The epithalamus is a (dorsal) posterior segment of the diencephalon (a segment in the middle of the brain also containing the hypothalamus and the thalamus) which includes the habenula and their interconnecting fibers the habenular commissure, the stria medullaris and the pineal body.
The epithalamus is a (dorsal) posterior segment of the diencephalon (a segment in the middle of the brain). This brain is also containing the hypothalamus. This brain is also containing the thalamus. This diencephalon (a segment in the middle of the brain) includes the habenula. This diencephalon (a segment in the middle of the brain) includes their interconnecting fibers the habenular commissure, the stria medullaris and the pineal body. This brain is also containing the hypothalamus. This brain is also containing the thalamus.