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Tytuł pozycji:

Dosimetry Analysis in Non-brain Tissues During TMS Exposure of Broca’s and M1 Areas

Tytuł:
Dosimetry Analysis in Non-brain Tissues During TMS Exposure of Broca’s and M1 Areas
Autorzy:
Jose Gomez-Tames
Keisuke Tani
Kazuya Hayashi
Satoshi Tanaka
Shoogo Ueno
Akimasa Hirata
Temat:
perception threshold
pain threshold
dosimetry
nerve model
TMS
standardization
Neurosciences. Biological psychiatry. Neuropsychiatry
RC321-571
Źródło:
Frontiers in Neuroscience, Vol 15 (2021)
Wydawca:
Frontiers Media S.A., 2021.
Rok publikacji:
2021
Kolekcja:
LCC:Neurosciences. Biological psychiatry. Neuropsychiatry
Typ dokumentu:
article
Opis pliku:
electronic resource
Język:
English
ISSN:
1662-453X
Relacje:
https://www.frontiersin.org/articles/10.3389/fnins.2021.644951/full; https://doaj.org/toc/1662-453X
DOI:
10.3389/fnins.2021.644951
Dostęp URL:
https://doaj.org/article/3808ca46b18b45baa0335d7aa09dda97  Link otwiera się w nowym oknie
Numer akcesji:
edsdoj.3808ca46b18b45baa0335d7aa09dda97
Czasopismo naukowe
For human protection, the internal electric field is used as a dosimetric quantity for electromagnetic fields lower than 5–10 MHz. According to international standards, in this frequency range, electrostimulation is the main adverse effect against which protection is needed. One of the topics to be investigated is the quantification of the internal electric field threshold levels of perception and pain. Pain has been reported as a side effect during transcranial magnetic stimulation (TMS), especially during stimulation of the Broca’s (speech) area of the brain. In this study, we designed an experiment to conduct a dosimetry analysis to quantify the internal electric field corresponding to perception and pain thresholds when targeting the Broca’s and M1 areas from magnetic stimulator exposure. Dosimetry analysis was conducted using a multi-scale analysis in an individualized head model to investigate electrostimulation in an axonal model. The main finding is that the stimulation on the primary motor cortex has higher perception and pain thresholds when compared to Broca’s area. Also, TMS-induced electric field applied to Broca’s area exhibited dependence on the coil orientation at lower electric field threshold which was found to be related to the location and thickness of pain fibers. The derived dosimetry quantities provide a scientific rationale for the development of human protection guidelines and the estimation of possible side effects of magnetic stimulation in clinical applications.

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