Realizations Inc

Some neurons fire in response to simultaneously occurring sights and sounds, sounds and touches, sight and touches, and so on. These multi-sensory neurons are found throughout the cortex and in the superior colliculus (midbrain region densely packed with multisensory neurons).

(Macknik, Stephen L. PhD and Susana Martinez-Conde PhD. Sleights of Mind. P 116-120. NY:Henry Holt and Company, 2010.)