Tms compatible eeg cap

We continuously recorded the EEG during single pulse TMS using a 64-channel EEG amplifier (TMSi, Oldenzaal, The Netherlands) and a TMS-compatible EEG cap (ANT Neuro, Enschede, The Netherlands). The ground electrode was placed between electrode positions Fz and Fpz. The EEG was sampled at 2048 Hz and low-pass filtered with an anti-aliasing filter with a cut-off frequency of 550 Hz.
The EEG was analyzed in the common average montage. Trials were defined from 50 ms before to 350 ms after every TMS pulse, resulting in 75 trials of 400 ms for each electrode position. After removal of the baseline, single trail principal component analysis (PCA) was performed using 40 principal components. For a detailed description of the PCA methods see ter Braack et al. (2013a (link)). The first four PCA components were removed, after which trials were filtered with a fourth order Butterworth bandpass filter between 1 and 45 Hz. Hereafter, trials were averaged, resulting in a TEP for each electrode position.

EEG signals were acquired using TMS‐compatible EEG cap (ANT Neuro) equipped with 64 Ag/AgCl electrodes in a layout operated by the extended international 10–20 system for electrode placement.
¹⁸ (link) All channels were referenced online to CPz and amplified with an EEGO amplifier (ANT Neuro). Sampling rate was set at 2048 Hz and impedances were maintained under 10 kΩ for all channels. During the 6‐min resting EEG recording, individuals sat comfortably in a dimly lit, sound‐shielded room with eyes closed.

Resting-state EEG was recorded at baseline and immediately after iTBS. During EEG recording, participants were seated comfortably in a sound-shielded, dimly lit room with eyes closed, which lasted for 6 min. EEG signals were recorded using a TMS-compatible EEG cap (ANT Neuro, Enschede, Netherlands) with 64 Ag/AgCl electrodes in a layout based on the extended international 10–20 system for electrodes placement (Jurcak et al., 2007 (link); Tamburro et al., 2020 (link)). All channels were referenced online to CPz and amplified with an eego amplifier (ANT Neuro, Enschede, Netherlands). Data were sampled at 2,048 Hz with impedances kept below 10 kΩ for all channels throughout data collection.