Evaluating the Effect of Stimulus Duration on Vibrotactile Cue Localizability With a Tactile Sleeve

Macklin, Alix S.; Yau, Jeffrey M.; O’Malley, Marcia K.

doi:10.1109/toh.2021.3079727

Cited by 7 publications

(3 citation statements)

References 33 publications

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“…This finding suggests that this illusion appears only on the arms, not on the hands. Numerous studies have reported anisotropic distortion in the perceived space in relation to touch [6][7][8][9][10][11][12][13][14][19][20][21] . Almost all of the previous studies have discussed this point by examining the difference in perceived size, distance, and location when the stimuli were presented along the long axis and along the short axis.…”

Section: Discussionmentioning

confidence: 99%

“…Indeed, one study reported the difference in sensitivity due to the skin site on the arm-vibration intensity discrimination was better for the thumb side than for the little finger side 27 . Other studies reported differences in localization acuity at different locations along the arm 5,8 . This point was not verified in the previous study 4 , where the stimulus angle uniquely determined which skin site the stimulus would be presented to (e.g., inwardly inclined stimuli always stimulated the local skin site relatively close to the thumb, while outwardly inclined stimuli stimulated the local skin site near the little finger).…”

Section: Effects Of Skin In Specific Locationsmentioning

confidence: 97%

“…a crawling insect) upon the skin surface and of guidance cues for reaching movements (to brush away the insect). " Not many studies on the arm have been conducted, but some reported the deviation of the spatial representation of the stimulus on the arm from the actual stimulus 4,[6][7][8][9] . Although such deviation from the Euclidean metric of stimulus representation has been also reported for the hand [10][11][12][13][14] , they differ in occurrence probability and degree from those on the arm.…”

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confidence: 99%

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Anisotropic distortion in the perceived direction of motion on the arm

Kuroki¹

2023

Sci Rep

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Skin covers the entire body, and its thickness and distribution of mechanoreceptors vary markedly across body parts. It has been shown that the brain is not able to fully compensate for such anisotropy, and as a result, the representational space of touch differs depending on which parts the stimulus is applied to. Here, by contrasting the hand and arm, we investigated the difference in perceived motion. Using a large-area braille display, we were able to present precisely controlled touchable motion stimuli with randomizing stimulus trajectories and varying the size. We found a new perceptual illusion in which the motion direction of stimuli perceived on the arm is rotated regionally, or even flipped. In particular, obliquely moving stimuli that move toward the distal radial are perceived as move toward the proximal radial, and stimuli that move toward the proximal ulnar are perceived as move toward the distal ulnar. This illusion was not observed on the palm, regardless of compensation for the stimulus size. Current study adds a clear example of how presenting the same motion stimuli to different body parts results in a different perception, emphasizing that the perceived tactile space is not uniform and needs to be examined in detail.

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Section: Discussionmentioning

confidence: 99%

Section: Effects Of Skin In Specific Locationsmentioning

confidence: 97%

mentioning

confidence: 99%

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Anisotropic distortion in the perceived direction of motion on the arm

Kuroki¹

2023

Sci Rep

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Effect of Focus Direction and Agency on Tactile Perceptibility

Zook

O’Malley

2022

Haptics: Science, Technology, Applications

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Prior research has shown that the direction of a user’s focus affects the perception of tactile cues. Additionally, user agency over touch stimulation has been shown to affect tactile perception. With the development of more complicated haptic and multi-sensory devices, simple tactile cues are rarely used in isolation and the effect of focus direction and of user agency on the perception of a sequence of tactile cues is unknown. In this study, we investigate the effect of both of these variables, focus direction and agency, on the perception of a cue sequence. We found that the direction of user focus and user sense of agency over tactile stimulation both had a significant effect on the accurate perception of a cue sequence. These results are presented in consideration for developing better haptic devices that account for users’ focus on and control over these devices.

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