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R. Soc. B."],"published-print":{"date-parts":[[2025,10]]},"abstract":"<jats:p>\n                    Current models of mental body representations (MBRs) indicate that tactile inputs feed some of them for different functions, implying that altering tactile inputs may affect mental body representations differently. Here, we tested this hypothesis by leveraging repetitive somatosensory stimulation (RSS), known to improve tactile perception by modulating primary somatosensory cortex (SI) activity, and measured its effects over the\n                    <jats:italic toggle=\"yes\">body image<\/jats:italic>\n                    ,\n                    <jats:italic toggle=\"yes\">body model<\/jats:italic>\n                    and\n                    <jats:italic toggle=\"yes\">superficial schema<\/jats:italic>\n                    in a randomized sham-controlled, double-blind crossover study. Results show that repetitive somatosensory stimulation affected the\n                    <jats:italic toggle=\"yes\">body image<\/jats:italic>\n                    , participants perceiving their finger size as being smaller after repetitive somatosensory stimulation. While previous work showed an increase in finger size perception after tactile anaesthesia, these findings reveal that tactile inputs can diametrically modulate the\n                    <jats:italic toggle=\"yes\">body image<\/jats:italic>\n                    . In contrast, repetitive somatosensory stimulation did not seem to alter the\n                    <jats:italic toggle=\"yes\">body model<\/jats:italic>\n                    or\n                    <jats:italic toggle=\"yes\">superficial schema<\/jats:italic>\n                    . In addition, we report a novel mislocalization pattern, with a bias towards the middle finger in the distal phalanges that reverses towards the thumb in the proximal phalanx, enriching the known distortions of the\n                    <jats:italic toggle=\"yes\">superficial schema<\/jats:italic>\n                    . Overall, these findings provide novel insights into the functional organization of mental body representations and their relationships with somatosensory information. Reducing the perceived body size through repetitive somatosensory stimulation could be useful in helping treat\n                    <jats:italic toggle=\"yes\">body image<\/jats:italic>\n                    disturbances.\n                  <\/jats:p>","DOI":"10.1098\/rspb.2025.1714","type":"journal-article","created":{"date-parts":[[2025,10,29]],"date-time":"2025-10-29T05:55:06Z","timestamp":1761717306000},"update-policy":"https:\/\/doi.org\/10.1098\/crossmark-policy","source":"Crossref","is-referenced-by-count":0,"title":["Repetitive somatosensory stimulation shrinks the body image"],"prefix":"10.1098","volume":"292","author":[{"ORCID":"https:\/\/orcid.org\/0009-0003-6903-2289","authenticated-orcid":true,"given":"Malika","family":"Azaroual-Sentucq","sequence":"first","affiliation":[{"name":"Integrative Multisensory Perception Action and Cognition team INSERM U1028, CNRS UMR5292, Universit\u00e9 UCBL Lyon1, Centre de Recherche en Neurosciences de Lyon, Bron 69500, 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