Vegetative stress e.g. tachycardia, level quantification method for autonomous nervous system balance determination, involves obtaining real time parameter representing level as function of variance portions of low and high frequency bands

摘要

The method involves converting a heart beat signal (9) into a one-dimensional unequally spaced heart-rate raw signal, which is code converted to equi distant signal. Variance portions representing energy peaks of a heart-rate energy spectrum are assigned to predefined frequency bands. A real time parameter representing a vegetative stress level is determined as a function of the variance portions of low and high frequency bands. An independent claim is also included for a device for quantification of vegetative stress levels.