Before revision: Human sensorimotor control exhibits remarkable speed and accuracy, as celebrated in Fitts' law for reaching . Much less studied is how this is possible despite being implemented by neurons and muscle components with severe speed-accuracy tradeoffs (SATs). Here we develop a theory that connects the SATs at the system and hardware levels, and use it to explain Fitts' law for reaching and related laws.
After revision: Human sensorimotor control exhibits remarkable speed and accuracy, as celebrated in Fitts' Law for reaching and pointing. While Fitts related this to Shannon's channel capacity theorem, despite widespread study of Fitts' Law, a theory that connects the SATs at the system and hardware levels, and use it to explain Fitts' law for reaching and related laws.