Development of a Polymer-Based MEG-Compatible Vibrotactile Stimulator for Studying Neuromagnetic Somatosensory Responses
| Autor: | Sang-Youn Kim, Seong-min Hwang, Tae-Heon Yang, Won-Hyeong Park, Kiwoong Kim, Hyukchan Kwon, Min-Young Kim |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
magnetoencephalography
Materials science General Computer Science Magnetic noise Vibrotactile stimulation Somatosensory system 03 medical and health sciences 0302 clinical medicine medicine General Materials Science New device vibrotactile perception Electrical and Electronic Engineering 030304 developmental biology PVC gel actuator 0303 health sciences medicine.diagnostic_test Contralateral hemisphere General Engineering Magnetoencephalography Vibrotactile stimulus lcsh:Electrical engineering. Electronics. Nuclear engineering Mechanoreceptors lcsh:TK1-9971 030217 neurology & neurosurgery Biomedical engineering |
| Zdroj: | IEEE Access, Vol 8, Pp 9235-9245 (2020) |
| ISSN: | 2169-3536 |
| Popis: | Vibrotactile technology has been gaining increasing interest for effective human-computer communication in various applications. In addition to psychophysical approaches commonly used to study tactile vibrations, neurocognitive responses to vibrotactile stimuli can provide new insights into mechanisms underlying human vibrotactile perception. In this study, we developed a magnetoencephalography (MEG)-compatible vibrotactile stimulation device based on a polyvinyl chloride (PVC) gel actuator to study neuromagnetic somatosensory responses. A symmetric, double-layered PVC gel structure was applied to minimize the magnetic noise from the actuator. The device was used to generate sinusoidal stimuli at high frequencies to activate mechanoreceptors responsible for high-frequency vibrations greater than 50 Hz, and this device showed very little variability in stimulation onset time from the displacement measurements. We successfully observed vibrotactile-evoked magnetic fields by analyzing whole-head MEG data recorded during the high-frequency vibrotactile stimulation of the fingertips. Prominent peak responses were observed at approximately 56 ms (M50) in the contralateral hemisphere and at approximately 100 ms (M100) in both hemispheres. We identified the activation of contralateral primary somatosensory areas as a source of the vibrotactile M50 response. These results demonstrate the feasibility of using our new device to study vibrotactile perception with neuromagnetic imaging methods. |
| Databáze: | OpenAIRE |
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