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A member asked:
How could the level heart rate variability be an indicator of the level of sympathetic or vagal control?
A doctor has provided 1 answer
It is: Our regular heart rate which is slower than the intrinsic rate is the balance between the sympathetic and vagal inputs to the sinus node at any time with the latter dominating.This causes beat to beat variation specially noticeable during respiration Parasympathetic activity is represented by reduced variation in time domain and dominance of hi frequency oscillations in the spectral analysis
Answered 7/29/2014
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