“…On a positive note, neurofeedback protocols are rarely associated with side effects (Hawkinson et al, 2012). Potential side effects experienced by patients include potential physical discomfort experienced before [e.g., during EEG cap preparation and calibration (Nijholt et al, 2011)] or during training sessions [e.g., claustrophobia due to the physical restriction in fMRI scanners (Sulzer et al, 2013)]. Noteworthy, only one study reported withdraws before the primary endpoint (Marlats et al, 2020), one other study reported drop-offs before the followup completion (Lavy et al, 2019), and three studies reported data exclusion due to technical problems or excessive noise in the recordings (Hohenfeld et al, 2017(Hohenfeld et al, , 2020Jang et al, 2019).…”