Voluntary Cardio-Respiratory Synchronization: Hardware and Software Development and Evaluation

Abstract

Voluntary cardio-respiratory synchronization (VCRS) is a technique where an individual's breathing is voluntarily phase locked with his/her heart beat. A signal is generated (tone or light) from the ECG that is used to pace the breath with a fixed number of heart beats for inspiration and expiration. A small portable device was developed that can create a tone to pace the breathing and record the data for repeated measurements for extended periods of time (days or weeks). The device was tested on an individual over a four-week period. Measurements of heart rate variability were made at various times throughout the day for a total of 68 recordings. The data were analyzed to separate out respiratory and non-respiratory induced changes in the heart rate using a unique time domain analysis. The results showed significant variability over the measurement period.

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Document Details

Document Type
Technical Report
Publication Date
Oct 25, 2001
Accession Number
ADA411500

Entities

People

  • H. A. Belalcazar
  • L. I. Mason
  • R. P. Patterson
  • Yunjiao Pu

Organizations

  • University of Minnesota

Tags

Communities of Interest

  • Biomedical
  • Sensors

DTIC Thesaurus Topics

  • Amplitude
  • Biomedical Engineering
  • Cardiovascular System
  • Electromagnetic Pulses
  • Engineering
  • Fourier Analysis
  • Frequency
  • Frequency Domain
  • Heart Rate
  • Intervals
  • Measurement
  • Military Research
  • Nervous System
  • Parasympathetic Nervous System
  • Respiration
  • Software Development
  • Time Intervals

Readers

  • Computer Science/Computer Engineering/Data Science/Digital Signal Processing.
  • Marine Mammal Biology
  • Naval Personnel Management