Haptic Illusions Induced by Moving Line Stimuli

Mochiyama, Hiromi; Sano, Akihito; Takesue, Naoyuki; Kikuuwe, Ryo; Fujita, Kazuyuki; Fukuda, Shinji; Marui, Kojiro; Fujimoto, Hideo

doi:10.1109/whc.2005.69

Cited by 24 publications

(30 citation statements)

References 4 publications

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“…We mentioned that VHI occurred not only when touching a wire grid but also two adjacent wires [12]. Based on the authors' subjective judgment, VHI sensation occurring with two parallel wires is stronger than that with a wire grid.…”

Section: Psychophysical Experiments a Experimental Apparatusmentioning

confidence: 99%

“…The strength of the velvetiness sensation generated by VHI depends on several parameters of stimulation. Mochiyama et al concluded that VHI was sensed in the area between two wires on the surfaces of joined hands [12]. Ohka et al found that the intensity of VHI depended strongly on the distance between the two wires, so that increasing wire distance led to increasing strength of VHI perception [13].…”

Section: Introductionmentioning

confidence: 99%

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Investigation of VHI Affected by the Density of Mechanoreceptive units for Virtual Sensation

Rajaei

Ohka

Miyaoka

et al. 2013

International Journal on Smart Sensing and Intelligent Systems

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Section: Psychophysical Experiments a Experimental Apparatusmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Investigation of VHI Affected by the Density of Mechanoreceptive units for Virtual Sensation

Rajaei

Ohka

Miyaoka

et al. 2013

International Journal on Smart Sensing and Intelligent Systems

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“…We prepared frames for the Si and Wi conditions by manipulating the distance between the two vertical wires based on previous psychophysical findings (Mochiyama et al, 2005;Ohka et al, 2010;Rajaei et al, 2012). More specifically, the intensity of the illusion is FIGURE 1 Experimental design.…”

Section: Vhi Conditionsmentioning

confidence: 99%

Brain networks underlying conscious tactile perception of textures as revealed using the velvet hand illusion

Rajaei

Aoki

Takahashi

et al. 2018

Human Brain Mapping

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Humans are adept at perceiving textures through touch. Previous neuroimaging studies have identified a distributed network of brain regions involved in the tactile perception of texture. However, it remains unclear how nodes in this network contribute to the tactile awareness of texture. To examine the hypothesis that such awareness involves the interaction of the primary somatosensory cortex with higher order cortices, we conducted a functional magnetic resonance imaging (fMRI) study utilizing the velvet hand illusion, in which an illusory velvet-like surface is perceived between the hands. Healthy participants were subjected to a strong illusion, a weak illusion, and tactile perception of real velvet. The strong illusion induced greater activation in the primary somatosensory cortex (S1) than the weak illusion, and increases in such activation were positively correlated with the strength of the illusion. Furthermore, both actual and illusory perception of velvet induced common activation in S1. Psychophysiological interaction (PPI) analysis revealed that the strength of the illusion modulated the functional connectivity of S1 with each of the following regions: the parietal operculum, superior parietal lobule, precentral gyrus, insula, and cerebellum. The present results indicate that S1 is associated with the conscious tactile perception of textures, which may be achieved via interactions with higher order somatosensory areas.

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“…The following are the minimum conditions for VHI to be felt: (1) the use of both hands, (2) the presence of at least two wires either parallel or perpendicular to the fingers and (3) rubbing the hands against the wires (Mochiyama et al, 2005).…”

Section: Simulating Vhimentioning

confidence: 99%

“…Recently a set of psychophysical experiments studied the "haptic versions" of these illusions (Scilingo et al, 2008). (Mochiyama et al, 2005) and the fishbone and comb illusions (Hayward, 2008).…”

Section: Introductionmentioning

confidence: 99%

Response of SAI Afferents May Play a Role in the Perception of Velvet Hand Illusion

Chami

Ohka

Kawabe

et al. 2010

Journal of Computer Science

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Problem statement:We revealed the reason behind a haptic illusion called the Velvet Hand Illusion (VHI) by FEM analysis. In VHI, a person rubs his/her hands together on both sides of wires strung through a frame and produces the sensation of rubbing a very smooth and soft surface like velvet. We focus on VHI to determine the specifications of an actuator for a tactile display enhanced by VHI. Approach: A simulated fingertip was modeled under the same contact condition that an actual finger was believed to undergo when under VHI. We collected the simulated responses of a number of SAI afferents, which were responsible for detecting the edges, to relate them to the mechanism of the illusion. Results: Even with a simple model that treats only one finger, we noticed a considerable difference between the responses of a number of SAI receptors compared with that of a fingertip touching wires without the effect of the opposing finger. The SAI responses for the VHI case are less (some receptors' response is up to 50% less) than those for a finger touching the wires, which corresponds to a decrease of the perception of the wires. Conclusion/Recommendations: SAI might play a role in the mechanism of the VHI illusion. This study could benefit the development of a haptic display that utilizes the illusion and makes a person experience the same feeling using the proposed display.

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Haptic Illusions Induced by Moving Line Stimuli

Cited by 24 publications

References 4 publications

Investigation of VHI Affected by the Density of Mechanoreceptive units for Virtual Sensation

Investigation of VHI Affected by the Density of Mechanoreceptive units for Virtual Sensation

Brain networks underlying conscious tactile perception of textures as revealed using the velvet hand illusion

Response of SAI Afferents May Play a Role in the Perception of Velvet Hand Illusion

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