Method and Apparatus for Facilitating Physiological Coherence and Autonomic Balance

• US 20090137915A1
• Filed: 11/03/2008
• Published: 05/28/2009
• Est. Priority Date: 03/02/1999
• Status: Active Grant

• Current Assignee: Quantum Intech, Inc.
• Original Assignee: Quantum Intech, Inc.
• Inventors: McCraty, Rollin, Atkinson, Michael A., Childre, Doc L.
• Granted Patent: US 8,066,637 B2
• Time in Patent Office: Days
• US Class Current: 600/515
• CPC Class Codes: A61B 5/024 Detecting, measuring or recording pulse rate or heart rate A61B5/0205, A61B5/021 take precedence
• CPC Class Codes: A61B 5/02405 Determining heart rate variability
• CPC Class Codes: A61B 5/02416 using photoplethysmograph signals, e.g. generated by infrared radiation A61B5/14552 takes precedence
• CPC Class Codes: A61B 5/0245 by using sensing means generating electric signals, i.e. ECG signals
• CPC Class Codes: A61B 5/4035 Evaluating the autonomic nervous system
• CPC Class Codes: A61B 5/4047 afferent nerves, i.e. nerves that relay impulses to the central nervous system
• CPC Class Codes: A61B 5/486 Bio-feedback A61B5/375 takes precedence

Abstract

Method and apparatus for determining the state of entrainment between biological systems which exhibit oscillatory behavior such as heart rhythms, respiration, blood pressure waves and low frequency brain waves based on a determination of heart rate variability (HRV) and an evaluation of the power spectrum thereof. Entrainment reflects a harmonious balance between the two branches of the autonomic nervous system within the body. This internal state of heightened physiological efficiency enhances health and promotes optimal performance. According to one embodiment a method is used to determine the entrainment level based on an entrainment parameter related to HRV. The method first determines the power distribution spectrum (PSD) and then calculates an entrainment parameter (EP), which is a measure of the power distribution in the HRV spectrum. High EP values occur when this power is concentrated within a relatively narrow range of frequencies, and lower values when the power is distributed over a broader range of frequencies. In one embodiment, an apparatus is provided for monitoring the heart beat and presenting this information via a personal computer, handheld device, or other processing means.

Claims

1-11. -11. (canceled)

12. A method comprising:

sampling a physiological measure of a subject;

tracking dynamically, in a time domain, a heart rhythm pattern of the subject using data from said sampling, wherein said heart rhythm pattern has an amplitude and frequency which varies over time;

detecting when the heart rhythm pattern exhibits a sine waveform within a frequency range of between 0.03125 Hertz and 0.234 Hertz; and

providing an indication that said subject is in a state of physiological coherence when the heart rhythm pattern exhibits said sine waveform within said frequency range.

13. The method of claim 12, providing a second indication corresponding to the subject not being in the state of physiological coherence when the heart rhythm pattern does not exhibit said sine waveform.

14. The method of claim 12, wherein the state of physiological coherence is further characterized by an increased synchronization between two or more oscillatory systems of said subject.

15. The method of claim 12, wherein the state of physiological coherence is further characterized by a state of relaxation.

16. The method of claim 12, wherein the state of physiological coherence is further characterized by a state of increased respiratory sinus arrhythmia.

17. The method of claim 12, wherein sampling the physiological measure comprises sampling the physiological measure where said physiological measure comprises respiratory sinus arrhythmia, heart rate variability, respiration patterns and blood pressure rhythms.

18. The method of claim 12 wherein said state of physiological coherence is further characterized by increased positive emotions in said subject.

19. The method of claim 12, wherein the heart rhythm pattern is one of a respiratory sinus arrhythmia wave and a heart rate variability wave.

20. The method of claim 12, wherein sampling further comprises analyzing the physiological measure in one of a frequency domain, a time domain, a period analysis and a template match.

21. An apparatus comprising:

sampling means adapted to sample a physiological measure of a subject; and

,

an information output means;

a processor coupled to the sampling means and the information output means, said processor configured to,

sample a physiological measure of a subject,

track dynamically in a time domain a heart rhythm pattern of the subject using data from said sampling, wherein said heart rhythm pattern has an amplitude and frequency which varies over time,

detect when the heart rhythm pattern exhibits a sine waveform within a frequency range of between 0.03125 Hertz and 0.234 Hertz, and

provide an indication, via the information output means, that said subject is in a state of physiological coherence when the heart rhythm pattern exhibits said sine waveform within said frequency range.

22. The apparatus of claim 21, wherein the processor is further configured to provide a second indication, via the information output means, corresponding to the subject not being in the state of physiological coherence when the heart rhythm pattern does not exhibit said sine waveform.

23. The apparatus of claim 21, wherein the state of physiological coherence is further characterized by an increased synchronization between two or more oscillatory systems of said subject.

24. The apparatus of claim 21, wherein the state of physiological coherence is further characterized by a state of relaxation.

25. The method of claim 21, wherein the state of physiological coherence is further characterized by a state of increased respiratory sinus arrhythmia.

26. The apparatus of claim 21, wherein physiological measure comprises one of a respiratory sinus arrhythmia, heart rate variability, respiration patterns and blood pressure rhythms.

27. The apparatus of claim 21, wherein said state of physiological coherence is further characterized by increased positive emotions in said subject.

28. The apparatus of claim 21, wherein the heart rhythm pattern is one of a respiratory sinus arrhythmia wave and a heart rate variability wave.

29. The apparatus of claim 21, wherein said sampling means comprises sampling means for analyzing the physiological measure in one of a frequency domain, a time domain, a period analysis and a template match.