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Effect of scanning speed on texture-elicited vibrations
To sense the texture of a surface, we run our fingers across it, which leads to the elicitation of skin vibrations that depend both on the surface and on exploratory parameters, particularly scanning speed. The transduction and processing of these vibrations mediate the ability to discern fine surfa...
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
The Royal Society
2020
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7328380/ https://www.ncbi.nlm.nih.gov/pubmed/32517632 http://dx.doi.org/10.1098/rsif.2019.0892 |
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author | Greenspon, Charles M. McLellan, Kristine R. Lieber, Justin D. Bensmaia, Sliman J. |
author_facet | Greenspon, Charles M. McLellan, Kristine R. Lieber, Justin D. Bensmaia, Sliman J. |
author_sort | Greenspon, Charles M. |
collection | PubMed |
description | To sense the texture of a surface, we run our fingers across it, which leads to the elicitation of skin vibrations that depend both on the surface and on exploratory parameters, particularly scanning speed. The transduction and processing of these vibrations mediate the ability to discern fine surface features. The objective of the present study is to characterize the effect of changes in scanning speed on texture-elicited vibrations to better understand how the exploratory movements shape the neuronal representation of texture. To this end, we scanned a variety of textures across the fingertip of human participants at a variety of speeds (10–160 mm s(−1)) while measuring the resulting vibrations using a laser Doppler vibrometer. First, we found that the intensity of the vibrations—as indexed by root-mean-square velocity—increases with speed but that the skin displacement remains constant. Second, we found that the frequency composition of the vibrations shifts systematically to higher frequencies with increases in scanning speed. Finally, we show that the speed-dependent shift in frequency composition accounts for the speed-dependent change in intensity. |
format | Online Article Text |
id | pubmed-7328380 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2020 |
publisher | The Royal Society |
record_format | MEDLINE/PubMed |
spelling | pubmed-73283802020-07-02 Effect of scanning speed on texture-elicited vibrations Greenspon, Charles M. McLellan, Kristine R. Lieber, Justin D. Bensmaia, Sliman J. J R Soc Interface Life Sciences–Physics interface To sense the texture of a surface, we run our fingers across it, which leads to the elicitation of skin vibrations that depend both on the surface and on exploratory parameters, particularly scanning speed. The transduction and processing of these vibrations mediate the ability to discern fine surface features. The objective of the present study is to characterize the effect of changes in scanning speed on texture-elicited vibrations to better understand how the exploratory movements shape the neuronal representation of texture. To this end, we scanned a variety of textures across the fingertip of human participants at a variety of speeds (10–160 mm s(−1)) while measuring the resulting vibrations using a laser Doppler vibrometer. First, we found that the intensity of the vibrations—as indexed by root-mean-square velocity—increases with speed but that the skin displacement remains constant. Second, we found that the frequency composition of the vibrations shifts systematically to higher frequencies with increases in scanning speed. Finally, we show that the speed-dependent shift in frequency composition accounts for the speed-dependent change in intensity. The Royal Society 2020-06 2020-06-10 /pmc/articles/PMC7328380/ /pubmed/32517632 http://dx.doi.org/10.1098/rsif.2019.0892 Text en © 2020 The Authors. http://creativecommons.org/licenses/by/4.0/ http://creativecommons.org/licenses/by/4.0/http://creativecommons.org/licenses/by/4.0/Published by the Royal Society under the terms of the Creative Commons Attribution License http://creativecommons.org/licenses/by/4.0/, which permits unrestricted use, provided the original author and source are credited. |
spellingShingle | Life Sciences–Physics interface Greenspon, Charles M. McLellan, Kristine R. Lieber, Justin D. Bensmaia, Sliman J. Effect of scanning speed on texture-elicited vibrations |
title | Effect of scanning speed on texture-elicited vibrations |
title_full | Effect of scanning speed on texture-elicited vibrations |
title_fullStr | Effect of scanning speed on texture-elicited vibrations |
title_full_unstemmed | Effect of scanning speed on texture-elicited vibrations |
title_short | Effect of scanning speed on texture-elicited vibrations |
title_sort | effect of scanning speed on texture-elicited vibrations |
topic | Life Sciences–Physics interface |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7328380/ https://www.ncbi.nlm.nih.gov/pubmed/32517632 http://dx.doi.org/10.1098/rsif.2019.0892 |
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