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Measuring and Characterizing the Human Nasal Cycle

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  • Roni Kahana-Zweig
  • Maya Geva-Sagiv
  • Aharon Weissbrod
  • Lavi Secundo
  • Nachum Soroker
  • Noam Sobel

Abstract

Nasal airflow is greater in one nostril than in the other because of transient asymmetric nasal passage obstruction by erectile tissue. The extent of obstruction alternates across nostrils with periodicity referred to as the nasal cycle. The nasal cycle is related to autonomic arousal and is indicative of asymmetry in brain function. Moreover, alterations in nasal cycle periodicity have been linked to various diseases. There is therefore need for a tool allowing continuous accurate measurement and recording of airflow in each nostril separately. Here we provide detailed instructions for constructing such a tool at minimal cost and effort. We demonstrate application of the tool in 33 right-handed healthy subjects, and derive several statistical measures for nasal cycle characterization. Using these measures applied to 24-hour recordings we observed that: 1: subjects spent slightly longer in left over right nostril dominance (left = 2.63 ± 0.89 hours, right = 2.17 ± 0.89 hours, t(32) = 2.07, p

Suggested Citation

  • Roni Kahana-Zweig & Maya Geva-Sagiv & Aharon Weissbrod & Lavi Secundo & Nachum Soroker & Noam Sobel, 2016. "Measuring and Characterizing the Human Nasal Cycle," PLOS ONE, Public Library of Science, vol. 11(10), pages 1-28, October.
    • Handle: RePEc:plo:pone00:0162918
    DOI: 10.1371/journal.pone.0162918
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    References listed on IDEAS

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    1. Noam Sobel & Rehan M. Khan & Amnon Saltman & Edith V. Sullivan & John D. E. Gabrieli, 1999. "The world smells different to each nostril," Nature, Nature, vol. 402(6757), pages 35-35, November.
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    Cited by:

    1. Lior Gorodisky & Danielle Honigstein & Aharon Weissbrod & Reut Weissgross & Timna Soroka & Sagit Shushan & Noam Sobel, 2024. "Humans without a sense of smell breathe differently," Nature Communications, Nature, vol. 15(1), pages 1-8, December.

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