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Related Experiment Video

Updated: Feb 24, 2026

A Method for Evaluating Timeliness and Accuracy of Volitional Motor Responses to Vibrotactile Stimuli
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Portable haptic device for lower limb amputee gait feedback: Assessing static and dynamic perceptibility.

M A B Husman, H F Maqbool, M I Awad

    IEEE ... International Conference on Rehabilitation Robotics : [Proceedings]
    |August 18, 2017
    PubMed
    Summary

    This study introduces a wearable haptic device to improve limb awareness for lower limb amputees. The device provides tactile feedback, enhancing proprioception and potentially reducing fall risk during ambulation.

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    Area of Science:

    • Biomedical Engineering
    • Rehabilitation Technology
    • Human-Computer Interaction

    Background:

    • Lower limb amputees experience reduced mobility and increased fall risk due to loss of joints and sensory pathways.
    • Prosthetic devices aim to restore function but often lack sensory feedback, leading to high visual dependency.
    • Haptic feedback offers a potential solution to enhance limb position awareness during ambulation.

    Purpose of the Study:

    • To develop and evaluate a wireless wearable skin stretch haptic device for lower limb amputees.
    • To assess the perceptibility of haptic stimuli during static and dynamic conditions.
    • To investigate the influence of stretch magnitude on sensory perception.

    Main Methods:

    • A wireless wearable skin stretch haptic device was designed for the thigh region.
    • The device's movement profile was characterized.
    • Preliminary testing was conducted with able-bodied participants and an above-knee amputee in static and dynamic modes.

    Main Results:

    • Perceptibility of haptic stimuli increased with greater stretch magnitude.
    • Higher stretch magnitudes were required for accurate perception during walking compared to static standing.
    • Increased muscle movement and motor skill demands during walking likely contributed to the need for higher stimulus intensity.

    Conclusions:

    • The developed haptic device shows promise for providing sensory feedback to lower limb amputees.
    • Haptic feedback can enhance awareness of limb position, potentially improving gait stability.
    • Further research is needed to optimize device parameters for effective use during dynamic activities like walking.