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Left: diagram showing the sequence of a trial. The attention cue appeared on screen for 2 s, followed by the appearance of a fixation cross, and then 1 s later the trial stimuli began. After the stimuli finished, subjects were asked to judge whether a prompted sentence was one of those played by the attended speaker. Right: detailed view of the listening period, illustrating that data analysis was restricted to a 20-s window that began 1 s after the onset of the stimuli.
