| abstract |
The method of determining the user's stress level according to the calculated sympathovagal balance (SVB) value based on the measurement data set is based on the number of autonomic nervous system (ANS) activity markers in the first part of the measurement data set, Determining a heart rate variability (HRV) characteristic that is a ratio related to the number of ANS activity markers in a second portion of the measurement data set, and then determining a user's stress level based on HRV characteristics. The first and second portions of the measurement data set may be selected based on a user-specific reference SVB value that divides the histogram representation of the measurement data set into first and second portions. |