What Researchers Did
Researchers measured psychometric performance, electroencephalography (EEG), and task load perception in 12 human participants breathing normobaric air and 100% oxygen, and hyperbaric 100% oxygen at 142 and 284 kPa.
What They Found
Hyperbaric oxygen did not change EEG global efficiency or psychometric performance, unlike hyperbaric air which likely showed narcotic effects. However, oxygen significantly reduced default-mode-network (DMN) complexity and task load perception. These findings suggest early oxygen-induced cortical hyperexcitability rather than narcosis.
What This Means for Canadian Patients
These findings could help refine safety protocols for divers to mitigate risks associated with oxygen exposure at depth. For patients undergoing hyperbaric oxygen therapy, this research may inform adjustments to treatment parameters to optimize outcomes and minimize adverse effects.
Canadian Relevance
Given Canada's active diving community and the use of hyperbaric oxygen therapy in Canadian hospitals, these findings are relevant for enhancing safety and treatment efficacy across the country.
Study Limitations
A limitation of this study is its relatively small sample size of 12 participants, which may affect the generalizability of the findings.