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Related Experiment Video

Updated: Jul 16, 2026

A Method for Evaluating Timeliness and Accuracy of Volitional Motor Responses to Vibrotactile Stimuli

A Method for Evaluating Timeliness and Accuracy of Volitional Motor Responses to Vibrotactile Stimuli

Published on: August 2, 2016

Vehicle-Embedded Vibrotactile Haptic Feedback for Improved Driving Safety in Power Wheelchairs.

Sivadol Phamornsuwana, Sajid Nisar

IEEE Transactions on Neural Systems and Rehabilitation Engineering : a Publication of the IEEE Engineering in Medicine and Biology Society

|April 9, 2026

Summary

This study introduces a new haptic feedback system for power wheelchairs, significantly reducing collisions for users navigating in reverse or with limited vision. The system enhances safety and independence without requiring user training.

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Area of Science:

Rehabilitation Engineering
Human-Computer Interaction
Assistive Technology

Background:

Power wheelchair users encounter significant navigation challenges, particularly during reverse maneuvers and when visual scanning is limited.
Current feedback systems, such as joystick force feedback and wearable vibrotactile devices, exhibit limitations in information fidelity and user-friendliness.
These limitations hinder safe operation and user confidence in real-world environments.

Purpose of the Study:

To evaluate the effectiveness of a novel vehicle-embedded vibrotactile haptic feedback system for power wheelchair navigation.
To determine if this system improves driving safety under conditions of limited visibility or reverse operation.
To assess the impact of visual feedback availability on user performance and experience.

Main Methods:

A novel system was developed, integrating ultrasonic and infrared sensors with a vibrotactile feedback system embedded in the power wheelchair's cushion, armrests, and backrest.
Spatially mapped vibration cues were delivered to alert users to detected obstacles.
A study involving nine healthy participants and one visually impaired user was conducted to assess performance and safety.

Main Results:

A significant reduction in collisions was observed under visual constraints (p = 0.0313), indicating improved driving safety.
Effective navigation was achieved by participants without the need for prior training.
The system demonstrated potential for enhancing situational awareness and facilitating navigation.

Conclusions:

Vehicle-embedded vibrotactile haptic feedback significantly enhances situational awareness and driving safety for power wheelchair users.
This technology offers a promising solution for improving navigation capabilities, especially in challenging conditions.
The findings suggest increased user confidence and independence in real-world power wheelchair use.