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The Human Octopus: Controlling supernumerary hands with the help of virtual reality

Sander Kulu, Madis Vasser, Raul Vicente Zafra, Jaan Aru
doi: https://doi.org/10.1101/056812
Sander Kulu
1Institute of Computer Science, University of Tartu, Tartu, Estonia
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Madis Vasser
1Institute of Computer Science, University of Tartu, Tartu, Estonia
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Raul Vicente Zafra
1Institute of Computer Science, University of Tartu, Tartu, Estonia
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Jaan Aru
1Institute of Computer Science, University of Tartu, Tartu, Estonia
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  • For correspondence: jaan.aru@gmail.com
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Abstract

We investigated the “human octopus” phenomenon where subjects controlled virtual supernumerary hands through hand tracking technology and virtualreality. Four experiments were developed to study how subjects (n=10) operate with different number and behaviour of supernumerary hands. The behaviours involved inserting movement delays to the virtual hands and adjustingtheir movement scale or position. It was found that having more hands to operate with does not necessarily mean higher success rate while performinga certain task. However, supernumerary hands could bemade more effective by adjusting the associated movement scales of the extra hands. The subjective feeling and ownership of the hands diminished when a delay was inserted for the virtual hands or when their position was altered.

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The copyright holder for this preprint is the author/funder, who has granted bioRxiv a license to display the preprint in perpetuity. It is made available under a CC-BY 4.0 International license.
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Posted June 04, 2016.
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The Human Octopus: Controlling supernumerary hands with the help of virtual reality
Sander Kulu, Madis Vasser, Raul Vicente Zafra, Jaan Aru
bioRxiv 056812; doi: https://doi.org/10.1101/056812
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The Human Octopus: Controlling supernumerary hands with the help of virtual reality
Sander Kulu, Madis Vasser, Raul Vicente Zafra, Jaan Aru
bioRxiv 056812; doi: https://doi.org/10.1101/056812

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