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Related Experiment Video

Updated: Apr 19, 2026

Creating Virtual-hand and Virtual-face Illusions to Investigate Self-representation

Creating Virtual-hand and Virtual-face Illusions to Investigate Self-representation

Published on: March 1, 2017

Robotically enhanced rubber hand illusion.

Jumpei Arata, Masashi Hattori, Shohei Ichikawa

IEEE Transactions on Haptics

|December 23, 2014

Summary

This summary is machine-generated.

Researchers used a robotic master-slave system to enhance the rubber hand illusion. They found that precise control over temporal delay significantly boosted the multisensory illusion, with effects diminishing after 100 ms.

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Area of Science:

Neuroscience
Robotics
Human-Computer Interaction

Background:

The rubber hand illusion (RHI) is a multisensory illusion where a fake hand is perceived as one's own.
Synchronous tactile stimulation of the subject's hand and the rubber hand is believed to trigger the RHI.
Previous studies on moving RHI often used mechanically constrained systems.

Purpose of the Study:

To investigate the moving rubber hand illusion using a novel robotic master-slave telemanipulator.
To explore the impact of precise temporal delay manipulation on the RHI.
To reduce constraints associated with traditional RHI setups.

Main Methods:

Developed a one-degree-of-freedom master-slave robotic system with an exoskeleton master and a motor-actuated rubber hand.
Enabled unilateral telemanipulation with precise control over temporal delay between the subject's finger and the rubber hand.
Quantified the enhancement of the rubber hand illusion under varying temporal delays.

Main Results:

Robotic instruments significantly enhanced the rubber hand illusion.
A significant correlation was found between temporal delay and the strength of the multisensory illusion.
The illusion's effect significantly decreased at time delays exceeding 100 ms.

Conclusions:

Robotic systems offer a less constrained approach to studying the moving rubber hand illusion.
Temporal delay is a critical factor influencing the rubber hand illusion.
Findings contribute to understanding neural mechanisms of multisensory integration and advancements in master-slave robotics.