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. Author manuscript; available in PMC: 2014 Jan 1.
Published in final edited form as: Sleep Med. 2012 Nov 3;14(1):85–90. doi: 10.1016/j.sleep.2012.09.021

Fig. 1.

Fig. 1

Example of a polysomnographic recording during the fragmentation night; heart rate fluctuations are also reported on the bottom. Note the different responses in spontaneous and evoked EEG activations (sound meter peaks) elicited by auditory stimuli and the subsequent rises in heart rate.