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. Author manuscript; available in PMC: 2021 Jul 1.
Published in final edited form as: IEEE Trans Biomed Eng. 2021 Jun 17;68(7):2233–2240. doi: 10.1109/TBME.2020.3048321

Fig. 5.

Fig. 5.

Measured TMS coil sound levels as a function of the stimulation strength obtained at maximum stimulator output. The peak SPL (top) and SL of 20 Hz rTMS (bottom) were measured at 25 cm from the coils at 167% average RMT and extrapolated to 5 cm distance by adding 14 dB. Apart from the DCC measurements, the commercial coil data are reproduced from our prior work [1]. DCC* is a litz-wire version of DCC intended primarily for high-voltage ultra-brief TMS pulses; see Supplementary material for more details.