ROGER HARRIS / SCIENCE PHOTO LIBRARY ROGER HARRIS / SCIENCE PHOTO LIBRARY
Thalamus in the brain. Computer artwork of a person's head showing the brain inside. The highlighted area (centre) shows the thalamus. The thalamus is situated on top of the brainstem and is the largest structure of the diencephalon - the part of the brain situated between the midbrain (mesencephalon) and forebrain (telencephalon). It plays an important role in relaying sensation, and motor signals to the cerebral cortex, and is involved in the regulation of consciousness, sleep and alertness.
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