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Brain Cogn. 2004 Dec;56(3):279-85.

The effect of 30% oxygen on visuospatial performance and brain activation: an fMRI study.

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Department of Biomedical Engineering, College of Medicine, Konkuk University, Choongjoo, Republic of Korea.


This study aimed to investigate the hypothesis that administration of the air with 30% oxygen compared with normal air (21% oxygen) enhances cognitive functioning through increased activation in the brain. A visuospatial task was presented while brain images were scanned by a 3 T fMRI system. The results showed that there was an improvement in performance and also increased activation in several brain areas in the higher oxygen condition. These results suggest that a higher concentration of breathed oxygen increases saturation of blood oxygen in the brain and facilitates performance.

[Indexed for MEDLINE]

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