EVALUATOR OF AUTONOMIC NERVE FUNCTION

摘要

PROBLEM TO BE SOLVED: To enable handy and inexpensive evaluation of an autonomic nerve function of an organism. SOLUTION: This apparatus evaluates the function of an autonomic nerve of an organism based on a first fluctuation component HFC comprising a frequency component almost equal to a respiration frequency of an organism which is extracted from a fluctuation of a pulse cycle TRR of the organism as detected continuously and a second fluctuation component LFC comprising a specified frequency component lower than the respiration frequency of the organism extracted from changes in the blood pressure value of the organism as detected continuously. A time difference TDRP is continuously calculated by a time difference calculation means 64 up to the maximum inclination point of a photoelectric pulse of the organism which is detected by a photoelectric pulse detection probe 12 sequentially from an R wave of an electrocardio induction wave of the organism detected sequentially by an electrocardio induction device 48. Changes in the inverse of the time difference TDPP are estimated by a blood pressure change estimation means 66 as changes in the blood pressure value.