Go-NoGo task
impulsivity
For the Go-NoGo paradigm, the ‘Go’ and ‘NoGo’ stimuli were presented for 500 ms each with an interstimulus interval of 750 ms. The Go-NoGo paradigm allowed for event-related analysis and is used to assess impulsivity (automatically generated ‘Go’ responses) versus inhibition (‘NoGo’ responses). In the ‘Go’ trials, participants were asked to press a button on GREEN stimuli as quickly as possible (with the word “press” displayed in green); in the ‘NoGo’ trials, participants should withhold button presses on RED stimuli (with the word “press” displayed in red). The probability of ‘NoGo’ stimuli was 0.33. A total of 180 ‘Go’ and 60 ‘NoGo’ stimuli were presented in a pseudorandom order with a constraint to ensure that ‘NoGo’ stimuli were not repeated more than 3 times in a row. Reaction times and number of errors on task were used to evaluate task performance [Informed by previous findings [Person-level activation of the ROIs for each contrast of interest for each task (e.g., threat versus neutral faces, no-go versus go) was derived in a manner consistent with the methods used in prior studies [