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Sensory feedback from a prosthetic hand based on air-mediated pressure from the hand to the forearm skin.

Antfolk, Christian LU ; Björkman, Anders LU ; Frank, Sven-Olof; Sebelius, Fredrik; Lundborg, Göran LU and Rosén, Birgitta LU (2012) In Journal of rehabilitation medicine : official journal of the UEMS European Board of Physical and Rehabilitation Medicine 44(8). p.702-707
Abstract
Objective:

Lack of sensory feedback is a drawback in today's hand prostheses. We present here a non-invasive simple sensory feedback system, which provides the user of a prosthetic hand with sensory feedback on the arm stump. It is mediated by air in a closed loop system connecting silicone pads on the prosthetic hand with pads on the amputation stump. The silicone pads in a "tactile display" on the amputation stump expand when their corresponding sensor-bulb in the prosthesis is touched, evoking an experience of "real touch".



Methods:

Twelve trans-radial amputees and 20 healthy non-amputees participated in the study. We investigated the capacity of the system to mediate detection of touch,... (More)
Objective:

Lack of sensory feedback is a drawback in today's hand prostheses. We present here a non-invasive simple sensory feedback system, which provides the user of a prosthetic hand with sensory feedback on the arm stump. It is mediated by air in a closed loop system connecting silicone pads on the prosthetic hand with pads on the amputation stump. The silicone pads in a "tactile display" on the amputation stump expand when their corresponding sensor-bulb in the prosthesis is touched, evoking an experience of "real touch".



Methods:

Twelve trans-radial amputees and 20 healthy non-amputees participated in the study. We investigated the capacity of the system to mediate detection of touch, discrimination between different levels of pressure and, on the amputees also, the ability to locate touch.



Results:

The results showed a median touch threshold of 80 and 60 g in amputees and non-amputees, respectively, and 90% and 80% correct answers, respectively, in discrimination between 2 levels of pressure. The amputees located touch (3 sites) correctly in 96% of trials.



Conclusion:

This simple sensory feedback system has the potential to restore sensory feedback in hand amputees and thus it could be a useful tool to enhance prosthesis use. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Journal of rehabilitation medicine : official journal of the UEMS European Board of Physical and Rehabilitation Medicine
volume
44
issue
8
pages
702 - 707
publisher
Taylor & Francis
external identifiers
  • wos:000306296400015
  • pmid:22729800
  • scopus:84865973189
ISSN
1651-2081
DOI
10.2340/16501977-1001
language
English
LU publication?
yes
id
12c49221-f387-4aa8-b9b6-375c3c815fd7 (old id 2859049)
alternative location
http://www.ncbi.nlm.nih.gov/pubmed/22729800?dopt=Abstract
date added to LUP
2012-07-04 19:13:36
date last changed
2017-11-12 03:33:57
@article{12c49221-f387-4aa8-b9b6-375c3c815fd7,
  abstract     = {Objective: <br/><br>
Lack of sensory feedback is a drawback in today's hand prostheses. We present here a non-invasive simple sensory feedback system, which provides the user of a prosthetic hand with sensory feedback on the arm stump. It is mediated by air in a closed loop system connecting silicone pads on the prosthetic hand with pads on the amputation stump. The silicone pads in a "tactile display" on the amputation stump expand when their corresponding sensor-bulb in the prosthesis is touched, evoking an experience of "real touch". <br/><br>
<br/><br>
Methods: <br/><br>
Twelve trans-radial amputees and 20 healthy non-amputees participated in the study. We investigated the capacity of the system to mediate detection of touch, discrimination between different levels of pressure and, on the amputees also, the ability to locate touch. <br/><br>
<br/><br>
Results: <br/><br>
The results showed a median touch threshold of 80 and 60 g in amputees and non-amputees, respectively, and 90% and 80% correct answers, respectively, in discrimination between 2 levels of pressure. The amputees located touch (3 sites) correctly in 96% of trials. <br/><br>
<br/><br>
Conclusion: <br/><br>
This simple sensory feedback system has the potential to restore sensory feedback in hand amputees and thus it could be a useful tool to enhance prosthesis use.},
  author       = {Antfolk, Christian and Björkman, Anders and Frank, Sven-Olof and Sebelius, Fredrik and Lundborg, Göran and Rosén, Birgitta},
  issn         = {1651-2081},
  language     = {eng},
  number       = {8},
  pages        = {702--707},
  publisher    = {Taylor & Francis},
  series       = {Journal of rehabilitation medicine : official journal of the UEMS European Board of Physical and Rehabilitation Medicine},
  title        = {Sensory feedback from a prosthetic hand based on air-mediated pressure from the hand to the forearm skin.},
  url          = {http://dx.doi.org/10.2340/16501977-1001},
  volume       = {44},
  year         = {2012},
}