Rendering Spatiotemporal Haptic Effects Via the Physics of Waves in the Skin

Dandu, Bharat; Shao, Yitian; Visell, Yon

doi:10.1109/toh.2020.3029768

Cited by 10 publications

(16 citation statements)

References 36 publications

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“…The frequency dependence of biomechanical filtering arises from the viscoelastic characteristics of soft tissues 15 , as well as the skeletal structure of the hand. To more systematically characterize these effects, we examined variations in skin oscillations evoked by sinusoidal stimuli of different frequencies, with amplitudes normalized to account for the relative mobility of the skin at different frequencies (see Methods).…”

Section: Spatial Dependence Of Biomechanical Filteringmentioning

confidence: 99%

“…For example, textures can be discriminated even under anesthesia of the hand 6 , mediated by skin oscillations reaching the wrist 3 . Furthermore, the spatial extent of evoked skin oscillations depends on stimulation frequency, an effect that can be exploited to design tactile inputs that evoke percepts with varying spatial extent 15 . Accounting for the diverse response characteristics of PC populations may shed light on their involvement in perception and behavior in other settings.…”

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confidence: 99%

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Biomechanical filtering supports tactile encoding efficiency in the human hand

Tummala,

Reardon,

Dandu

et al. 2023

Preprint

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When the hand touches a surface, the ensuing contact elicits skin oscillations that travel throughout the hand1–4, driving responses in numerous exquisitely sensitive Pacinian corpuscle neurons (PCs)5–8. Although the tuning properties of individual PCs are well-documented9–13, they have been characterized using stimuli applied adjacent to the receptor location. Such experiments are insensitive to the modulating influence of biomechanical filtering, which can significantly alter skin oscillations as they travel through the hand’s soft tissues14–16. Here, we used an integrated approach combining vibrometry imaging and computer simulation to characterize the effects of biomechanical filtering on evoked spiking activity in whole-hand PC populations. We observed complex distance- and frequency-dependent patterns of biomechanical transmission arising from the interplay of tissue mechanics and hand morphology. This source of modulation altered the response properties and spike timing of PCs, diversifying evoked activity in whole-hand PC populations. Together, these effects enhanced information encoding efficiency. These findings suggest that the biomechanics of the hand furnishes a pre-neuronal mechanism that facilitates efficient tactile processing.

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Section: Spatial Dependence Of Biomechanical Filteringmentioning

confidence: 99%

mentioning

confidence: 99%

Biomechanical filtering supports tactile encoding efficiency in the human hand

Tummala,

Reardon,

Dandu

et al. 2023

Preprint

Self Cite

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“…We recently demonstrated how the properties of this physical process can be exploited in previously unanticipated ways in order to design efficient methods of haptic feedback for virtual reality. [ 86,87 ] We first used theoretical analyses and optical vibrometry measurements to show how vibration stimuli applied at the fingertip elicit vibrations that travel as elastic waves proximally to the hand (Figure 2D). By analyzing the resulting data, we demonstrated that, similar to data we captured during natural touch interactions, frequency‐dependent damping in the skin causes the propagation distances to decrease rapidly with increasing frequency of stimulation.…”

Section: Skin Mechanics and Dynamics: Identifying Opportunities For Haptic Engineeringmentioning

confidence: 99%

“…We used these methods to design several techniques for rendering evocative haptic effects in virtual reality (Figure 2E). [ 87 ] This research indicates how the analysis and characterization of phenomena arising from the soft mechanics of the body can furnish insight into mechanisms of touch perception, and new strategies for the design that can overcome daunting challenges, such as the extreme requirements in spatial and temporal resolution, and thus dimensionality, that arise in the engineering of high‐fidelity technologies for haptic virtual reality.…”

Section: Skin Mechanics and Dynamics: Identifying Opportunities For Haptic Engineeringmentioning

confidence: 99%

Haptic Perception, Mechanics, and Material Technologies for Virtual Reality

Biswas

Visell

2021

Adv Funct Materials

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Emerging virtual and augmented reality technologies can transform human activities in myriad domains, lending tangible, embodied form to digital data, services, and information. Haptic technologies will play a critical role in enabling human to touch and interact with the contents of these virtual environments. The immense variety of skilled manual tasks that humans perform in real environments are only possible through the coordination of touch sensation, perception, and movement that together comprise the haptic modality. Consequently, many research groups are vigorously investigating haptic technologies for virtual reality. A longstanding research goal in this area has been to create haptic interfaces that allow their users to touch and feel plausibly realistic virtual objects. In this progress report, the perspective on this unresolved research challenge is shared, guided by the observation that no technologies can even approximately match the capabilities of the human sense of touch. Factors that have it challenging to engineer haptic technologies for virtual reality, including the extraordinary spatial and temporal tactile acuity of the skin, and the complex interplay between continuum mechanics, haptic perception, and interaction are identified. The perspective on how these challenges may be overcome through convergent research on haptic perception, mechanics, electronics, and material technologies is presented.

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“…Through adjusting the time-domain characteristics of vibration feedback such as the frequency, amplitude and duration time [4], complex vibration information can be transmitted by the single vibration source. The modulation process is similar to that of radio wave and sound wave, and vibration tactile display was originally applied to the realization of somatosensory music and vibroacoustic therapy [17].…”

Section: Vibration Feedback Devicementioning

confidence: 99%

Electromagnetic Vibration Tactile Feedback for Biological and Artificial Wave Signals

Yuan

2021

Adjunct Proceedings of the 2021 ACM International Joint Conference on Pervasive and Ubiquitous Computing and Proceedings of The

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As one of the important senses of Virtual Reality and Augmented Reality, tactile feedback can provide users with touch sensation such as shape, quality and texture of contacting objects, thus enhancing the immersion and interaction of virtual environments.Here we present an electromagnetic vibration device, which can transmit tactile information by displaying programmable biological or artificial wave signals. This device uses the H-bridge circuit to drive the coil with alternating current to excite a varying spatial magnetic field, thereby generating attractive and repulsive forces alternately on the magnetic stick to form vibration feedback. We display biological vibration signals like heartbeat and sound waves with this device, and inertial sensors are used to prove the accuracy of vibration generation by recording the stick's movement. In addition, several vibration modes are designed according to the human tactile perception characteristics, and recognition experiments shows that they can be distinguished correctly for delivering different messages.

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Rendering Spatiotemporal Haptic Effects Via the Physics of Waves in the Skin

Cited by 10 publications

References 36 publications

Biomechanical filtering supports tactile encoding efficiency in the human hand

Biomechanical filtering supports tactile encoding efficiency in the human hand

Haptic Perception, Mechanics, and Material Technologies for Virtual Reality

Electromagnetic Vibration Tactile Feedback for Biological and Artificial Wave Signals

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