Effects of transcranial magnetic stimulation and transcranial direct current stimulation on EEG alpha wave

D. Puanhvuan, K. Nojima, Y. Wongsawat, K. Iramina

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Repetitive transcranial magnetic stimulation (rTMS) and transcranial direct current stimulation (tDCS) are painless technique for nerve stimulation. It's possible to inhibit or excite neuron activity. For EEG alpha wave (8-14 Hz), it was affected to various brain activities. But, the most evident change was found when eyes closed and eyes opened. This study aims to investigate the effects of rTMS and tDCS on alpha wave during eyes closed and eyes opened. Both inhibited and excited conditions were applied on occipital area. EEGs were measured before and after stimulation for 1 minute of alternatively 10 seconds of eyes opening and 10 second of eyes closing. Subject follows these commands through wording on the monitor screen and beep sound form speaker. The alpha power between ±2 Hz of individual alpha frequency (IAF) was calculated during eyes closed and eyes opened in before and after stimulation. The results show that, the ratio of IAF alpha power (eyes closing/eyes opening) after 1 Hz rTMS and cathodal tDCS (inhibited condition) significant increase while tended to decrease after anodal tDCS (excited condition) compared with sham stimulation. These effects might cause from inhibited and excited active information processing in nerve cells that made alpha wave more synchronized and desynchronized. The alpha change according to stimulus point also related to originating area of alpha rhythm that generated in occipital area.

Original languageEnglish
Title of host publicationWorld Congress on Medical Physics and Biomedical Engineering
Pages356-359
Number of pages4
DOIs
Publication statusPublished - Apr 16 2013
EventWorld Congress on Medical Physics and Biomedical Engineering - Beijing, China
Duration: May 26 2012May 31 2012

Publication series

NameIFMBE Proceedings
Volume39 IFMBE
ISSN (Print)1680-0737

Other

OtherWorld Congress on Medical Physics and Biomedical Engineering
CountryChina
CityBeijing
Period5/26/125/31/12

All Science Journal Classification (ASJC) codes

  • Bioengineering
  • Biomedical Engineering

Fingerprint Dive into the research topics of 'Effects of transcranial magnetic stimulation and transcranial direct current stimulation on EEG alpha wave'. Together they form a unique fingerprint.

  • Cite this

    Puanhvuan, D., Nojima, K., Wongsawat, Y., & Iramina, K. (2013). Effects of transcranial magnetic stimulation and transcranial direct current stimulation on EEG alpha wave. In World Congress on Medical Physics and Biomedical Engineering (pp. 356-359). (IFMBE Proceedings; Vol. 39 IFMBE). https://doi.org/10.1007/978-3-642-29305-4_95