30% oxygen inhalation enhances cognitive performance through robust activation in the brain
Related Experiment Video
Updated: Aug 19, 2026

Orienteering as a Tool for Cognitive Research: An Implementation Guide
Published on: November 29, 2024
Jin-Hun Sohn1, Soon-Cheol Chung, Eun-Hye Jang
1Department of Psychology, Institute for Brain Research, Chungnam National University, Daejon, South Korea. jhsohn@cnu.ac.kr
Abstract:
This study aimed to investigate whether inhalation of the air with 30% oxygen compared with normal air enhances cognitive functioning through increased activation in the brain. The verbal and visuospatial tasks were performed while brain images were scanned. The results showed that there were improvements in performance and also increased activation in several brain areas under the condition of 30% oxygen. These results suggest that a higher concentration of the inhaled oxygen increases the saturation of the blood oxygen in the brain, and facilitates cognitive performance.
Related Concept Videos
Physiological Control of Respiration
Breathing, a seemingly passive process, is regulated by the respiratory center in the brainstem. This center coordinates the involuntary control of respirations, which means it occurs without conscious effort, ensuring a smooth and uninterrupted pattern.
Regulation of Ventilation
The body maintains ventilation by monitoring levels of carbon dioxide (CO2), oxygen (O2), and hydrogen ion concentration (pH) in the arterial blood. Among these factors, the level of CO2 plays a crucial...
Other Factors Affecting Respiration Centers
However, the ability to hold one's breath voluntarily is not limitless. When the CO2 concentration in the blood reaches a critical level,...
Cognitive Enhancers: Cholinesterase Inhibitors and NMDA Receptor Antagonists
Alterations in Respiration II
In Biot's breathing, the respiratory rate and depth are irregular, alternating between periods of deep gasping and apnea. Common causes include...
Chemical Factors Affecting Respiration Centers
CO2 has a potent influence on respiration and is strictly regulated. Under...
Cognitive Development During Adulthood
