Multiple dynamic representations in the motor cortex during sensorimotor learning
Open accessAbstract
The mechanisms linking sensation and action during learning are poorly understood. Layer 2/3 neurons in the motor cortex might participate in sensorimotor integration and learning; they receive input from sensory cortex and excite deep layer neurons, which control movement. Here we imaged activity in the same set of layer 2/3 neurons in the motor cortex over weeks, while mice learned to detect objects with their whiskers and report detection with licking. Spatially intermingled neurons represented sensory (touch) and motor behaviours (whisker movements and licking). With learning, the population-level representation of task-related licking strengthened. In trained mice, population-level representations were redundant and stable, despite dynamism of single-neuron representations. The activity of a subpopulation of neurons was consistent with touch driving licking behaviour. Our results suggest that ensembles of motor cortex neurons couple sensory input to multiple, related motor programs during learning.
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The activity of M1 cortical neurons dynamically changes during motor learning.
“We focused on the primary motor cortex (M1), as the proliferation and differentiation of M1 OPCs is accelerated, and the activity of M1 cortical neurons dynamically changes during motor learning (Huber et al., 2012 ; Masamizu et al., 2014 ; McKenzie et al., 2014 ; Peters, Chen, & Komiyama, 2014 ; Xiao et al., 2016 ).”
From Motor learning requires myelination to reduce asynchrony and spontaneity in neural activity (2020) · cites this paper as Huber et al., 2012
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Background
- Authors
- Huber, D., Gutnisky, D. A., Peron, S., O’Connor, D. H., Wiegert, J. S., Tian, L., Oertner, T. G., Looger, L. L., & Svoboda, K.
- Affiliations
- University of Geneva (CH)
- Howard Hughes Medical Institute (US)
- University Medical Center Hamburg-Eppendorf (DE)
- Corresponding author
- Svoboda, K.
- ORCID
- Venue
- Nature
- Published
- 2012-04
- Volume
- 484
- Issue
- 7395
- Pages
- 473-478
- ISSN
- 0028-0836 (ISSN-L)
- 1476-4687
- PMC
- PMC4601999
- OpenAlex
- W2094933391
- Cited by
- 540
- References
- 6
- Citations by year
- 2026: 12 · 2025: 23 · 2024: 35 · 2023: 36 · 2022: 34 · 2021: 24 · 2020: 45 · 2019: 69 · 2018: 42 · 2017: 44 · 2016: 41 · 2015: 34 · 2014: 37 · 2013: 47 · 2012: 17
- FWCI
- 22.13
- Type
- journal article
- Language
- en
- Open access
- green
- www.ncbi.nlm.nih.gov
- Locations
- Nature (publishedVersion)
- PubMed (publishedVersion)
- Archive ouverte UNIGE (University of Geneva) (publishedVersion)
- Europe PMC (PubMed Central) (acceptedVersion)
- PubMed Central (acceptedVersion)
- RePEc: Research Papers in Economics (submittedVersion)
- Archive ouverte UNIGE (University of Geneva) (submittedVersion, cc-by)
- Funders
- Howard Hughes Medical Institute
- Topics
- Life Sciences › Neuroscience › Cognitive Neuroscience › Motor Control and Adaptation
- Life Sciences › Neuroscience › Cognitive Neuroscience › Neural dynamics and brain function
- Life Sciences › Neuroscience › Cognitive Neuroscience › Memory and Neural Mechanisms
- Keywords
- sensorimotor learning, motor cortex, layer 2/3 neurons, population coding, licking behavior, touch, neuronal ensembles, sensorimotor integration, neuroplasticity
- MeSH terms
- Animals, Behavior, Animal, Hippocampus, Learning, Microscopy, Models, Neurological, Motor Cortex, Neuronal Plasticity, Psychomotor Performance, Tongue, Touch, Vibrissae, Long-Term Potentiation, Mice, Rats, Feedback, Sensory
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