Impact of hand and object colors on object temperature perception

Ho, Hwai‐Chung; Iwai, Daisuke; Yoshikawa, Yuki; Watanabe, Junji; Nishida, Shin’ya

doi:10.1080/23328940.2015.1078926

Cited by 3 publications

(2 citation statements)

References 12 publications

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“…Moseley and Arntz have shown that a noxious stimulus, when associated with a red cue, hurts more and is actually perceived as hotter, whereas the opposite is true when associated with a blue cue (Moseley and Arntz, 2007). In a study, more closely related to our's, by Ho et al (2014), the WDT was found to be lowered when the color of participants' real hand was changed to red by a projector. Interestingly, a blue hand increased WDT.…”

Section: Discussionmentioning

confidence: 86%

Thermal pain and detection threshold modulation in augmented reality

Eckhoff

Sandor

Cheing

et al. 2022

Front. Virtual Real.

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Augmented Reality (AR) overlays computer-generated visual, auditory or other sensory information onto the real world. Due to recent technological advancement in the field, it can become increasingly difficult for the user to differentiate between sensory information coming from real and virtual objects, leading to interesting perceptual phenomena. For example, an AR experience in which users can experience their own hands in flames has been shown to elicit heat illusions on the affected hands. In this study, we investigate the potential that AR has for top-down modulation of pain and thermal perception. We assessed thermal pain and detection thresholds on the participant’s right hand while covering it with realistic virtual flames. We compared this experience to a baseline condition with no additional stimuli. We also report on a condition in which the hand is covered by a blue fluid not instantly associated with fire. We found that experiencing a virtual burning hand induces analgesic as well hyperalgesic effects as participants begin to feel heat related pain at lower temperatures and cold related pain at higher temperatures. The experience also impacts significantly on the lowest temperature at which participants starts perceiving warmth. The blue fluid do not affect the thresholds corresponding to the baseline condition. Our research thus confirms previous experiments showing that pain and thermal perception can be manipulated by by AR, while providing quantitative results on the magnitude of this effect.

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Section: Discussionmentioning

confidence: 86%

Thermal pain and detection threshold modulation in augmented reality

Eckhoff

Sandor

Cheing

et al. 2022

Front. Virtual Real.

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“…A similar illusion has also been reported for other modalities. For example, blue objects, which are perceived as looking colder, are perceived as being warmer when they are actually touched (Ho et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

Weight illusion by presenting vibration to the fingertip

Kim¹,

Okamoto²,

Akiyama³

et al. 2022

Front. Virtual Real.

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It is difficult for humans to perceive weight accurately, because the perception of weight is produced by the process of multisensory integration. This implies that, by manipulating certain factors, the weight of an object could be perceived differently from the actual weight. Here, the effects of vibration on weight perception were investigated using behavioral tests and questionnaires. As a behavioral test, from a number of identically appearing non-vibrating boxes of different weights, participants had to select a box that they perceived to be of the same weight as a vibrating box. They were also asked whether vibration affected the perceived weight of the box. Even though they reported that vibration created an illusion of weight, the results of the behavioral test did not show a statistically significant effect of vibration on perceived weight. Furthermore, we investigated how the frequency of vibration affected the illusion and found that the weight illusion requires smaller acceleration of vibration at lower frequencies, such as 30 Hz. The illusion was more intense at lower frequencies than at higher frequencies, such as 200 and 300 Hz. Thus, this study demonstrated that vibrotactile stimuli presented to the fingertips produce a weight illusion: vibrating objects are perceived to feel heavier. Even though the principles of this illusion are still unknown, the effect is concrete, and our approach allows easy implementation in virtual reality applications.

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Material recognition based on thermal cues: Mechanisms and applications

2017

Temperature

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Some materials feel colder to the touch than others, and we can use this difference in perceived coldness for material recognition. This review focuses on the mechanisms underlying material recognition based on thermal cues. It provides an overview of the physical, perceptual, and cognitive processes involved in material recognition. It also describes engineering domains in which material recognition based on thermal cues have been applied. This includes haptic interfaces that seek to reproduce the sensations associated with contact in virtual environments and tactile sensors aim for automatic material recognition. The review concludes by considering the contributions of this line of research in both science and engineering.

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Impact of hand and object colors on object temperature perception

Cited by 3 publications

References 12 publications

Thermal pain and detection threshold modulation in augmented reality

Thermal pain and detection threshold modulation in augmented reality

Weight illusion by presenting vibration to the fingertip

Material recognition based on thermal cues: Mechanisms and applications

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