Diencephalon

Division of the forebrain around the third ventricle

In the human brain, the diencephalon is a division of the forebrain. It is situated between the telencephalon and the midbrain. The diencephalon has also been known as the tweenbrain in older literature. It consists of structures that are on either side of the third ventricle, including the thalamus, the hypothalamus, the epithalamus and the subthalamus.

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