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Control of a Supernumerary Robotic Hand by Foot: An Experimental Study in Virtual Reality.

Abdi E, Burdet E, Bouri M, Bleuler H - PLoS ONE (2015)

Bottom Line: In the operational theater, the surgical team could highly benefit from a robotic supplementary hand under the surgeon's full control.Participants' performance improved within a few minutes of practice without any specific difficulty to complete the tasks.These results suggest that a combination of practice and appropriate tasks can enhance the learning process for controlling a robotic hand by foot.

View Article: PubMed Central - PubMed

Affiliation: Robotic Systems Laboratory, École Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland.

ABSTRACT
In the operational theater, the surgical team could highly benefit from a robotic supplementary hand under the surgeon's full control. The surgeon may so become more autonomous; this may reduce communication errors with the assistants and take over difficult tasks such as holding tools without tremor. In this paper, we therefore examine the possibility to control a third robotic hand with one foot's movements. Three experiments in virtual reality were designed to assess the feasibility of this control strategy, the learning curve of the subjects in different tasks and the coordination of foot movements with the two natural hands. Results show that the limbs are moved simultaneously, in parallel rather than serially. Participants' performance improved within a few minutes of practice without any specific difficulty to complete the tasks. Subjective assessment by the subjects indicated that controlling a third hand by foot has been easy and required only negligible physical and mental efforts. The sense of ownership was reported to improve through the experiments. The mental burden was not directly related to the level of motion required by a task, but depended on the type of activity and practice. The most difficult task was moving two hands and foot in opposite directions. These results suggest that a combination of practice and appropriate tasks can enhance the learning process for controlling a robotic hand by foot.

No MeSH data available.


Related in: MedlinePlus

Average performance time for each participant for the first game.
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pone.0134501.g002: Average performance time for each participant for the first game.

Mentions: The first game was successfully completed by all 13 subjects. Nine subjects succeeded in all trials and four failed once. To infer performance we consider the coordination time between touching the first and the last rectangles. The average coordination time over the subjects and two trials of 1.87±1.14s indicates a good coordination of the three virtual hands. However, Fig 2 exhibits a large variation between the mean coordination times of different subjects (with a 10 fold duration variation between some subjects). This suggests important individual differences in the ability to simultaneously control three limbs between the subjects.


Control of a Supernumerary Robotic Hand by Foot: An Experimental Study in Virtual Reality.

Abdi E, Burdet E, Bouri M, Bleuler H - PLoS ONE (2015)

Average performance time for each participant for the first game.
© Copyright Policy
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4520700&req=5

pone.0134501.g002: Average performance time for each participant for the first game.
Mentions: The first game was successfully completed by all 13 subjects. Nine subjects succeeded in all trials and four failed once. To infer performance we consider the coordination time between touching the first and the last rectangles. The average coordination time over the subjects and two trials of 1.87±1.14s indicates a good coordination of the three virtual hands. However, Fig 2 exhibits a large variation between the mean coordination times of different subjects (with a 10 fold duration variation between some subjects). This suggests important individual differences in the ability to simultaneously control three limbs between the subjects.

Bottom Line: In the operational theater, the surgical team could highly benefit from a robotic supplementary hand under the surgeon's full control.Participants' performance improved within a few minutes of practice without any specific difficulty to complete the tasks.These results suggest that a combination of practice and appropriate tasks can enhance the learning process for controlling a robotic hand by foot.

View Article: PubMed Central - PubMed

Affiliation: Robotic Systems Laboratory, École Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland.

ABSTRACT
In the operational theater, the surgical team could highly benefit from a robotic supplementary hand under the surgeon's full control. The surgeon may so become more autonomous; this may reduce communication errors with the assistants and take over difficult tasks such as holding tools without tremor. In this paper, we therefore examine the possibility to control a third robotic hand with one foot's movements. Three experiments in virtual reality were designed to assess the feasibility of this control strategy, the learning curve of the subjects in different tasks and the coordination of foot movements with the two natural hands. Results show that the limbs are moved simultaneously, in parallel rather than serially. Participants' performance improved within a few minutes of practice without any specific difficulty to complete the tasks. Subjective assessment by the subjects indicated that controlling a third hand by foot has been easy and required only negligible physical and mental efforts. The sense of ownership was reported to improve through the experiments. The mental burden was not directly related to the level of motion required by a task, but depended on the type of activity and practice. The most difficult task was moving two hands and foot in opposite directions. These results suggest that a combination of practice and appropriate tasks can enhance the learning process for controlling a robotic hand by foot.

No MeSH data available.


Related in: MedlinePlus