{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,11]],"date-time":"2025-10-11T02:40:42Z","timestamp":1760150442600,"version":"build-2065373602"},"reference-count":25,"publisher":"MDPI AG","issue":"11","license":[{"start":{"date-parts":[[2023,11,19]],"date-time":"2023-11-19T00:00:00Z","timestamp":1700352000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"VINCI Autoroutes Foundation","award":["187783","114\/12\/PRO\/2023"],"award-info":[{"award-number":["187783","114\/12\/PRO\/2023"]}]},{"name":"Universit\u00e9 de Picardie Jules Verne","award":["187783","114\/12\/PRO\/2023"],"award-info":[{"award-number":["187783","114\/12\/PRO\/2023"]}]},{"name":"Agence Universitaire de la Francophonie","award":["187783","114\/12\/PRO\/2023"],"award-info":[{"award-number":["187783","114\/12\/PRO\/2023"]}]},{"name":"J\u00f3zef Pi\u0142sudski University of Physical Education in Warsaw","award":["187783","114\/12\/PRO\/2023"],"award-info":[{"award-number":["187783","114\/12\/PRO\/2023"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Entropy"],"abstract":"<jats:p>Over the past decade, researchers have focused on studying the functional context of perceiving painful stimuli, particularly concerning the posturographic correlates of emotional processing. The aim of this study was to investigate the differential modulation of non-linear measures characterizing postural control in the context of perceiving painful stimuli. The study involved 36 healthy young participants who, while standing, viewed images depicting feet and hands in painful or non-painful situations, both actively (by imagining themselves affected by the situation) and passively. For Center of Pressure (COP) displacement, three non-linear measures (Sample Entropy, Fractal Dimension, and Lyapunov exponent) were calculated. The results suggest lower values of FD and LyE in response to active stimulation compared to those recorded for passive stimulation. Above all, our results pledge for the usefulness of the Lyapunov exponent for assessing postural modulation dynamics in response to painful stimuli perception. The feasibility of this calculation could provide an interesting insight in the collection of biomarkers related to postural correlates of emotional processes and their modulation in neurological disease where socio-affective functions can be often impaired before cognitive ones.<\/jats:p>","DOI":"10.3390\/e25111561","type":"journal-article","created":{"date-parts":[[2023,11,20]],"date-time":"2023-11-20T00:30:50Z","timestamp":1700440250000},"page":"1561","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":6,"title":["Non-Linear Measures of Postural Control in Response to Painful and Non-Painful Visual Stimuli"],"prefix":"10.3390","volume":"25","author":[{"given":"Alexandre","family":"Vonesch","sequence":"first","affiliation":[{"name":"UR-UPJV 4559 LNFP Laboratoire de Neurosciences Fonctionnelles et Pathologies, Universit\u00e9 de Picardie Jules Verne, 80054 Amiens, France"}]},{"ORCID":"https:\/\/orcid.org\/0009-0008-5202-7770","authenticated-orcid":false,"given":"Cassandre","family":"Duhot","sequence":"additional","affiliation":[{"name":"UR-UPJV 4559 LNFP Laboratoire de Neurosciences Fonctionnelles et Pathologies, Universit\u00e9 de Picardie Jules Verne, 80054 Amiens, France"}]},{"given":"Thierry","family":"Lelard","sequence":"additional","affiliation":[{"name":"UR UPJV 3300 APERE Adaptation Physiologiques \u00e0 l\u2019Exercice et R\u00e9adaptation \u00e0 l\u2019Effort, Universit\u00e9 de Picardie Jules Verne, 80054 Amiens, France"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-3625-3072","authenticated-orcid":false,"given":"Guillaume","family":"L\u00e9onard","sequence":"additional","affiliation":[{"name":"Research Centre on Aging, CIUSSS de l\u2019Estrie\u2014CHUS, Sherbrooke, QC J1H 4C4, Canada"},{"name":"School of Rehabilitation, Faculty of Medicine and Health Sciences, Universit\u00e9 de Sherbrooke, Sherbrooke, QC J1H 5N4, Canada"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8452-6824","authenticated-orcid":false,"given":"Michalina","family":"B\u0142a\u017ckiewicz","sequence":"additional","affiliation":[{"name":"Faculty of Rehabilitation, The J\u00f3zef Pi\u0142sudski University of Physical Education in Warsaw, 00-809 Warsaw, Poland"}]},{"given":"Harold","family":"Mouras","sequence":"additional","affiliation":[{"name":"UR-UPJV 4559 LNFP Laboratoire de Neurosciences Fonctionnelles et Pathologies, Universit\u00e9 de Picardie Jules Verne, 80054 Amiens, France"}]}],"member":"1968","published-online":{"date-parts":[[2023,11,19]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"285","DOI":"10.1016\/j.neucli.2015.07.004","article-title":"Which Biomechanical Models Are Currently Used in Standing Posture Analysis?","volume":"45","year":"2015","journal-title":"Neurophysiol. 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