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Biological Learning and ControlHow the Brain Builds Representations, Predicts Events, and Makes Decisions$
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Reza Shadmehr and Sandro Mussa-Ivaldi

Print publication date: 2012

Print ISBN-13: 9780262016964

Published to MIT Press Scholarship Online: August 2013

DOI: 10.7551/mitpress/9780262016964.001.0001

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Cost of Time in Motor Control

Cost of Time in Motor Control

Chapter:
(p.307) 11 Cost of Time in Motor Control
Source:
Biological Learning and Control
Author(s):

Reza Shadmehr

Sandro Mussa-Ivaldi

Publisher:
The MIT Press
DOI:10.7551/mitpress/9780262016964.003.0012

This chapter is concerned with the cost of time in motor control. It concentrates on a theory that assumes that the purpose of movements is to attain a rewarding state at a minimum effort. It describes a very simply model of the human eye plant, and then observes a set of motor commands that bring the eyes to the target while minimizing a cost. This chapter shows that the motor commands that move the eyes reflect a specific cost of time, one in which passage of time discounts reward. It suggests that the motor commands that move the body may be a reflection of an economic decision regarding reward and effort.

Keywords:   cost of time, motor control, human eye plant, motor commands, discounts reward

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