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Related Experiment Videos

EEG changes during forced alternate nostril breathing

A Stancák1, M Kuna

  • 1Department of Physiology and Clinical Physiology, Charles IV University, Prague, Czech Republic.

International Journal of Psychophysiology : Official Journal of the International Organization of Psychophysiology
|October 1, 1994
PubMed
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Forced alternate nostril breathing (FANB) significantly impacts brain activity, increasing beta and alpha EEG power. This practice also balances hemispheric function, suggesting a calming effect on the brain.

Area of Science:

  • Neuroscience
  • Yoga and Meditation Studies

Background:

  • Alternate nostril breathing is a yogic practice with potential cognitive and physiological effects.
  • Understanding the neurophysiological underpinnings of such practices is crucial for their therapeutic application.

Purpose of the Study:

  • To investigate the effects of forced alternate nostril breathing (FANB) on electroencephalography (EEG) topography.
  • To examine brain activity patterns during two distinct types of FANB.

Main Methods:

  • 18 trained subjects performed 10-minute sessions of FANB.
  • EEG topography was recorded during FANB, involving left-right nostril alternating breathing patterns.
  • Analysis focused on power changes in alpha and beta frequency bands.

Main Results:

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  • Mean power in beta bands and partially in the alpha band increased during FANB.
  • Hemisphere asymmetry in the beta 1 band decreased during the latter half of FANB.
  • These changes were observed irrespective of the nostril breathing sequence.

Conclusions:

  • FANB influences brain activity, indicated by increased EEG power in specific frequency bands.
  • FANB demonstrates a balancing effect on left and right hemispheric functional activity.
  • The findings suggest FANB may promote a more integrated brain state.