Figure 1.

Experimental paradigm. (A) Scheme of one trial of the experimental paradigm. Time course of the presentation of the initial visual cue with the image of the piano and the block‐specific sequence content, followed by the auditory cues. The auditory cues reproduced the sequence elements for two renditions at a rate of one tone every 300 ms (200 bpm) prior to the go signal. Participants had to begin playing the sequence renditions after the last metronome cue at the presentation of the go cue (green ellipse). Within‐trial performance was characterized by a concatenation of approximately 10 sequence renditions without large pauses. The end of the trial after 23 s of performance was signaled by a visual cue with a red ellipse. (B) The pitch content (and corresponding MIDI note numbers) of our custom‐made MEG‐compatible keyboard is displayed at the bottom. During the experiment we used three kinds of auditory feedback. (i) Normal auditory feedback associated with the keystroke (NAF, denoted here by the black quaver) was present in the control trials (1, 6, and 11). (ii) Alterations of auditory feedback sounding as a serial order error (alterations of serial order or ASO, denoted by the blue quaver) were introduced in trials 2, 4, 8, 10, 12, and 14. (iii) Alterations of auditory feedback with a pitch content unrelated to the sequence (unrelated auditory feedback alterations or UAF, with pitch values A^# or D^# and corresponding MIDI note numbers 59 and 64; denoted by the red quaver) were introduced in trials 3, 5, 7, 9, 13, and 15. [Color figure can be viewed at http://wileyonlinelibrary.com]