Optimal compensation for temporal uncertainty in movement planning.
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 tha...
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| Format: | Article |
| Language: | English |
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Public Library of Science (PLoS)
2008-07-01
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| Series: | PLoS Computational Biology |
| Online Access: | https://journals.plos.org/ploscompbiol/article/file?id=10.1371/journal.pcbi.1000130&type=printable |
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| _version_ | 1850240217493012480 |
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| author | Todd E Hudson Laurence T Maloney Michael S Landy |
| author_facet | Todd E Hudson Laurence T Maloney Michael S Landy |
| author_sort | Todd E Hudson |
| collection | DOAJ |
| description | 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. |
| format | Article |
| id | doaj-art-5d241dd30cd0470586b94a4f58cfb27a |
| institution | OA Journals |
| issn | 1553-734X 1553-7358 |
| language | English |
| publishDate | 2008-07-01 |
| publisher | Public Library of Science (PLoS) |
| record_format | Article |
| series | PLoS Computational Biology |
| spelling | doaj-art-5d241dd30cd0470586b94a4f58cfb27a2025-08-20T02:00:55ZengPublic Library of Science (PLoS)PLoS Computational Biology1553-734X1553-73582008-07-0147e100013010.1371/journal.pcbi.1000130Optimal compensation for temporal uncertainty in movement planning.Todd E HudsonLaurence T MaloneyMichael S LandyMotor 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.https://journals.plos.org/ploscompbiol/article/file?id=10.1371/journal.pcbi.1000130&type=printable |
| spellingShingle | Todd E Hudson Laurence T Maloney Michael S Landy Optimal compensation for temporal uncertainty in movement planning. PLoS Computational Biology |
| title | Optimal compensation for temporal uncertainty in movement planning. |
| title_full | Optimal compensation for temporal uncertainty in movement planning. |
| title_fullStr | Optimal compensation for temporal uncertainty in movement planning. |
| title_full_unstemmed | Optimal compensation for temporal uncertainty in movement planning. |
| title_short | Optimal compensation for temporal uncertainty in movement planning. |
| title_sort | optimal compensation for temporal uncertainty in movement planning |
| url | https://journals.plos.org/ploscompbiol/article/file?id=10.1371/journal.pcbi.1000130&type=printable |
| work_keys_str_mv | AT toddehudson optimalcompensationfortemporaluncertaintyinmovementplanning AT laurencetmaloney optimalcompensationfortemporaluncertaintyinmovementplanning AT michaelslandy optimalcompensationfortemporaluncertaintyinmovementplanning |