Energy exchanges at contact events guide sensorimotor integration
The brain must consider the arm’s inertia to predict the arm's movements elicited by commands impressed upon the muscles. Here, we present evidence suggesting that the integration of sensory information leading to the representation of the arm's inertia does not take place continuously in...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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eLife Sciences Publications Ltd
2018-05-01
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| Series: | eLife |
| Subjects: | |
| Online Access: | https://elifesciences.org/articles/32587 |
| _version_ | 1811235954313134080 |
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| author | Ali Farshchian Alessandra Sciutti Assaf Pressman Ilana Nisky Ferdinando A Mussa-Ivaldi |
| author_facet | Ali Farshchian Alessandra Sciutti Assaf Pressman Ilana Nisky Ferdinando A Mussa-Ivaldi |
| author_sort | Ali Farshchian |
| collection | DOAJ |
| description | The brain must consider the arm’s inertia to predict the arm's movements elicited by commands impressed upon the muscles. Here, we present evidence suggesting that the integration of sensory information leading to the representation of the arm's inertia does not take place continuously in time but only at discrete transient events, in which kinetic energy is exchanged between the arm and the environment. We used a visuomotor delay to induce cross-modal variations in state feedback and uncovered that the difference between visual and proprioceptive velocity estimations at isolated collision events was compensated by a change in the representation of arm inertia. The compensation maintained an invariant estimate across modalities of the expected energy exchange with the environment. This invariance captures different types of dysmetria observed across individuals following prolonged exposure to a fixed intermodal temporal perturbation and provides a new interpretation for cerebellar ataxia. |
| first_indexed | 2024-04-12T12:00:58Z |
| format | Article |
| id | doaj.art-13e4894394864fff9b184be6f6b757fa |
| institution | Directory Open Access Journal |
| issn | 2050-084X |
| language | English |
| last_indexed | 2024-04-12T12:00:58Z |
| publishDate | 2018-05-01 |
| publisher | eLife Sciences Publications Ltd |
| record_format | Article |
| series | eLife |
| spelling | doaj.art-13e4894394864fff9b184be6f6b757fa2022-12-22T03:33:51ZengeLife Sciences Publications LtdeLife2050-084X2018-05-01710.7554/eLife.32587Energy exchanges at contact events guide sensorimotor integrationAli Farshchian0https://orcid.org/0000-0001-9321-0944Alessandra Sciutti1https://orcid.org/0000-0002-1056-3398Assaf Pressman2Ilana Nisky3https://orcid.org/0000-0003-4128-9771Ferdinando A Mussa-Ivaldi4https://orcid.org/0000-0001-5343-7052Department of Biomedical Engineering, Northwestern University, Evanston, United States; Sensory Motor Performance Program, Rehabilitation Institute of Chicago, Chicago, United StatesSensory Motor Performance Program, Rehabilitation Institute of Chicago, Chicago, United States; Department of Robotics, Brain and Cognitive Sciences, Italian Institute of Technology, Genoa, ItalyDepartment of Biomedical Engineering, Ben-Gurion University of the Negev, Beersheba, IsraelDepartment of Biomedical Engineering, Ben-Gurion University of the Negev, Beersheba, Israel; Zlotowski Center for Neuroscience, Ben-Gurion University of the Negev, Beersheba, IsraelDepartment of Biomedical Engineering, Northwestern University, Evanston, United States; Sensory Motor Performance Program, Rehabilitation Institute of Chicago, Chicago, United States; Department of Physical Medicine and Rehabilitation, Northwestern University, Chicago, United States; Department of Physiology, Northwestern University, Chicago, United StatesThe brain must consider the arm’s inertia to predict the arm's movements elicited by commands impressed upon the muscles. Here, we present evidence suggesting that the integration of sensory information leading to the representation of the arm's inertia does not take place continuously in time but only at discrete transient events, in which kinetic energy is exchanged between the arm and the environment. We used a visuomotor delay to induce cross-modal variations in state feedback and uncovered that the difference between visual and proprioceptive velocity estimations at isolated collision events was compensated by a change in the representation of arm inertia. The compensation maintained an invariant estimate across modalities of the expected energy exchange with the environment. This invariance captures different types of dysmetria observed across individuals following prolonged exposure to a fixed intermodal temporal perturbation and provides a new interpretation for cerebellar ataxia.https://elifesciences.org/articles/32587sensory integrationmotor controlkinetic energy |
| spellingShingle | Ali Farshchian Alessandra Sciutti Assaf Pressman Ilana Nisky Ferdinando A Mussa-Ivaldi Energy exchanges at contact events guide sensorimotor integration eLife sensory integration motor control kinetic energy |
| title | Energy exchanges at contact events guide sensorimotor integration |
| title_full | Energy exchanges at contact events guide sensorimotor integration |
| title_fullStr | Energy exchanges at contact events guide sensorimotor integration |
| title_full_unstemmed | Energy exchanges at contact events guide sensorimotor integration |
| title_short | Energy exchanges at contact events guide sensorimotor integration |
| title_sort | energy exchanges at contact events guide sensorimotor integration |
| topic | sensory integration motor control kinetic energy |
| url | https://elifesciences.org/articles/32587 |
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