Force sharing and other collaborative strategies in a dyadic force perception task

PloS One
Fabio Tatti, Gabriel Baud-Bovy

Abstract

When several persons perform a physical task jointly, such as transporting an object together, the interaction force that each person experiences is the sum of the forces applied by all other persons on the same object. Therefore, there is a fundamental ambiguity about the origin of the force that each person experiences. This study investigated the ability of a dyad (two persons) to identify the direction of a small force produced by a haptic device and applied to a jointly held object. In this particular task, the dyad might split the force produced by the haptic device (the external force) in an infinite number of ways, depending on how the two partners interacted physically. A major objective of this study was to understand how the two partners coordinated their action to perceive the direction of the third force that was applied to the jointly held object. This study included a condition where each participant responded independently and another one where the two participants had to agree upon a single negotiated response. The results showed a broad range of behaviors. In general, the external force was not split in a way that would maximize the joint performance. In fact, the external force was often split very unequally,...Continue Reading

References

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Jan 1, 2013·IEEE Transactions on Haptics·Raphaela GrotenAngelika Peer
Jun 13, 2014·PloS One·Jacopo ZenzeriPietro Morasso
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Software Mentioned

Windows 7
R
Force Dimension DHD

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