Laser-induced thermoelastic effects can evoke tactile sensations

Title
Laser-induced thermoelastic effects can evoke tactile sensations
Authors
정승준
Keywords
INFRARED DIODE-LASER; BIOLOGICAL TISSUE; PAIN PERCEPTION; MERKEL CELLS; STIMULATION; PRESSURE; ABLATION; HUMANS; ACTIVATION; RESPONSES
Issue Date
2015-06
Publisher
NATURE PUBLISHING GROUP
Citation
SCIENTIFIC REPORTS, v. 5, Page. 1-16
Abstract
Humans process a plethora of sensory information that is provided by various entities in the surrounding environment. Among the five major senses, technology for touch, haptics, is relatively young and has relatively limited applications largely due to its need for physical contact. In this article, we suggest a new way for non-contact haptic stimulation that uses laser, which has potential advantages such as mid-air stimulation, high spatial precision, and long working distance. We demonstrate such tactile stimulation can be enabled by laser-induced thermoelastic effects by means of physical and perceptual studies, as well as simulations. In the physical study, the mechanical effect of laser on a human skin sample is detected using low-power radiation in accordance with safety guidelines. Limited increases (˂ similar to 2.5 degrees C) in temperature at the surface of the skin, examined by both thermal camera and the Monte Carlo simulation, indicate that laser does not evoke heat-induced nociceptive sensation. In the human EEG study, brain responses to both mechanical and laser stimulation are consistent, along with subjective reports of the non-nociceptive sensation of laser stimuli.
URI
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4603782/http://hdl.handle.net/20.500.11754/25682
ISSN
2045-2322
DOI
http://dx.doi.org/10.1038/srep11016
Appears in Collections:
COLLEGE OF MEDICINE[S](의과대학) > MEDICINE(의학과) > Articles
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