Vibrotactile display design: Quantifying the importance of age and various factors on reaction times.

Numerous factors affect reaction times to vibrotactile cues. Therefore, it is important to consider the relative magnitudes of these time delays when designing vibrotactile displays for real-time applications. The objectives of this study were to quantify reaction times to typical vibrotactile stimu...

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Main Authors: Tian Bao, Lydia Su, Catherine Kinnaird, Mohammed Kabeto, Peter B Shull, Kathleen H Sienko
Format: Article
Language:English
Published: Public Library of Science (PLoS) 2019-01-01
Series:PLoS ONE
Online Access:https://doi.org/10.1371/journal.pone.0219737
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author Tian Bao
Lydia Su
Catherine Kinnaird
Mohammed Kabeto
Peter B Shull
Kathleen H Sienko
author_facet Tian Bao
Lydia Su
Catherine Kinnaird
Mohammed Kabeto
Peter B Shull
Kathleen H Sienko
author_sort Tian Bao
collection DOAJ
description Numerous factors affect reaction times to vibrotactile cues. Therefore, it is important to consider the relative magnitudes of these time delays when designing vibrotactile displays for real-time applications. The objectives of this study were to quantify reaction times to typical vibrotactile stimuli parameters through direct comparison within a single experimental setting, and to determine the relative importance of these factors on reaction times. Young (n = 10, 21.9 ± 1.3 yrs) and older adults (n = 13, 69.4 ± 5.0 yrs) performed simple reaction time tasks by responding to vibrotactile stimuli using a thumb trigger while frequency, location, auditory cues, number of tactors in the same location, and tactor type were varied. Participants also performed a secondary task in a subset of the trials. The factors investigated in this study affected reaction times by 20-300 ms (reaction time findings are noted in parentheses) depending on the specific stimuli condition. In general, auditory cues generated by the tactors (<20 ms), vibration frequency (<20 ms), number of tactors in the same location (<30 ms) and tactor type (<50 ms) had relatively small effects on reaction times, while stimulus location (20-120 ms) and secondary cognitive task (>130 ms) had relatively large effects. Factors affected young and older adults' reaction times in a similar manner, but with different magnitudes. These findings can inform the development of vibrotactile displays by enabling designers to directly compare the relative effects of key factors on reaction times.
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spelling doaj.art-b93172037f684b5a9e2c87dd92d281512022-12-21T18:26:57ZengPublic Library of Science (PLoS)PLoS ONE1932-62032019-01-01148e021973710.1371/journal.pone.0219737Vibrotactile display design: Quantifying the importance of age and various factors on reaction times.Tian BaoLydia SuCatherine KinnairdMohammed KabetoPeter B ShullKathleen H SienkoNumerous factors affect reaction times to vibrotactile cues. Therefore, it is important to consider the relative magnitudes of these time delays when designing vibrotactile displays for real-time applications. The objectives of this study were to quantify reaction times to typical vibrotactile stimuli parameters through direct comparison within a single experimental setting, and to determine the relative importance of these factors on reaction times. Young (n = 10, 21.9 ± 1.3 yrs) and older adults (n = 13, 69.4 ± 5.0 yrs) performed simple reaction time tasks by responding to vibrotactile stimuli using a thumb trigger while frequency, location, auditory cues, number of tactors in the same location, and tactor type were varied. Participants also performed a secondary task in a subset of the trials. The factors investigated in this study affected reaction times by 20-300 ms (reaction time findings are noted in parentheses) depending on the specific stimuli condition. In general, auditory cues generated by the tactors (<20 ms), vibration frequency (<20 ms), number of tactors in the same location (<30 ms) and tactor type (<50 ms) had relatively small effects on reaction times, while stimulus location (20-120 ms) and secondary cognitive task (>130 ms) had relatively large effects. Factors affected young and older adults' reaction times in a similar manner, but with different magnitudes. These findings can inform the development of vibrotactile displays by enabling designers to directly compare the relative effects of key factors on reaction times.https://doi.org/10.1371/journal.pone.0219737
spellingShingle Tian Bao
Lydia Su
Catherine Kinnaird
Mohammed Kabeto
Peter B Shull
Kathleen H Sienko
Vibrotactile display design: Quantifying the importance of age and various factors on reaction times.
PLoS ONE
title Vibrotactile display design: Quantifying the importance of age and various factors on reaction times.
title_full Vibrotactile display design: Quantifying the importance of age and various factors on reaction times.
title_fullStr Vibrotactile display design: Quantifying the importance of age and various factors on reaction times.
title_full_unstemmed Vibrotactile display design: Quantifying the importance of age and various factors on reaction times.
title_short Vibrotactile display design: Quantifying the importance of age and various factors on reaction times.
title_sort vibrotactile display design quantifying the importance of age and various factors on reaction times
url https://doi.org/10.1371/journal.pone.0219737
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