- Tap/Click when a Red, Teal, or Blue ball appears — these are GO targets.
- Do NOT tap when the Purple circle/ball appears — that’s the NO-GO cue.
- Be fast and accurate. At the end, you’ll see average RTs by color, No-Go accuracy, and d′.
Fixation stability, rapid target acquisition, and express-saccade control. Confirm features before committing; avoid impulsive looks.
Right inferior frontal gyrus & pre-SMA (inhibition), basal ganglia (gating), dorsal stream timing. Faster choices, fewer false alarms.
Don’t bite on fakes: basketball close-outs, jump-start restraint in racing, goalie discipline on dekes. Quick GO, clean NO-GO.
Select a level and choose Start to begin.
