This paper has now been accepted for publication (January 2019): Castiglione A, Wagner J, Anderson MC, Aron AR (in press). Preventing a thought from coming to mind elicits increased right frontal beta just as stopping action does. Cerebral Cortex. This is an EEG study in 41 participants. The study hypotheses, methods and analytic plan were registered here 10-28-17. We have here provided pre-proce...