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Fig. 3 | BMC Neuroscience

Fig. 3

From: Impact of brain arousal and time-on-task on autonomic nervous system activity in the wake-sleep transition

Fig. 3

HR and SCL for two individuals (a, b) over 2-h EEG. Each dot represents the corresponding ANS value in 1 s. The visible gaps between dots indicate possible wake-up reaction. After each wake-up, however, EEG-vigilance stage A1 (red dots) rather than stage 0 (yellow dots) occurred almost exclusively. Subsequently a steep decrease occurred in about 100 s but without change in level of brain arousal

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