleus (SCN) is a tiny region in the brain located in the hypothalamus, directly above the optic chiasm. It controls circadian rhythms.

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

AP course connection

Topic 2.9: Sleep and Dreaming

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Unit 2

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