The thalamus is a large, dual lobed mass of grey matter that is buried under
the cerebral cortex. The thalamus is part of the brain responsible for signal
relaying and prioritization. It is involved in sensory perception and regulation
of motor functions. The thalamus is a limbic system structure and it connects
areas of the cerebral cortex that are involved in sensory perception and
movement, with other parts of the brain and spinal cord that also have a role
in sensation and movement. As a regulator of sensory information, the
thalamus also controls sleep and awake states of consciousness.