Repetitive transcranial magnetic stimulation (rTMS) is being studied as a treatment for alcohol use disorder (AUD), but its neuropsychological effects remain unclear. A study involving 30 recently detoxified AUD patients examined how rTMS affects event-related potentials (ERPs) during tasks designed to measure attention and performance monitoring. Participants were divided into two groups, one receiving 10 sessions of rTMS and the other receiving sham treatment. Measurements were taken at the start and after five and ten sessions. Results showed no significant changes in the N100, N200, or P300 ERPs, indicating that rTMS did not influence performance monitoring or attentional bias in this group. However, Bayesian analyses hinted at a possible effect on N100 amplitude at the frontal electrode FZ. These initial findings suggest a need for additional research on how rTMS may impact ERP outcomes in AUD patients. The study also emphasizes exploring other neuropsychological markers, such as brain network connectivity, to understand the clinical effects of rTMS better. The research is registered under ClinicalTrials.gov Identifier NCT01973127.