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Assessment of Ventilation II: Respiratory Depth and Rhythm

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Related Experiment Video

Updated: Jul 10, 2026

Investigation into Deep Breathing through Measurement of Ventilatory Parameters and Observation of Breathing Patterns

Investigation into Deep Breathing through Measurement of Ventilatory Parameters and Observation of Breathing Patterns

Published on: September 16, 2019

A new method for the quantification of breathing.

Michelle L Johnson¹, Patrick A Price, Emil Jovanov

¹Electrical and Computer Engineering, University of Alabama, Huntsville, Huntsville, Alabama, U.S.A.

Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual International Conference

|November 16, 2007

Summary

This study introduces a novel thermal imaging method to quantify breath flow and assess nasal breathing symmetry. The technique offers a non-invasive approach for monitoring physiological cycles and potential diagnostic applications.

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Area of Science:

Physiological monitoring
Biomedical engineering
Image processing

Background:

Unobtrusive monitoring of breath flow is limited.
Internal physiological cycles can be revealed by breath flow analysis.
Nostril dominance in breathing is an indicator of physiological states.

Purpose of the Study:

To present a new method for quantifying breath flow.
To evaluate breathing symmetry through both nostrils.
To explore the application of this method as a diagnostic tool.

Main Methods:

Utilizing thermal film to visualize breath flow.
Implementing image processing techniques for flow quantification.
Conducting experiments with 11 human subjects.

Main Results:

Demonstrated a correlation between subjective nostril dominance and analyzed parameters (left/right area ratio, average intensity).
Preliminary results show the system's potential for accurate breath flow measurement.
The method successfully visualized and quantified airflow from each nostril.

Conclusions:

The proposed thermal imaging method offers a viable approach for breath flow quantification and nasal symmetry evaluation.
This technique has potential applications in diagnostics, stress monitoring, biofeedback, and circadian rhythm analysis.
Further research can validate its clinical utility and expand its applications.