caa a22 4500 44535125X CHVBK 20180317142844.0 cr unu---uuuuu 170323e20110401xx s 000 0 eng 10.1007/s00221-011-2632-0 doi (NATIONALLICENCE)springer-10.1007/s00221-011-2632-0 A critical speed for gating of tactile detection during voluntary movement [Elektronische Daten] [Anita Cybulska-Klosowicz, El-Mehdi Meftah, Mélissa Raby, Marie-Line Lemieux, C. Chapman] This study addressed the paradoxical observation that movement is essential for tactile exploration, and yet is accompanied by movement-related gating or suppression of tactile detection. Knowing that tactile gating covaries with the speed of movement (faster movements, more gating), we hypothesized that there would be no tactile gating at slower speeds of movement, corresponding to speeds commonly used during tactile exploration (<200mm/s). Subjects (n=21) detected the presence or absence of a weak electrical stimulus applied to the skin of the right middle finger during two conditions: rest and active elbow extension. Movement speed was systematically varied from 50 to ~1,000mm/s. No subject showed evidence of tactile gating at the slowest speed tested, 50mm/s (rest versus movement), but all subjects showed decreased detection at one or more higher speeds. For each subject, we calculated the critical speed, corresponding to the speed at which detection fell to 0.5 (chance). The mean critical speed was 472 mm/s and >200mm/s in almost all subjects (19/21). This result is consistent with our hypothesis that subjects optimize the speed of movement during tactile exploration to avoid speeds associated with tactile gating. This strategy thus maximizes the quality of the tactile feedback generated during tactile search and improves perception. Springer-Verlag, 2011 Tactile detection nationallicence Movement-related gating nationallicence Tactile exploration nationallicence Somatosensory nationallicence Psychophysics nationallicence Cybulska-Klosowicz Anita Groupe de Recherche sur le Système Nerveux Central (GRSNC), Département de Physiologie, Faculté de Médecine, Université de Montréal, Succursale Centre Ville, PO Box 6128, H3C 3J7, Montreal, QC, Canada aut Meftah El-Mehdi Groupe de Recherche sur le Système Nerveux Central (GRSNC), Département de Physiologie, Faculté de Médecine, Université de Montréal, Succursale Centre Ville, PO Box 6128, H3C 3J7, Montreal, QC, Canada aut Raby Mélissa Groupe de Recherche sur le Système Nerveux Central (GRSNC), Département de Physiologie, Faculté de Médecine, Université de Montréal, Succursale Centre Ville, PO Box 6128, H3C 3J7, Montreal, QC, Canada aut Lemieux Marie-Line Groupe de Recherche sur le Système Nerveux Central (GRSNC), Département de Physiologie, Faculté de Médecine, Université de Montréal, Succursale Centre Ville, PO Box 6128, H3C 3J7, Montreal, QC, Canada aut Chapman C. Groupe de Recherche sur le Système Nerveux Central (GRSNC), Département de Physiologie, Faculté de Médecine, Université de Montréal, Succursale Centre Ville, PO Box 6128, H3C 3J7, Montreal, QC, Canada aut Experimental Brain Research Springer-Verlag 210/2(2011-04-01), 291-301 0014-4819 210:2<291 2011 210 221 https://doi.org/10.1007/s00221-011-2632-0 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s00221-011-2632-0 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Cybulska-Klosowicz Anita Groupe de Recherche sur le Système Nerveux Central (GRSNC), Département de Physiologie, Faculté de Médecine, Université de Montréal, Succursale Centre Ville, PO Box 6128, H3C 3J7, Montreal, QC, Canada aut NATIONALLICENCE 700 1- Meftah El-Mehdi Groupe de Recherche sur le Système Nerveux Central (GRSNC), Département de Physiologie, Faculté de Médecine, Université de Montréal, Succursale Centre Ville, PO Box 6128, H3C 3J7, Montreal, QC, Canada aut NATIONALLICENCE 700 1- Raby Mélissa Groupe de Recherche sur le Système Nerveux Central (GRSNC), Département de Physiologie, Faculté de Médecine, Université de Montréal, Succursale Centre Ville, PO Box 6128, H3C 3J7, Montreal, QC, Canada aut NATIONALLICENCE 700 1- Lemieux Marie-Line Groupe de Recherche sur le Système Nerveux Central (GRSNC), Département de Physiologie, Faculté de Médecine, Université de Montréal, Succursale Centre Ville, PO Box 6128, H3C 3J7, Montreal, QC, Canada aut NATIONALLICENCE 700 1- Chapman C. Groupe de Recherche sur le Système Nerveux Central (GRSNC), Département de Physiologie, Faculté de Médecine, Université de Montréal, Succursale Centre Ville, PO Box 6128, H3C 3J7, Montreal, QC, Canada aut NATIONALLICENCE 773 0- Experimental Brain Research Springer-Verlag 210/2(2011-04-01), 291-301 0014-4819 210:2<291 2011 210 221 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer