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Differential effects of skilled reaching training on the temporal and spatial organization of somatosensory input to cortical and striatal motor circuits
Integrative Neurophysiology and Neurotechnology, Department of Experimental Medical Sciences, Lund University, Lund, Sweden.
Umeå universitet, Medicinska fakulteten, Institutionen för integrativ medicinsk biologi (IMB).ORCID-id: 0000-0002-2786-7910
Integrative Neurophysiology and Neurotechnology, Department of Experimental Medical Sciences, Lund University, Lund, Sweden.
Integrative Neurophysiology and Neurotechnology, Department of Experimental Medical Sciences, Lund University, Lund, Sweden.
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2022 (Engelska)Ingår i: Journal of Neurophysiology, ISSN 0022-3077, E-ISSN 1522-1598, Vol. 127, nr 1, s. 225-238Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

It has been hypothesized that to perform sensorimotor transformations efficiently, somatosensory information being fed back to a particular motor circuit is organized in accordance with the mechanical loading patterns of the skin that result from the motor activity generated by that circuit. Rearrangements of sensory information to different motor circuits could in this respect constitute a key component of sensorimotor learning. We here explored whether the organization of tactile input from the plantar forepaw of the rat to cortical and striatal circuits is affected by a period of extensive sensorimotor training in a skilled reaching and grasping task. Our data show that the representation of tactile stimuli in terms of both temporal and spatial response patterns changes as a consequence of the training and that spatial changes particularly involve the primary motor cortex. Based on the observed reorganization, we propose that reshaping of the spatiotemporal representation of the tactile afference to motor circuits is an integral component of the learning process that underlies skill acquisition in reaching and grasping.

Ort, förlag, år, upplaga, sidor
American Physiological Society , 2022. Vol. 127, nr 1, s. 225-238
Nyckelord [en]
Corticostriatal, In vivo, Learning, Neurophysiology
Nationell ämneskategori
Neurovetenskaper Fysiologi och anatomi
Identifikatorer
URN: urn:nbn:se:umu:diva-192265DOI: 10.1152/jn.00464.2021ISI: 000743746500005PubMedID: 34936519Scopus ID: 2-s2.0-85123790821OAI: oai:DiVA.org:umu-192265DiVA, id: diva2:1643917
Forskningsfinansiär
Forte, Forskningsrådet för hälsa, arbetsliv och välfärd, 2016-07213Vetenskapsrådet, 2018-02717Vetenskapsrådet, 325-2011-6441Tillgänglig från: 2022-03-11 Skapad: 2022-03-11 Senast uppdaterad: 2025-02-10Bibliografiskt granskad

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Censoni, LucianoPetersson, Per

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