×

System and method for evaluating the autonomic nervous system of a living subject

  • US 5,830,148 A
  • Filed: 06/03/1997
  • Issued: 11/03/1998
  • Est. Priority Date: 06/03/1997
  • Status: Expired due to Fees
First Claim
Patent Images

1. A system for evaluating an autonomic nervous system of a living subject, comprising:

  • a first pulse wave detection circuit that detects first pulse waves from a first portion of the living subject;

    a second pulse wave detection circuit that detects second pulse waves from a second portion of the living subject;

    a time-difference determining circuit that determines time differences between predetermined periodic points of the first pulse waves to predetermined periodic points of corresponding second pulse waves; and

    a sympathetic nervous system evaluation circuit that determines an activity level of a sympathetic nervous system of the living subject based on frequency components present in fluctuations of the time differences determined by the time-difference determining circuit.

View all claims
  • 3 Assignments
Timeline View
Assignment View
    ×
    ×