Control of movements and temporal discounting of reward.
Let us assume that the purpose of any movement is to position our body in a more rewarding state. People and other animals discount future reward as a function of time. Recent results suggest that there is a correlation between changes in this reward temporal discount function and changes in saccadic velocity and duration. These results suggest that each movement carries a cost because its duration delays acquisition of reward. The value that the brain assigns to the stimulus, and the rate at which it discounts this value in time, form a cost that appears to influence the motor commands that move our body.
Shadmehr
Reza
R
Department of Biomedical Engineering, Johns Hopkins School of Medicine, USA. shadmehr@jhu.edu
D000818:Animals; D002755:Choice Behavior / Q000502:physiology*; D005133:Eye Movements / Q000502:physiology; D006801:Humans; D009068:Movement / Q000502:physiology*; D011930:Reaction Time / Q000502:physiology*; D012201:Reward; D013997:Time Factors