Mia Thomaidou

168 Table 3. Correlations of nocebo magnitudes and fear magnitudes across all groups and for both the acquisition and the extinction phase. Nocebo magnitude Control-Nocebo High-Pain High-Fear r P r P r P Fear magnitude Induction 0.73 <0.001 0.59 0.001 0.61 0.001 Extinction 0.17 0.21 0.32 0.04 0.69 <0.001 Note: Pain and fear scores are reported on a 0-10 pain Numeric Rating Scale. Figure 3. Means and standard deviations of startle responses as measured via electromyography. As compared to the Control group (N = 23), participants in the Highpain (N = 21) and High-threat group (N = 22) showed larger startle responses during nocebo trials as compared control trials of the acquisition phase. µV 130 120 100 90 80 70 60 50 40 30 20 10 0 Acquisition Nocebo Control Extinction Nocebo Control Contol High-pain High-fear Group

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