Relationship between delta power and the electrocardiogram-derived cardiopulmonary spectrogram: possible implications for assessing the effectiveness of sleep

Reference:
Thomas RJ, Mietus JE, Peng CK, et al. Relationship between delta power and the electrocardiogram-derived cardiopulmonary spectrogram. Possible implications for assessing the effectiveness of sleep. Sleep Med 2014; 15(1): 125-31 DOI: 10.1016/j.sleep.2013.10.002

Objectives:
To evaluate the hypothesis that that slow-wave EEG power would show a relatively fixed-time relationship to periods of high-frequency CardioPulmonary Coupling (Stable Sleep).

Conclusions:
The overall correlation (r) between delta power and high-frequency coupling (HFC – stable sleep) power was statistically significant.

Practical Significance:
The results support a tight temporal relationship between EEG slow wave power and high frequency cardiopulmonary coupling and allows for a simple method to estimate and track deep sleep. 

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Relationship between delta power and the electrocardiogram-derived cardiopulmonary spectrogram: possible implications for assessing the effectiveness of sleep