The other tasks, albeit reducing PWTT, failed to reach significance (Fig. 2D ). 5 Trapezius Muscle EMG Activity Compared to individual baselines, no significant increase of trapezius muscle activity could be observed for presentation of neutral (9.45 μV +/- 0.96 vs baseline 9.08 μV +/- 0.95, ns), negative (10.25 μV +/- 0.86 vs baseline 9.80 μV +/- 0.94, ns) nor positive affective pictures (9.69 μV +/- 0.67 vs baseline 9.31 μV +/- 0.55, ns), nor for mental arithmetic (12.11 μV +/- 0.76 vs baseline 11.43 μV +/- 0.75, ns).
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