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Figure 1 :Noise-induced alterations in heart rate relative to average heart rate -30 to -20 seconds before noise onset based on[51] are shown. In case of EEG awakenings, the maximum average heart rate increased by 10 beats per minute, the response was monophasic, and did not reach baseline levels 60 seconds after noise onset. If there was no EEG awakening, maximum average heart rate increase by only 1 bpm, the response was biphasic, and reached baseline levels ca. 15 seconds after noise onset. Point estimates and standard errors are shown.

Figure 1 :Noise-induced alterations in heart rate relative to average heart rate -30 to -20 seconds before noise onset based on[51] are shown. In case of EEG awakenings, the maximum average heart rate increased by 10 beats per minute, the response was monophasic, and did not reach baseline levels 60 seconds after noise onset. If there was no EEG awakening, maximum average heart rate increase by only 1 bpm, the response was biphasic, and reached baseline levels ca. 15 seconds after noise onset. Point estimates and standard errors are shown.