Heating of EEG Electrodes During Rtms
This study provides electrode heating data for modern repetitive transcranial magnetic stimulation (rTMS) paradigms for the recording of electroencephalograms (EEG) during rTMS. The concern is that during rTMS EEG electrodes can heat to an unsafe temperature. Seven electrode types were tested: silver/silver chloride, silver cup, gold cup, notched gold cup, notched silver cup, notched gold-plated silver cup, and carbon. Four of these are commercially available, including the carbon electrodes designed for MRI use. The three notched electrodes tested were standard electrodes notched using metal clippers to reduce eddy currents. The results of this study show that electrode heating is a concern when collecting EEG during rTMS. However, a number of standard electrodes or slightly modified standard electrodes are suitable for recording EEG during rTMS if certain stimulating parameters are adhered to.