Diencephalon or interbrain is situated between the telencephalon and the embryonic mesencephalon (midbrain). It consists of the thalamus, subthalamus, epithalamus and hypothalamus.
The four main components of the Diencephalon are:
Epithalamus – The epithalamus is the diencephalon's posterior (dorsal) section. Melatonin secretion and hormone secretion from the pituitary gland are two functions of its components.
Hypothalamus – Body temperature, appetite, crucial parts of motherhood and attachment behaviours, thirst, tiredness, sleep, and circadian rhythms are all controlled by the hypothalamus.
Subthalamus – It is the main link between the midbrain and the diencephalon.The subthalamus is an essential component of the basal ganglia's functionality, which is the main processing centre for movement, emotion, and cognitive nerve signals.
Thalamus – The thalamus is most commonly thought to serve as a transfer point or hub, transferring information between various subcortical areas and the cerebral cortex.