Vibrotactile Stimulation to Increase and Decrease Texture Roughness

Asano, Shuhei; Okamoto, Shogo; Yamada, Yoji

doi:10.1109/thms.2014.2376519

Cited by 43 publications

(34 citation statements)

References 18 publications

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“…Our method has advantages in terms of contents consistency, that is, it does not need to change the appearance of texture surfaces, in contrast to the studies modifying the texture appearance [13,21]. Also, our method does not need additional vibrational stimuli in contrast to "signal-based approach" such as [3,14]. It is expected that our method and "signal-based approach" can be used together to modulate fine roughness perception, but it is a future study.…”

Section: Discussionmentioning

confidence: 99%

“…Hollins et al [14] showed that the vibrating surface was judged by users to be smoother less often than surfaces where no vibration was presented. Asano et al [3] introduced a method of applying additional vibrational stimuli on users' fingers to modify roughness perception. This signal-based approach made full use of vibrotactile signals to modify perception, and it succeeded in displaying rougher textured surface.…”

Section: Introductionmentioning

confidence: 99%

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Modulating Fine Roughness Perception of Vibrotactile Textured Surface using Pseudo-haptic Effect

Ujitoko

Ban

Hirota

2019

IEEE Trans. Visual. Comput. Graphics

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Fig. 1. Our proposed method modulates the fine roughness perception of vibrotactile textured surfaces using pseudo-haptic effect. Our user study showed that users felt the surface rougher in response to a parameter configuration of visual feedback.Abstract-Playing back vibrotactile signals through actuators is commonly used to simulate tactile feelings of virtual textured surfaces. However, there is often a small mismatch between the simulated tactile feelings and intended tactile feelings by tactile designers. Thus, a method of modulating the vibrotactile perception is required. We focus on fine roughness perception and we propose a method using a pseudo-haptic effect to modulate fine roughness perception of vibrotactile texture. Specifically, we visually modify the pointer's position on the screen slightly, which indicates the touch position on textured surfaces. We hypothesized that if users receive vibrational feedback watching the pointer visually oscillating back/forth and left/right, users would believe the vibrotactile surfaces more uneven. We also hypothesized that as the size of visual oscillation is getting larger, the amount of modification of roughness perception of vibrotactile surfaces would be larger. We conducted user studies to test the hypotheses. Results of first user study suggested that users felt vibrotactile texture with our method rougher than they did without our method at a high probability. Results of second user study suggested that users felt different roughness for vibrational texture in response to the size of visual oscillation. These results confirmed our hypotheses and they suggested that our method was effective. Also, the same effect could potentially be applied to the visual movement of virtual hands or fingertips when users are interacting with virtual surfaces using their hands.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Modulating Fine Roughness Perception of Vibrotactile Textured Surface using Pseudo-haptic Effect

Ujitoko

Ban

Hirota

2019

IEEE Trans. Visual. Comput. Graphics

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“…A solenoid inside the stylus applies a braking force to the ball for friction rendering. A similar approach using a wearable vibrotactile ring has been presented in [1,21]. Minamizawa et al [23] increased the perceived weight of tangible objects using skin stretch stimuli provided by a wearable device.…”

Section: Related Work and Current Limitationsmentioning

confidence: 99%

Enhancing the Stiffness Perception of Tangible Objects in Mixed Reality Using Wearable Haptics

Tinguy

Pacchierotti

Marchal

et al. 2018

2018 IEEE Conference on Virtual Reality and 3D User Interfaces (VR)

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This paper studies the combination of tangible objects and wearable haptics for improving the display of stiffness sensations in virtual environments. Tangible objects enable to feel the general shape of objects, but they are often passive or unable to simulate several varying mechanical properties. Wearable haptic devices are portable and unobtrusive interfaces able to generate varying tactile sensations, but they often fail at providing convincing stiff contacts and distributed shape sensations. We propose to combine these two approaches in virtual and augmented reality (VR/AR), becoming able of arbitrarily augmenting the perceived stiffness of real/tangible objects by providing timely tactile stimuli at the fingers. We developed a proof-of-concept enabling to simulate varying elasticity/stiffness sensations when interacting with tangible objects by using wearable tactile modules at the fingertips. We carried out a user study showing that wearable haptic stimulation can well alter the perceived stiffness of real objects, even when the tactile stimuli is not delivered at the contact point. We illustrated our approach both in VR and AR, within several use cases and different tangible settings, such as when touching surfaces, pressing buttons and pistons, or holding an object. Taken together, our results pave the way for novel haptic sensations in VR/AR by better exploiting the multiple ways of providing simple, unobtrusive, and low-cost haptic displays.

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“…1. In addition, some studies compare different patterns on additional scales such as cognitive scales of continuity [25], smoothness [26], strength and rhythm [27], or speed [28]. Due to the multiple possibilities for modulating haptic patterns, many studies choose to keep some parameters fixed, while concentrating on the effects of others, which often results in varying conclusions.…”

Section: Tactile Stimulation Literaturementioning

confidence: 99%

A Vibrotactile Alarm System for Pleasant Awakening

Κορρές¹,

Jensen

Park³

et al. 2018

IEEE Trans. Haptics

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Abstract-There has been a vast development of personal informatics devices combining sleep monitoring with alarm systems, in order to find an optimal time to awaken a sleeping person in a pleasant way. Most of these systems implement auditory feedback as the alarm signal, which is not always pleasant and may disturb other sleepers in the same space. In this paper, we present an adaptive alarm system that detects sleeping cycles and triggers the alarm signal during shallow sleep, in order to minimize sleep inertia. Since tactile sensation is associated with positive valence, vibrotactile stimulation is investigated as a silent alarm to enhance pleasant awakening. Three modulation techniques to render the tactile stimuli for pleasant awakening are considered, namely simultaneous, continuous, and successive stimulation. Two experimental studied are conducted. Experiment 1 studied exogenous attention towards tactile stimulation in a multimodal scenario (involving visual and haptic interactions) with fully awake individuals. Results from the attention task and the subjective valence rating suggest that the vibrotactile stimulation should be based on the continuous modulation, since this not only is very perceivable but also associated with positive attention. Experiment 2 evaluated the user experience with tactile stimulation patterns during sleep. Results confirmed the findings of experiment 1. Continuous modulation was rated highest for pleasant yet arousing sleep-awake transition.

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Vibrotactile Stimulation to Increase and Decrease Texture Roughness

Cited by 43 publications

References 18 publications

Modulating Fine Roughness Perception of Vibrotactile Textured Surface using Pseudo-haptic Effect

Modulating Fine Roughness Perception of Vibrotactile Textured Surface using Pseudo-haptic Effect

Enhancing the Stiffness Perception of Tangible Objects in Mixed Reality Using Wearable Haptics

A Vibrotactile Alarm System for Pleasant Awakening

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