Figure 1

MEG data acquisition, example trial. This figure illustrates one of 20 trials (including 4 practice trials) every participant worked on. During the first 25 s of silence, the pre measure was obtained with MEG recording 1. A fixation cross was then followed by the presentation of one of the individually different – depending on results of the pilot study – sound stimuli (RI or CO stimulus). During the next period of silence MEG recording 2 was obtained, which was used as post measure. The mean tinnitus loudness rating (0 = tinnitus is inaudible, 10 = tinnitus is of usual loudness) refers to the preceding period of silence during which recording 2 was taken. After the second rating the participant indicated when the tinnitus reached its usual loudness again. This then started the next trial. *No time limit, fast response desired; ** time limit: 4 min.