Fig. 1 |. Hitting the perfect shot.

a,b, To win the point, a tennis player must choose the right shot from their repertoire (a, down-the-line pass or drop shot) and coordinate multiple joint forces (b, shoulder, elbow and wrist) to perform the chosen action correctly. Neurons in the inferior olive provide reward and error-related information that could be used to teach the cerebellum how to improve both action selection (a) and action execution (b).