A Wearable Haptic Device Based on Twisting Wire Actuators for Feedback of Tactile Pressure Information

Motamedi, M. Reza; Florant, David; Duchaine, Vincent

doi:10.20965/jrm.2015.p0419

Cited by 5 publications

References 34 publications

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A Multi-modal Haptic Armband for Finger-Level Sensory Feedback from a Prosthetic Hand

Berkovic,

Laganier,

Chappell

et al. 2022

Haptics: Science, Technology, Applications

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This paper presents the implementation and evaluation of three specific, yet complementary, mechanisms of haptic feedback—namely, normal displacement, tangential position, and vibration—to render, at a finger-level, aspects of touch and proprioception from a prosthetic hand without specialised sensors. This feedback is executed by an armband worn around the upper arm divided into five somatotopic modules, one per each finger. To evaluate the system, just-noticeable difference experiments for normal displacement and tangential position were carried out, validating that users are most sensitive to feedback from modules located on glabrous (hairless) skin regions of the upper arm. Moreover, users identifying finger-level contact using multi-modal feedback of vibration followed by normal displacement performed significantly better than those using vibration feedback alone, particularly when reporting exact combinations of fingers. Finally, the point of subjective equality of tangential position feedback was measured simultaneously for all modules, which showed promising results, but indicated that further development is required to achieve full finger-level position rendering.

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A Multi-modal Haptic Armband for Finger-Level Sensory Feedback from a Prosthetic Hand

Berkovic,

Laganier,

Chappell

et al. 2022

Haptics: Science, Technology, Applications

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Haptic feedback for improved robotic arm control during simple grasp, slippage, and contact detection tasks

Motamedi

Chossat

Roberge

et al. 2016

2016 IEEE International Conference on Robotics and Automation (ICRA)

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The Impact of Simultaneously Applying Normal Stress and Vibrotactile Stimulation for Feedback of Exteroceptive Information

Motamedi

Otis

Duchaine

2017

Journal of Biomechanical Engineering

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Commercially available prosthetic hands do not convey any tactile information, forcing amputees to rely solely on visual attention. A promising solution to this problem is haptics, which could lead to new prostheses in which tactile information is conveyed between the amputee and the artificial limb. However, the haptic feedback must be optimized so that amputees can use it effectively; and although several studies have examined how specific haptic feedback systems can transmit certain types of tactile information, there has not yet been much research on the effects of superposing two or more types of feedback at the same location, which might prove to be more effective than using a single type of feedback alone. This paper investigates how the simultaneous application of two different types of haptic feedback-vibration and normal stress-impacts the human sensory perception of each separate feedback type. These stimuli were applied to glabrous skin on the forearms of 14 participants. Our experiments tested whether participants experienced more accurate sensory perception, compared to vibration or normal stress alone, when vibration was applied at the same time as the normal stress, at either the same location, or at a different location 6 cm away. Results indicate that although participants' perception of the normal stress diminished when vibration was applied at the same location, the same combination improved their perception of the vibration. Apparently, vibration has a negative impact upon the ability to perceive normal stress, whether applied at the same or a different location; whereas the opposite is true for the effect of normal stress upon the perception of vibration.

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A Wearable Haptic Device Based on Twisting Wire Actuators for Feedback of Tactile Pressure Information

Cited by 5 publications

References 34 publications

A Multi-modal Haptic Armband for Finger-Level Sensory Feedback from a Prosthetic Hand

A Multi-modal Haptic Armband for Finger-Level Sensory Feedback from a Prosthetic Hand

Haptic feedback for improved robotic arm control during simple grasp, slippage, and contact detection tasks

The Impact of Simultaneously Applying Normal Stress and Vibrotactile Stimulation for Feedback of Exteroceptive Information

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