Control of pinna movements and sensorimotor register in cat superior colliculus.

A topographical representation of pinna movements was found in the intermediate and deep laminae of the cat superior colliculus. This map of pinna movements was found to be in register with the eye movement map, and both movement maps shared the same axes. They, in turn, were in topographical register with the sensory topographies which have been previously described in the superior colliculus. Apparently, the many sensory and motor representations in the cat superior colliculus conform to a single topographical scheme. Presumably, this organization pattern is the simplest and most economical way to transduce multiple sensory cues into appropriate motor responses.