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How does oxygen toxicity influece EEG? 


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Oxygen toxicity can significantly impact EEG activity. Studies have shown that exposure to hyperbaric oxygen can lead to EEG changes, including the appearance of seizure patterns. In cases of uncomplicated hyperbaric oxygen exposure, EEG changes were minor and not indicative of adverse effects on the brain. Additionally, exposure to O3 has been found to suppress wakefulness and paradoxical sleep while increasing slow-wave sleep, accompanied by lowered EEG amplitudes. Short-term hyperoxia in humans has shown alterations in brain activity, with decreases in certain frequency ranges during hyperoxic conditions. These findings suggest that oxygen toxicity can modulate brain states, affecting attentional processing, sleep initiation, and overall brain function, as reflected in EEG patterns.

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Short-term hyperoxia alters EEG patterns by decreasing alpha, beta, and gamma frequencies during eyes-opened conditions, and increasing delta and theta frequencies during eyes-closed conditions, suggesting state-specific effects.
Oxygen toxicity in rats leads to EEG changes before convulsions, including elevated delta, reduced alpha, and continuous reduction in beta bands, suggesting a relationship between EEG alterations and hyperbaric oxygen effects.
Oxygen toxicity in rats can lead to seizure patterns in EEG after a mean cumulative oxygen breathing time, with varying effects based on gas mixtures used during intermittent exposure.
Exposure to ozone (O3) suppresses wakefulness and paradoxical sleep while increasing slow-wave sleep in rats, affecting EEG activity by lowering amplitude of fast waves.
Oxygen toxicity did not significantly affect EEG in subjects exposed to hyperbaric oxygen, except for pre-convulsive changes in one subject with a seizure. EEG changes were minor overall.

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