How You Breathe Redirects Your Brain’s Neural Traffic

New research using functional magnetic resonance imaging (fMRI) suggests that the simple act of switching between nasal and oral respiration fundamentally alters how your brain communicates. In a study of 20 healthy males, scientists observed that breathing mode redirects neural activity within a newly proposed framework called the ‘respiration-entrained brain oscillation network’ (REBON).

When participants breathed through their noses, activity centred on the olfactory region and enhanced connectivity within higher-order networks, such as the default mode and frontoparietal networks, which are linked to complex cognitive processing. Conversely, mouth breathing shifted dominance to the brainstem, engaging subcortical regions associated with autonomic regulation and basic survival functions.

Despite these divergent paths, a stable core comprising the hippocampus, amygdala, and insula—areas crucial for memory and emotion—remained active regardless of the breathing style. The researchers suggest that this frequency-specific activity (0.1–0.2 Hz) allows the brain to alternate between cognitive sophistication and survival maintenance. While these findings offer potential new avenues for therapeutic strategies in emotion regulation, the authors note that further experimental validation is required.