BROWSE

Related Researcher

Author's Photo

Kim, Sung-Phil
Brain-Computer Interface (BCI) Lab
Research Interests
  • Brain-computer interface, Statistical Signal Processing, Neural Code, Neuromarketing

ITEM VIEW & DOWNLOAD

Mid-Air Tactile Sensations Evoked by Laser-Induced Plasma: A Neurophysiological Study

Cited 0 times inthomson ciCited 0 times inthomson ci
Title
Mid-Air Tactile Sensations Evoked by Laser-Induced Plasma: A Neurophysiological Study
Author
Kim, Hyung-SikKim, Kyu BeomLee, Je-HyeopJung, Jin-JuKim, Ye-JinKim, Sung-PhilChoi, Mi-HyunYi, Jeong-HanChung, Soon-Cheol
Issue Date
2021-10
Publisher
FRONTIERS MEDIA SA
Citation
FRONTIERS IN NEUROSCIENCE, v.15, pp.733423
Abstract
This study demonstrates the feasibility of a mid-air means of haptic stimulation at a long distance using the plasma effect induced by laser. We hypothesize that the stress wave generated by laser-induced plasma in the air can propagate through the air to reach the nearby human skin and evoke tactile sensation. To validate this hypothesis, we investigated somatosensory responses in the human brain to laser plasma stimuli by analyzing electroencephalography (EEG) in 14 participants. Three types of stimuli were provided to the index finger: a plasma stimulus induced from the laser, a mechanical stimulus transferred through Styrofoam stick, and a sham stimulus providing only the sound of the plasma and mechanical stimuli at the same time. The event-related desynchronization/synchronization (ERD/S) of sensorimotor rhythms (SMRs) in EEG was analyzed. Every participant verbally reported that they could feel a soft tap on the finger in response to the laser stimulus, but not to the sham stimulus. The spectrogram of EEG evoked by laser stimulation was similar to that evoked by mechanical stimulation; alpha ERD and beta ERS were present over the sensorimotor area in response to laser as well as mechanical stimuli. A decoding analysis revealed that classification error increased when discriminating ERD/S patterns between laser and mechanical stimuli, compared to the case of discriminating between laser and sham, or mechanical and sham stimuli. Our neurophysiological results confirm that tactile sensation can be evoked by the plasma effect induced by laser in the air, which may provide a mid-air haptic stimulation method.</p>
URI
https://scholarworks.unist.ac.kr/handle/201301/54813
URL
https://www.frontiersin.org/articles/10.3389/fnins.2021.733423/full
DOI
10.3389/fnins.2021.733423
ISSN
1662-4548
Appears in Collections:
BME_Journal Papers
Files in This Item:
000707751400001.pdf Download

find_unist can give you direct access to the published full text of this article. (UNISTARs only)

Show full item record

qrcode

  • mendeley

    citeulike

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

MENU