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respiratory sinus arrhythmia
respiratory sinus arrhythmia Respiratory sinus arrhythmia is a measure of heart-rate variation linked to breathing and to cardiac vagal activity.
Respiratory sinus arrhythmia is a measure of heart-rate variation linked to breathing and to cardiac vagal activity. Its size is affected by breathing pattern, including how fast and how deeply a person breathes, so these influences may need to be taken into account in psychophysiology research.