Training Improves Vibrotactile Spatial Acuity and Intensity Discrimination on the Lower Back Using Coin Motors

Stronks, H. Christiaan; Walker, Janine; Parker, Daniel J.; Barnes, Nick

doi:10.1111/aor.12882

Cited by 16 publications

(14 citation statements)

References 56 publications

(75 reference statements)

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“…We used commercially available 10 mm coin disc tactors (Precision Micro-drives Inc., London, Model 310-117). These inexpensive devices are energy-efficient, easy to use (Stronks et al 2015;Stronks et al 2017), and have been successfully used for similar purposes in recent works (Krueger et al 2017;Shah et al 2018). Vibration is produced by an eccentric rotating mass, the speed of which is controlled by an applied voltage within the range 0V to 3V.…”

Section: Experimental Setup and Protocolmentioning

confidence: 99%

A two alternative forced choice method for assessing vibrotactile discrimination thresholds in the lower limb

Iandolo

Carè

Shah

et al. 2019

Somatosensory & Motor Research

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The development of an easy to implement, quantitative measure to examine vibration perception would be useful for future application in clinical settings. Vibration sense in the lower limb of younger and older adults was examined using the method of constant stimuli and the twoalternative forced choice paradigm. The focus of this experiment was to determine an appropriate stimulation site on the lower limb (tendon versus bone) to assess vibration threshold and to determine if the left and right legs have varying thresholds. Discrimination thresholds obtained at two stimulation sites in the left and right lower limbs showed differences in vibration threshold across the two ages groups, but not across sides of the body nor between stimulation sites within each limb. Overall, the method of constant stimuli can be implemented simply, reliably, and with minimal time. It can also easily be implemented with low-cost technology. Therefore, it could be a good candidate method to assess the presence of specific deep sensitivity deficits in clinical practice, particularly in populations likely to show the onset of sensory deficits.

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Section: Experimental Setup and Protocolmentioning

confidence: 99%

A two alternative forced choice method for assessing vibrotactile discrimination thresholds in the lower limb

Iandolo

Carè

Shah

et al. 2019

Somatosensory & Motor Research

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“…Our subjects were all naïve to the tasks and they did not receive any training. Previous experiments have shown significant training effects in a vibrotactile acuity task using the same motors and we expect that the performance on the grating task with our prototype vibrotactile display may improve likewise. We deliberately did not train our subjects because of the relatively small number of possible grating stimuli that can be generated with an 8 by 8 display.…”

Section: Discussionmentioning

confidence: 73%

Psychophysical Evaluation of a Tactile Display Based on Coin Motors

et al. 2018

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Tactile vision substitution devices present visual images as tactile representations on the skin. In this study we have tested the performance of a prototype 96-tactor vibrotactile using a subset of 64 tactors. We have determined the tactile spatial acuity and intensity discrimination in 14 naïve subjects. Spatial acuity was determined using a grating acuity task. Subjects could successfully identify the orientation of horizontal and vertical gratings with an average psychophysical threshold of 120 mm. When diagonal gratings were included in the analysis, the median performance dropped below psychophysical threshold, but was still significantly above chance at gratings of 142 mm wide. Intensity discrimination yielded an average Weber fraction of 0.44, corresponding to 13 discernable "gray levels" in the available dynamic range. Interleaved stimulation of the motors did not significantly affect spatial acuity or intensity discrimination.

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“…Stronks et al of the NICTA, Computer Vision Research Group, Canberra, Australia investigated the spatial acuity of the skin and the ability of the user to discriminate between stimulus intensities in tactile vision substitution devices for the blind using coin motors on the lower back. It was found that 10 min of computer‐assisted training improved the vibrotactile two‐point discrimination threshold on the lower back by 36%, and that 18 min of training improved the just‐noticeable intensity difference by 44%.…”

Section: Visual Supportmentioning

confidence: 99%

Artificial Organs 2017: A Year in Review

Malchesky¹

2018

Artificial Organs

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In this Editor's Review, articles published in 2017 are organized by category and summarized. We provide a brief reflection of the research and progress in artificial organs intended to advance and better human life while providing insight for continued application of these technologies and methods. Artificial Organs continues in the original mission of its founders "to foster communications in the field of artificial organs on an international level." Artificial Organs continues to publish developments and clinical applications of artificial organ technologies in this broad and expanding field of organ Replacement, Recovery, and Regeneration from all over the world. Peer-reviewed Special Issues this year included contributions from the 12th International Conference on Pediatric Mechanical Circulatory Support Systems and Pediatric Cardiopulmonary Perfusion edited by Dr. Akif Undar, Artificial Oxygen Carriers edited by Drs. Akira Kawaguchi and Jan Simoni, the 24th Congress of the International Society for Mechanical Circulatory Support edited by Dr. Toru Masuzawa, Challenges in the Field of Biomedical Devices: A Multidisciplinary Perspective edited by Dr. Vincenzo Piemonte and colleagues and Functional Electrical Stimulation edited by Dr. Winfried Mayr and colleagues. We take this time also to express our gratitude to our authors for offering their work to this journal. We offer our very special thanks to our reviewers who give so generously of time and expertise to review, critique, and especially provide meaningful suggestions to the author's work whether eventually accepted or rejected. Without these excellent and dedicated reviewers the quality expected from such a journal could not be possible. We also express our special thanks to our Publisher, John Wiley & Sons for their expert attention and support in the production and marketing of Artificial Organs. We look forward to reporting further advances in the coming years.

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Training Improves Vibrotactile Spatial Acuity and Intensity Discrimination on the Lower Back Using Coin Motors

Cited by 16 publications

References 56 publications

A two alternative forced choice method for assessing vibrotactile discrimination thresholds in the lower limb

A two alternative forced choice method for assessing vibrotactile discrimination thresholds in the lower limb

Psychophysical Evaluation of a Tactile Display Based on Coin Motors

Artificial Organs 2017: A Year in Review

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