Diencephalon

A major division of the forebrain, situated between the cerebral hemispheres and the midbrain, comprising the thalamus, hypothalamus, epithalamus, and subthalamus.

Key Functions:

• Relays sensory information (via thalamus).
• Regulates autonomic functions, hormones, and essential drives (via hypothalamus).
• Involved in sleep-wake cycles and limbic functions (via epithalamus).
• Contributes to motor control (via subthalamus).

Interacting Systems & Components:

• Thalamus (major component)
• Hypothalamus (major component)
• Epithalamus (component, includes pineal gland and habenular nuclei)
• Subthalamus (component)
• Cerebral Cortex (receives and sends projections to)
• Brainstem (inferior to)