What part of the brain includes thalamus hypothalamus and epithalamus?

The part of the brain that includes the thalamus, hypothalamus, and epithalamus is called the diencephalon. The diencephalon is one of the five major divisions of the brain and is located at its center. It is situated between the cerebrum and the brainstem. The thalamus is a large mass of gray matter that serves as a relay center for sensory and motor signals. It also plays a role in consciousness, sleep, and memory. The hypothalamus is a small structure located below the thalamus and is responsible for regulating many of the body's functions, including temperature, hunger, thirst, sleep, and reproduction. The epithalamus is a small region located above the thalamus and is involved in the production of cerebrospinal fluid.