Summary

2019 Joint International Symposium on Electromagnetic Compatibility and Asia-Pacific International Symposium on Electromagnetic Compatibility, Sapporo

2019

Session Number:TuePM2A

Session:

Number:TuePM2A.1

Setting Reference Level in Human Safety Guidelines Via Cortical Nerve Activation Intercomparison at IF

Jose Gomez-Tames,  Akimasa Hirata,  Essam Rashed,  Thomas Tarnaud,  Emmeric Tanghe,  Tom Van de Steene,  Wout Joseph,  Luc Martens,  

pp.-

Publication Date:2016/10/5

Online ISSN:2188-5079

DOI:10.34385/proc.58.TuePM2A.1

PDF download (863KB)

Summary:
International guidelines/standards have been published for human protection from electromagnetic field exposure. The research in the intermediate frequencies (IF: 300 Hz-10 MHz) is scattered unlike for other frequencies, and thus the limit prescribed in the guidelines/standards are different by a factor of 10. The IEEE International Committee on Electromagnetic Safety has published a research agenda for exploring the electrostimulation thresholds. However, the consistency of the excitation models for specific target tissue needs to be revised. For this purpose, we present the first intercomparison study using multiphysics modelling to investigate stimulation thresholds during transcranial magnetic stimulation (TMS). To define the stimulation threshold, a non-invasive technique for brain stimulation has been used. In this study, by incorporating individual neurons into electromagnetic computation in realistic head models, stimulation thresholds can be determined. The study case of one subject showed that the allowable external magnetic field strength in the current guidelines/standard is conservative.