HEART RHYTHM BASED METHOD OF OPERATOR EXAMINATION AND MONITORING FOR PSYCHOPHYSIOLOGICAL STATE IN PROFESSIONAL ACTIVITY Russian patent published in 2009 - IPC A61B5/452 A61B5/02 

FIELD: medicine.

SUBSTANCE: invention refers to medicine, namely to aviation medicine. Heart rate is measured in operator's activity to evaluate the working average factor (HR_{i av}), and to calculate the first cardiac intervalogramm derivative (HR_t). The derived data results in the psychophysiological stress level by formula: HR_{I av}/HR_f. The HR_t and HR_{I av} are compared. If HR_t lies within the range HR_{I av}±σ, the state is considered to be normal, if HR_t is beyond the range HR_{I av} ±σ, the state is considrerd as overstressed. The HR_t being beyond the range HR_{I av}±3σ shows the extremely stressed state. In case the sign of the HR_t in operator's activity during 1.5 - 2.0 minutes is changed two times and more, the psychophysiological state is estimated as unstable, so adaptation reserves of the organism are close to the breaking point.

EFFECT: method allows improving reliability of operator's psychophysiological state estimation in professional activity.

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