Long-term stability of single neuron activity in the motor system.

Autor: Jensen KT; Department of Organismic and Evolutionary Biology and Center for Brain Science, Harvard University, Cambridge, MA, USA.; Computational and Biological Learning Lab, Department of Engineering, University of Cambridge, Cambridge, UK., Kadmon Harpaz N; Department of Organismic and Evolutionary Biology and Center for Brain Science, Harvard University, Cambridge, MA, USA., Dhawale AK; Department of Organismic and Evolutionary Biology and Center for Brain Science, Harvard University, Cambridge, MA, USA.; Centre for Neuroscience, Indian Institute of Science, Bangalore, India., Wolff SBE; Department of Organismic and Evolutionary Biology and Center for Brain Science, Harvard University, Cambridge, MA, USA.; Department of Pharmacology, University of Maryland School of Medicine, Baltimore, MD, USA., Ölveczky BP; Department of Organismic and Evolutionary Biology and Center for Brain Science, Harvard University, Cambridge, MA, USA. olveczky@fas.harvard.edu.
Jazyk: angličtina
Zdroj: Nature neuroscience [Nat Neurosci] 2022 Dec; Vol. 25 (12), pp. 1664-1674. Date of Electronic Publication: 2022 Nov 10.
DOI: 10.1038/s41593-022-01194-3
Abstrakt: How an established behavior is retained and consistently produced by a nervous system in constant flux remains a mystery. One possible solution to ensure long-term stability in motor output is to fix the activity patterns of single neurons in the relevant circuits. Alternatively, activity in single cells could drift over time provided that the population dynamics are constrained to produce the same behavior. To arbitrate between these possibilities, we recorded single-unit activity in motor cortex and striatum continuously for several weeks as rats performed stereotyped motor behaviors-both learned and innate. We found long-term stability in single neuron activity patterns across both brain regions. A small amount of drift in neural activity, observed over weeks of recording, could be explained by concomitant changes in task-irrelevant aspects of the behavior. These results suggest that long-term stable behaviors are generated by single neuron activity patterns that are themselves highly stable.
(© 2022. The Author(s), under exclusive licence to Springer Nature America, Inc.)
Databáze: MEDLINE
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