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Related Experiment Video

Updated: Jan 27, 2026

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Midair Haptic Pursuit.

Azuma Yoshimoto, Keisuke Hasegawa, Yasutoshi Makino

    IEEE Transactions on Haptics
    |March 26, 2019
    PubMed
    Summary
    This summary is machine-generated.

    Human hands can track moving haptic stimuli in midair, similar to how eyes track objects visually. This hand motion tracking has a velocity limit of 10 cm/s and potential applications in assistive navigation.

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    Area of Science:

    • Human-computer interaction
    • Haptics
    • Neuroscience
    • Robotics

    Background:

    • Smooth pursuit eye movement enables humans to track visual objects.
    • The tactile system's ability to track dynamic stimuli is less understood.
    • Noncontact ultrasound tactile displays offer novel ways to deliver haptic feedback.

    Purpose of the Study:

    • To investigate if the human hand can track midair haptic stimuli.
    • To determine the velocity limits of this hand-based motion tracking.
    • To explore potential applications of this haptic tracking ability.

    Main Methods:

    • A noncontact ultrasound tactile display was used to generate a moving point vibration on the palm.
    • Participants were instructed to follow the perceived motion of the haptic stimulus.

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  • The maximum trackable velocity for stimuli moving parallel to the palm was measured, starting from zero initial velocity.

    • Main Results:

    • The human palm demonstrated an ability to track the continuous movement of a midair haptic stimulus.
    • The trackable velocity limit for motion parallel to the palm was found to be 10 cm/s.
    • This tracking ability was observed when the initial velocity was zero.

    Conclusions:

    • The human hand possesses a haptic motion tracking capability analogous to smooth pursuit eye movements.
    • This finding opens possibilities for non-device-dependent haptic guidance systems.
    • Potential applications include navigation aids for the visually impaired and evacuation systems.