Brain process for perception of the “out of the body” tactile illusion for virtual object interaction

Hye Jin Lee, Jaedong Lee, Chi Jung Kim, Jeonghyun Kim, Eun Soo Kim, Mincheol Whang

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

“Out of the body” tactile illusion refers to the phenomenon in which one can perceive tactility as if emanating from a location external to the body without any stimulator present there. Taking advantage of such a tactile illusion is one way to provide and realize richer interaction feedback without employing and placing actuators directly at all stimulation target points. However, to further explore its potential, it is important to better understand the underlying physiological and neural mechanism. As such, we measured the brain wave patterns during such tactile illusion and mapped out the corresponding brain activation areas. Participants were given stimulations at different levels with the intention to create veridical (i.e., non-illusory) and phantom sensations at different locations along an external hand-held virtual ruler. The experimental data and analysis indicate that both veridical and illusory sensations involve, among others, the parietal lobe, one of the most important components in the tactile information pathway. In addition, we found that as for the illusory sensation, there is an additional processing resulting in the delay for the ERP (event-related potential) and involvement by the limbic lobe. These point to regarding illusion as a memory and recognition task as a possible explanation. The present study demonstrated some basic understanding; how humans process “virtual” objects and the way associated tactile illusion is generated will be valuable for HCI (Human-Computer Interaction).

Original languageEnglish
Pages (from-to)7913-7932
Number of pages20
JournalSensors (Switzerland)
Volume15
Issue number4
DOIs
Publication statusPublished - 2015 Apr 1

Fingerprint

illusions
brain
Brain
Human computer interaction
stimulation
Actuators
lobes
Chemical activation
interactions
Feedback
Data storage equipment
Brain Waves
Phantom Limb
Processing
Parietal Lobe
Touch
Evoked Potentials
Hand
actuators
activation

Keywords

  • EEG
  • ERP
  • Funneling
  • Illusory feedback
  • Neural mechanism
  • Phantom sensation
  • Vibro-tactile feedback

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Atomic and Molecular Physics, and Optics
  • Analytical Chemistry
  • Biochemistry

Cite this

Brain process for perception of the “out of the body” tactile illusion for virtual object interaction. / Lee, Hye Jin; Lee, Jaedong; Kim, Chi Jung; Kim, Jeonghyun; Kim, Eun Soo; Whang, Mincheol.

In: Sensors (Switzerland), Vol. 15, No. 4, 01.04.2015, p. 7913-7932.

Research output: Contribution to journalArticle

Lee, Hye Jin ; Lee, Jaedong ; Kim, Chi Jung ; Kim, Jeonghyun ; Kim, Eun Soo ; Whang, Mincheol. / Brain process for perception of the “out of the body” tactile illusion for virtual object interaction. In: Sensors (Switzerland). 2015 ; Vol. 15, No. 4. pp. 7913-7932.
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