{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,29]],"date-time":"2026-04-29T22:30:35Z","timestamp":1777501835383,"version":"3.51.4"},"reference-count":60,"publisher":"Wiley","issue":"16","license":[{"start":{"date-parts":[[2025,7,30]],"date-time":"2025-07-30T00:00:00Z","timestamp":1753833600000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by-nc\/4.0\/"}],"content-domain":{"domain":["physoc.onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["The Journal of Physiology"],"published-print":{"date-parts":[[2025,8]]},"abstract":"<jats:sec><jats:title>Abstract<\/jats:title><jats:p>Stochastic resonance sensory input modulates the central nervous system's excitability, thereby possibly influencing motor skill learning and retention. We investigated the effects of transcutaneous spinal random noise stimulation (tsRNS) at the cervical level on motor skill learning and corticospinal transmission in healthy humans. Participants performed a 20\u00a0min visuomotor tracking training task requiring rapid shifts in pinch force, with motor performance tests conducted before, immediately after, 1\u00a0day after and 7\u00a0days after the training to assess motor skill learning and retention. During the task, participants received real or sham tsRNS for 20 and 0.5\u00a0min, respectively. Motor performance improved equally in both groups immediately after training; however, the real tsRNS group showed a higher performance than the sham group at 1 and 7\u00a0days post\u2010training. Beta\u2010band corticomuscular coherence increased immediately after training in both groups, and higher performance on 1\u00a0day after the training was positively correlated with a greater change in corticomuscular coherence. To elucidate the mechanisms contributing to the enhanced motor memory retention induced by tsRNS, we investigated its effects on cortical and spinal excitability. We observed increased intracortical facilitation and somatosensory evoked potential amplitude following tsRNS; however, the efficacy of cortico\u2010motoneuronal synaptic transmissions and the excitability of spinal motoneurons remained unchanged. Collectively, tsRNS can enhance the corticospinal drive to spinal motoneurons indirectly by increasing the ascending afferent input strength and cortical excitability via the augmented activity of facilitatory interneurons, resulting in improved motor memory retention. Thus, tsRNS may have important clinical applications for rehabilitation after central nervous system lesions.\n<jats:boxed-text content-type=\"graphic\" position=\"anchor\"><jats:graphic xmlns:xlink=\"http:\/\/www.w3.org\/1999\/xlink\" mimetype=\"image\/png\" position=\"anchor\" specific-use=\"enlarged-web-image\" xlink:href=\"graphic\/tjp70010-gra-0001-m.png\"><jats:alt-text>image<\/jats:alt-text><\/jats:graphic><\/jats:boxed-text><\/jats:p><\/jats:sec><jats:sec><jats:title>Key points<\/jats:title><jats:p><jats:list list-type=\"bullet\">\n<jats:list-item><jats:p>Stochastic resonance sensory input modulates the excitability of the central nervous system and may influence motor skill learning and motor memory retention.<\/jats:p><\/jats:list-item>\n<jats:list-item><jats:p>Transcutaneous spinal random noise stimulation (tsRNS) applied at the cervical level can enhance motor skill learning and motor memory retention in healthy humans.<\/jats:p><\/jats:list-item>\n<jats:list-item><jats:p>tsRNS can increase the ascending afferent input to the cortex and the excitability of the intracortical circuits rather than directly modulating the descending motor output, resulting in improved motor memory retention.<\/jats:p><\/jats:list-item>\n<jats:list-item><jats:p>These findings suggest that tsRNS is an effective strategy for promoting functional motor recovery of the upper limb after the development of central nervous system lesions.<\/jats:p><\/jats:list-item>\n<\/jats:list><\/jats:p><\/jats:sec>","DOI":"10.1113\/jp287804","type":"journal-article","created":{"date-parts":[[2025,7,30]],"date-time":"2025-07-30T11:23:31Z","timestamp":1753874611000},"page":"4637-4657","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":2,"title":["Transcutaneous spinal random noise stimulation enhances motor memory consolidation and corticospinal transmission in humans"],"prefix":"10.1113","volume":"603","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-2330-2485","authenticated-orcid":false,"given":"Mitsuhiro","family":"Nito","sequence":"first","affiliation":[{"name":"Department of Occupational Therapy Yamagata Prefectural University of Health Sciences  Kamiyanagi Yamagata Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Daisuke","family":"Kudo","sequence":"additional","affiliation":[{"name":"Department of Physical Therapy Yamagata Prefectural University of Health Sciences  Kamiyanagi Yamagata Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Tadaki","family":"Koseki","sequence":"additional","affiliation":[{"name":"Department of Rehabilitation Yamagata Saisei Hospital  Oki\u2010machi Yamagata Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Ippei","family":"Nojima","sequence":"additional","affiliation":[{"name":"Major in Rehabilitation Science, Department of Health Sciences Nagoya City University, Mizuho\u2010ku  Nagoya Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Shigeo","family":"Tanabe","sequence":"additional","affiliation":[{"name":"Faculty of Rehabilitation, School of Health Sciences Fujita Health University  Toyoake\u2010shi Aichi Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2206-8586","authenticated-orcid":false,"given":"Tomofumi","family":"Yamaguchi","sequence":"additional","affiliation":[{"name":"Department of Physical Therapy, Human Health Sciences, Graduate School of Medicine Kyoto University  Sakyo\u2010ku Kyoto 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