Learning to stand with unexpected sensorimotor delays
Human standing balance relies on self-motion estimates that are used by the nervous system to detect unexpected movements and enable corrective responses and adaptations in control. These estimates must accommodate for inherent delays in sensory and motor pathways. Here, we used a robotic system to...
| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
eLife Sciences Publications Ltd
2021-08-01
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| Series: | eLife |
| Subjects: | |
| Online Access: | https://elifesciences.org/articles/65085 |
| _version_ | 1828375577201999872 |
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| author | Brandon G Rasman Patrick A Forbes Ryan M Peters Oscar Ortiz Ian Franks J Timothy Inglis Romeo Chua Jean-Sébastien Blouin |
| author_facet | Brandon G Rasman Patrick A Forbes Ryan M Peters Oscar Ortiz Ian Franks J Timothy Inglis Romeo Chua Jean-Sébastien Blouin |
| author_sort | Brandon G Rasman |
| collection | DOAJ |
| description | Human standing balance relies on self-motion estimates that are used by the nervous system to detect unexpected movements and enable corrective responses and adaptations in control. These estimates must accommodate for inherent delays in sensory and motor pathways. Here, we used a robotic system to simulate human standing about the ankles in the anteroposterior direction and impose sensorimotor delays into the control of balance. Imposed delays destabilized standing, but through training, participants adapted and re-learned to balance with the delays. Before training, imposed delays attenuated vestibular contributions to balance and triggered perceptions of unexpected standing motion, suggesting increased uncertainty in the internal self-motion estimates. After training, vestibular contributions partially returned to baseline levels and larger delays were needed to evoke perceptions of unexpected standing motion. Through learning, the nervous system accommodates balance sensorimotor delays by causally linking whole-body sensory feedback (initially interpreted as imposed motion) to self-generated balance motor commands. |
| first_indexed | 2024-04-14T07:48:27Z |
| format | Article |
| id | doaj.art-e87ae73a3b0a49598fd891b5ef446561 |
| institution | Directory Open Access Journal |
| issn | 2050-084X |
| language | English |
| last_indexed | 2024-04-14T07:48:27Z |
| publishDate | 2021-08-01 |
| publisher | eLife Sciences Publications Ltd |
| record_format | Article |
| series | eLife |
| spelling | doaj.art-e87ae73a3b0a49598fd891b5ef4465612022-12-22T02:05:16ZengeLife Sciences Publications LtdeLife2050-084X2021-08-011010.7554/eLife.65085Learning to stand with unexpected sensorimotor delaysBrandon G Rasman0https://orcid.org/0000-0002-8031-8320Patrick A Forbes1https://orcid.org/0000-0002-0230-9971Ryan M Peters2Oscar Ortiz3Ian Franks4J Timothy Inglis5Romeo Chua6Jean-Sébastien Blouin7https://orcid.org/0000-0003-0046-4051School of Physical Education, Sport, and Exercise Sciences, University of Otago, Dunedin, New Zealand; Department of Neuroscience, Erasmus MC, University Medical Center Rotterdam, Rotterdam, Netherlands; School of Kinesiology, University of British Columbia, Vancouver, CanadaDepartment of Neuroscience, Erasmus MC, University Medical Center Rotterdam, Rotterdam, NetherlandsSchool of Kinesiology, University of British Columbia, Vancouver, Canada; Faculty of Kinesiology, University of Calgary, Calgary, Canada; Hotchkiss Brain Institute, Calgary, CanadaSchool of Kinesiology, University of British Columbia, Vancouver, Canada; Faculty of Kinesiology, University of New Brunswick, Fredericton, CanadaSchool of Kinesiology, University of British Columbia, Vancouver, CanadaSchool of Kinesiology, University of British Columbia, Vancouver, Canada; Djavad Mowafaghian Centre for Brain Health, University of British Columbia, Vancouver, CanadaSchool of Kinesiology, University of British Columbia, Vancouver, CanadaSchool of Kinesiology, University of British Columbia, Vancouver, Canada; Djavad Mowafaghian Centre for Brain Health, University of British Columbia, Vancouver, Canada; Institute for Computing, Information and Cognitive Systems, University of British Columbia, Vancouver, CanadaHuman standing balance relies on self-motion estimates that are used by the nervous system to detect unexpected movements and enable corrective responses and adaptations in control. These estimates must accommodate for inherent delays in sensory and motor pathways. Here, we used a robotic system to simulate human standing about the ankles in the anteroposterior direction and impose sensorimotor delays into the control of balance. Imposed delays destabilized standing, but through training, participants adapted and re-learned to balance with the delays. Before training, imposed delays attenuated vestibular contributions to balance and triggered perceptions of unexpected standing motion, suggesting increased uncertainty in the internal self-motion estimates. After training, vestibular contributions partially returned to baseline levels and larger delays were needed to evoke perceptions of unexpected standing motion. Through learning, the nervous system accommodates balance sensorimotor delays by causally linking whole-body sensory feedback (initially interpreted as imposed motion) to self-generated balance motor commands.https://elifesciences.org/articles/65085sensorimotor delaysensorimotor adaptationstanding balance controlvestibularmotion perceptionposture |
| spellingShingle | Brandon G Rasman Patrick A Forbes Ryan M Peters Oscar Ortiz Ian Franks J Timothy Inglis Romeo Chua Jean-Sébastien Blouin Learning to stand with unexpected sensorimotor delays eLife sensorimotor delay sensorimotor adaptation standing balance control vestibular motion perception posture |
| title | Learning to stand with unexpected sensorimotor delays |
| title_full | Learning to stand with unexpected sensorimotor delays |
| title_fullStr | Learning to stand with unexpected sensorimotor delays |
| title_full_unstemmed | Learning to stand with unexpected sensorimotor delays |
| title_short | Learning to stand with unexpected sensorimotor delays |
| title_sort | learning to stand with unexpected sensorimotor delays |
| topic | sensorimotor delay sensorimotor adaptation standing balance control vestibular motion perception posture |
| url | https://elifesciences.org/articles/65085 |
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