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. Author manuscript; available in PMC: 2015 Apr 30.
Published in final edited form as: Psychiatry Res. 2014 Feb 13;222(0):17–28. doi: 10.1016/j.pscychresns.2014.02.002

Fig. 1.

Fig. 1

Schematic of the Stop-Signal task. Participants were shown a series of go stimuli (left- and right-wards pointing arrows), to which participants were told to respond with left and right button presses, respectively (Go trials); on a subset of trials, a stop-signal (a 500-Hz tone presented through headphones) was presented at a variable delay after the onset of the go stimulus (duration indicated by stop-signal delay (SSD)) and lasted for 250 ms (Stop trials), indicating that participants should withhold the go response.