What Researchers Did
Researchers used the critical flicker fusion frequency (CFFF) test, a measure of visual processing speed linked to cognitive alertness, to study how breathing oxygen in a hyperbaric chamber affects brain function in 21 subjects, including 15 who breathed oxygen during decompression.
What They Found
CFFF scores differed significantly between normobaric and hyperbaric conditions (p<0.01). Results were also significantly affected by whether participants breathed oxygen during the decompression phase. The data suggests oxygen breathing during HBOT sessions produces measurable, short-term changes in cognitive processing speed.
Canadian Relevance
No direct Canadian connection identified.
Study Limitations
With only 21 subjects and no follow-up measurements after leaving the chamber, this study is limited in scope and cannot determine whether any cognitive effects persist beyond the HBOT session.