Jönsson P (January 2007). “Respiratory sinus arrhythmia as a function of state anxiety in healthy people”. International Journal of Psychophysiology. Brosschot JF, Van Dijk E, Thayer JF (January 2007). “Daily fear is said to low heart rate variability during waking and the following nocturnal sleep interval”. Worldwide Journal of Psychophysiology. Cohen H, Kotler M, Matar […]
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