Optimal compensation for temporal uncertainty in movement planning

Research output: Contribution to journalArticle

Abstract

Motor control requires the generation of a precise temporal sequence of control signals sent to the skeletal musculature. We describe an experiment that, for good performance, requires human subjects to plan movements taking into account uncertainty in their movement duration and the increase in that uncertainty with increasing movement duration. We do this by rewarding movements performed within a specified time window, and penalizing slower movements in some conditions and faster movements in others. Our results indicate that subjects compensated for their natural duration-dependent temporal uncertainty as well as an overall increase in temporal uncertainty that was imposed experimentally. Their compensation for temporal uncertainty, both the natural duration-dependent and imposed overall components, was nearly optimal in the sense of maximizing expected gain in the task. The motor system is able to model its temporal uncertainty and compensate for that uncertainty so as to optimize the consequences of movement.

Original languageEnglish (US)
Article numbere1000130
JournalPLoS Computational Biology
Volume4
Issue number7
DOIs
StatePublished - Jul 2008

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Uncertainty
uncertainty
planning
Planning
duration
Motor Control
Dependent
Signal Control
Time Windows
Protein Sorting Signals
Movement
Compensation and Redress
Optimise
Experiment
experiment
Experiments

ASJC Scopus subject areas

  • Cellular and Molecular Neuroscience
  • Ecology
  • Molecular Biology
  • Genetics
  • Ecology, Evolution, Behavior and Systematics
  • Modeling and Simulation
  • Computational Theory and Mathematics

Cite this

Optimal compensation for temporal uncertainty in movement planning. / Hudson, Todd E.; Maloney, Laurence T.; Landy, Michael S.

In: PLoS Computational Biology, Vol. 4, No. 7, e1000130, 07.2008.

Research output: Contribution to journalArticle

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