Tactile acuity charts: a reliable measure of spatial acuity.

For assessing tactile spatial resolution it has recently been recommended to use tactile acuity charts which follow the design principles of the Snellen letter charts for visual acuity and involve active touch. However, it is currently unknown whether acuity thresholds obtained with this newly devel...

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Autores principales:	Patrick Bruns, Carlos J Camargo, Humberto Campanella, Jaume Esteve, Hubert R Dinse, Brigitte Röder
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2014
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/364ece57a37346e6ba4300d38ff2039a
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spelling	oai:doaj.org-article:364ece57a37346e6ba4300d38ff2039a2021-11-18T08:33:57ZTactile acuity charts: a reliable measure of spatial acuity.1932-620310.1371/journal.pone.0087384https://doaj.org/article/364ece57a37346e6ba4300d38ff2039a2014-01-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/24504346/pdf/?tool=EBIhttps://doaj.org/toc/1932-6203For assessing tactile spatial resolution it has recently been recommended to use tactile acuity charts which follow the design principles of the Snellen letter charts for visual acuity and involve active touch. However, it is currently unknown whether acuity thresholds obtained with this newly developed psychophysical procedure are in accordance with established measures of tactile acuity that involve passive contact with fixed duration and control of contact force. Here we directly compared tactile acuity thresholds obtained with the acuity charts to traditional two-point and grating orientation thresholds in a group of young healthy adults. For this purpose, two types of charts, using either Braille-like dot patterns or embossed Landolt rings with different orientations, were adapted from previous studies. Measurements with the two types of charts were equivalent, but generally more reliable with the dot pattern chart. A comparison with the two-point and grating orientation task data showed that the test-retest reliability of the acuity chart measurements after one week was superior to that of the passive methods. Individual thresholds obtained with the acuity charts agreed reasonably with the grating orientation threshold, but less so with the two-point threshold that yielded relatively distinct acuity estimates compared to the other methods. This potentially considerable amount of mismatch between different measures of tactile acuity suggests that tactile spatial resolution is a complex entity that should ideally be measured with different methods in parallel. The simple test procedure and high reliability of the acuity charts makes them a promising complement and alternative to the traditional two-point and grating orientation thresholds.Patrick BrunsCarlos J CamargoHumberto CampanellaJaume EsteveHubert R DinseBrigitte RöderPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 9, Iss 2, p e87384 (2014)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Patrick Bruns Carlos J Camargo Humberto Campanella Jaume Esteve Hubert R Dinse Brigitte Röder Tactile acuity charts: a reliable measure of spatial acuity.
description	For assessing tactile spatial resolution it has recently been recommended to use tactile acuity charts which follow the design principles of the Snellen letter charts for visual acuity and involve active touch. However, it is currently unknown whether acuity thresholds obtained with this newly developed psychophysical procedure are in accordance with established measures of tactile acuity that involve passive contact with fixed duration and control of contact force. Here we directly compared tactile acuity thresholds obtained with the acuity charts to traditional two-point and grating orientation thresholds in a group of young healthy adults. For this purpose, two types of charts, using either Braille-like dot patterns or embossed Landolt rings with different orientations, were adapted from previous studies. Measurements with the two types of charts were equivalent, but generally more reliable with the dot pattern chart. A comparison with the two-point and grating orientation task data showed that the test-retest reliability of the acuity chart measurements after one week was superior to that of the passive methods. Individual thresholds obtained with the acuity charts agreed reasonably with the grating orientation threshold, but less so with the two-point threshold that yielded relatively distinct acuity estimates compared to the other methods. This potentially considerable amount of mismatch between different measures of tactile acuity suggests that tactile spatial resolution is a complex entity that should ideally be measured with different methods in parallel. The simple test procedure and high reliability of the acuity charts makes them a promising complement and alternative to the traditional two-point and grating orientation thresholds.
format	article
author	Patrick Bruns Carlos J Camargo Humberto Campanella Jaume Esteve Hubert R Dinse Brigitte Röder
author_facet	Patrick Bruns Carlos J Camargo Humberto Campanella Jaume Esteve Hubert R Dinse Brigitte Röder
author_sort	Patrick Bruns
title	Tactile acuity charts: a reliable measure of spatial acuity.
title_short	Tactile acuity charts: a reliable measure of spatial acuity.
title_full	Tactile acuity charts: a reliable measure of spatial acuity.
title_fullStr	Tactile acuity charts: a reliable measure of spatial acuity.
title_full_unstemmed	Tactile acuity charts: a reliable measure of spatial acuity.
title_sort	tactile acuity charts: a reliable measure of spatial acuity.
publisher	Public Library of Science (PLoS)
publishDate	2014
url	https://doaj.org/article/364ece57a37346e6ba4300d38ff2039a
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Tactile acuity charts: a reliable measure of spatial acuity.

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