Tactile speed scaling: contributions of time and space

Journal of Neurophysiology
Alexandra DépeaultC Elaine Chapman

Abstract

A major challenge for the brain is to extract precise information about the attributes of tactile stimuli from signals that co-vary with multiple parameters, e.g., speed and texture in the case of scanning movements. We determined the ability of humans to estimate the tangential speed of surfaces moved under the stationary fingertip and the extent to which the physical characteristics of the surfaces modify speed perception. Scanning speed ranged from 33 to 110 mm/s (duration of motion constant). Subjects could scale tactile scanning speed, but surface structure was essential because the subjects were poor at scaling the speed of a moving smooth surface. For textured surfaces, subjective magnitude estimates increased linearly across the range of speeds tested. The spatial characteristics of the surfaces influenced speed perception, with the roughest surface (8 mm spatial period, SP) being perceived as moving 15% slower than the smoother, textured surfaces (2-3 mm SP). Neither dot disposition (periodic, non periodic) nor dot density contributed to the results, suggesting that the critical factor was dot spacing in the direction of the scan. A single monotonic relation between subjective speed and temporal frequency (speed/SP) wa...Continue Reading

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Citations

Nov 13, 2008·Experimental Brain Research·Abram F J Sanders, Astrid M L Kappers
Jul 7, 2009·Experimental Brain Research·Alexandra DépeaultC Elaine Chapman
Oct 2, 2013·Proceedings of the National Academy of Sciences of the United States of America·Alison I WeberSliman J Bensmaia
Dec 21, 2012·Journal of the Royal Society, Interface·Michael J AdamsJean-Louis Thonnard
Oct 7, 2008·Acta Psychologica·Abram F J Sanders, Astrid M L Kappers
Sep 29, 2015·Scientific Reports·Alessandro MoscatelliMarc O Ernst
Jan 1, 2013·Multisensory Research·George H Van DoornMark A Symmons
Feb 4, 2014·Journal of Neuroscience Methods·Yu-Cheng PeiSliman Bensmaia
Jul 21, 2017·Journal of Neurophysiology·Zoe M Boundy-SingerSliman J Bensmaia
Jul 12, 2013·Journal of Neurophysiology·Alexandra DépeaultC Elaine Chapman
Feb 14, 2014·Journal of Neurophysiology·Louise R ManfrediSliman J Bensmaia
Sep 26, 2014·Journal of Neurophysiology·Yu-Cheng Pei, Sliman J Bensmaia
Oct 2, 2015·Journal of Neurophysiology·Chris J DallmannAlessandro Moscatelli
Aug 28, 2019·PLoS Biology·Benoit P DelhayeSliman J Bensmaia
Aug 28, 2019·PLoS Biology·Mathew E Diamond
Jun 11, 2020·Journal of the Royal Society, Interface·Charles M GreensponSliman J Bensmaia
Oct 16, 2015·Journal of Neurophysiology·Pascal Fortier-Poisson, Allan M Smith
Jul 18, 2019·Journal of Neurophysiology·Alessandro MoscatelliMarc O Ernst
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Jul 8, 2021·Journal of Neurophysiology·Andrea ZangrandiGiovanni Di Pino
Jul 15, 2021·Journal of Neurophysiology·Cécile R ScottoMarc O Ernst
Sep 9, 2021·Journal of Neurophysiology·Colleen P RyanMatteo Bianchi

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