thalamus By Ivan Suarez Robles 17 Nov, 2010 A collection of nerve cells in the brain. Although it performs many functions, the primary role of the thalamus is to relay sensory information from other parts of the brain to the cerebral cortex.Related Articles: Help4HD Second Annual SymposiumUncle Jacob has HD: Neurobiology and Neurochemistry of HD for KidsThe HOPES Brain Tutorial (Text Version)The Motor Symptoms of Huntington's DiseaseDementia in Huntington's Disease