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Characterization of the Sense of Agency over the Actions of Neural-machine Interface-operated Prostheses

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Haptic communication optimises joint decisions and affords implicit confidence sharing.

Giovanni Pezzulo¹, Lucas Roche², Ludovic Saint-Bauzel²

¹Institute of Cognitive Sciences and Technologies, National Research Council, Via S. Martino della Battaglia 44, 00185, Rome, Italy. giovanni.pezzulo@istc.cnr.it.

Scientific Reports

|January 14, 2021

Summary

This summary is machine-generated.

Haptic coupling enables faster, more accurate group decisions through implicit confidence sharing. This sensorimotor communication outperforms explicit methods and individual performance.

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Area of Science:

Cognitive Science
Human-Computer Interaction
Social Psychology

Background:

Optimal group decisions often surpass individual capabilities.
Previous research emphasized explicit communication of confidence for effective group decision-making.
The role of implicit communication channels, like haptic coupling, remains largely unexplored.

Purpose of the Study:

To test the hypothesis that haptic coupling can facilitate optimal group decisions.
To investigate if implicit communication via touch can enhance group performance in perceptual tasks.
To compare the efficiency of haptic communication with explicit communication methods.

Main Methods:

Dyads were engaged in a perceptual discrimination task under haptic coupling.
Performance metrics included accuracy and decision-making speed.
Computational analyses were used to examine confidence sharing through movement modulation (timing and force).

Main Results:

Haptically coupled dyads achieved higher accuracy than their best individual members.
Dyads using haptic coupling were five times faster than those using explicit communication.
Implicit confidence sharing was observed through modulated movement patterns, indicating leadership dynamics.

Conclusions:

Haptic coupling provides an effective channel for implicit confidence sharing in groups.
Sensorimotor communication can lead to faster and more accurate group decisions.
This research suggests potential for developing novel negotiation technologies leveraging haptic communication.