Task Force of the European Society of Cardiology and the North American Society of Pacing and Electrophysiology. Heart rate variability: standards of measurement, physiological interpretation, and clinical use. Circulation, 93(5), 1043-1065, 1996.
Vaschillo, E., Vaschillo, B., & Lehrer, P. Characteristics of resonance in heart rate variability stimulated by biofeedback. Applied Psychophysiology and Biofeedback, 31(2), 129-142, 2006.
Thayer, J. F., & Lane, R. D. Claude Bernard and the heart-brain connection. Neuroscience & Biobehavioral Reviews, 33(2), 81-88, 2009.
Schneider, M., & Schwerdtfeger, A. Autonomic dysfunction in posttraumatic stress disorder indexed by heart rate variability: a meta-analysis. Psychological Medicine, 50(12), 1937-1948, 2020.
Germain, A. Sleep disturbances as the hallmark of PTSD: where are we now? American Journal of Psychiatry, 170(4), 372-382, 2013.
Radha, M., et al. Sleep stage classification from heart-rate variability using long short-term memory neural networks. Scientific Reports, 9, 14149, 2019.
Shaffer, F., & Ginsberg, J. P. An overview of heart rate variability metrics and norms. Frontiers in Public Health, 5, 258, 2017.
Karvonen, M. J., Kentala, E., & Mustala, O. The effects of training on heart rate. Annales Medicinae Experimentalis et Biologiae Fenniae, 35(3), 307-315, 1957.
Koenen, K. C., et al. Posttraumatic stress disorder in the World Mental Health Surveys. Psychological Medicine, 47(13), 2260-2274, 2017.