Perception of partial slips under tangential loading of the fingertip

Abstract During tactile exploration, partial slips occur systematically at the periphery of fingertip-object contact prior to full slip. Although the mechanics of partial slips are well characterized, the perception of such events is unclear. Here, we performed psychophysical experiments to assess p...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Allan Barrea, Benoit P. Delhaye, Philippe Lefèvre, Jean-Louis Thonnard
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2018
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/5f436704947f4b72995bbb1df58366de
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:5f436704947f4b72995bbb1df58366de
record_format	dspace
spelling	oai:doaj.org-article:5f436704947f4b72995bbb1df58366de2021-12-02T11:40:35ZPerception of partial slips under tangential loading of the fingertip10.1038/s41598-018-25226-w2045-2322https://doaj.org/article/5f436704947f4b72995bbb1df58366de2018-05-01T00:00:00Zhttps://doi.org/10.1038/s41598-018-25226-whttps://doaj.org/toc/2045-2322Abstract During tactile exploration, partial slips occur systematically at the periphery of fingertip-object contact prior to full slip. Although the mechanics of partial slips are well characterized, the perception of such events is unclear. Here, we performed psychophysical experiments to assess partial slip detection ability on smooth transparent surfaces. In these experiments, the index fingertip of human subjects was stroked passively by a smooth, transparent glass plate while we imaged the contact slipping against the glass. We found that subjects were able to detect fingertip slip before full slip occurred when, on average, only 48% of the contact area was slipping. Additionally, we showed that partial slips and plate displacement permitted slip detection, but that the subjects could not rely on tangential force to detect slipping of the plate. Finally, we observed that, keeping the normal contact force constant, slip detection was impeded when the plate was covered with a hydrophobic coating dramatically lowering the contact friction and therefore the amount of fingertip deformation. Together, these results demonstrate that partial slips play an important role in fingertip slip detection and support the hypothesis that the central nervous system relies on them to adjust grip force during object manipulation.Allan BarreaBenoit P. DelhayePhilippe LefèvreJean-Louis ThonnardNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 8, Iss 1, Pp 1-8 (2018)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Allan Barrea Benoit P. Delhaye Philippe Lefèvre Jean-Louis Thonnard Perception of partial slips under tangential loading of the fingertip
description	Abstract During tactile exploration, partial slips occur systematically at the periphery of fingertip-object contact prior to full slip. Although the mechanics of partial slips are well characterized, the perception of such events is unclear. Here, we performed psychophysical experiments to assess partial slip detection ability on smooth transparent surfaces. In these experiments, the index fingertip of human subjects was stroked passively by a smooth, transparent glass plate while we imaged the contact slipping against the glass. We found that subjects were able to detect fingertip slip before full slip occurred when, on average, only 48% of the contact area was slipping. Additionally, we showed that partial slips and plate displacement permitted slip detection, but that the subjects could not rely on tangential force to detect slipping of the plate. Finally, we observed that, keeping the normal contact force constant, slip detection was impeded when the plate was covered with a hydrophobic coating dramatically lowering the contact friction and therefore the amount of fingertip deformation. Together, these results demonstrate that partial slips play an important role in fingertip slip detection and support the hypothesis that the central nervous system relies on them to adjust grip force during object manipulation.
format	article
author	Allan Barrea Benoit P. Delhaye Philippe Lefèvre Jean-Louis Thonnard
author_facet	Allan Barrea Benoit P. Delhaye Philippe Lefèvre Jean-Louis Thonnard
author_sort	Allan Barrea
title	Perception of partial slips under tangential loading of the fingertip
title_short	Perception of partial slips under tangential loading of the fingertip
title_full	Perception of partial slips under tangential loading of the fingertip
title_fullStr	Perception of partial slips under tangential loading of the fingertip
title_full_unstemmed	Perception of partial slips under tangential loading of the fingertip
title_sort	perception of partial slips under tangential loading of the fingertip
publisher	Nature Portfolio
publishDate	2018
url	https://doaj.org/article/5f436704947f4b72995bbb1df58366de
work_keys_str_mv	AT allanbarrea perceptionofpartialslipsundertangentialloadingofthefingertip AT benoitpdelhaye perceptionofpartialslipsundertangentialloadingofthefingertip AT philippelefevre perceptionofpartialslipsundertangentialloadingofthefingertip AT jeanlouisthonnard perceptionofpartialslipsundertangentialloadingofthefingertip
_version_	1718395582995759104

Perception of partial slips under tangential loading of the fingertip

Ejemplares similares