[abstract] CHANGES IN VISUAL EVOKED RESPONSES AND EEGs DURING HYPERBARIC EXPOSURE.

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[abstract] CHANGES IN VISUAL EVOKED RESPONSES AND EEGs DURING HYPERBARIC EXPOSURE.

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Title: [abstract] CHANGES IN VISUAL EVOKED RESPONSES AND EEGs DURING HYPERBARIC EXPOSURE.
Author: Kinney, JS
Abstract: Visual evoked cortical responses (VERs) and EEGs have been recorded in several air dives to 200-300 ft. These include the NSMRL studies conducted as part of the Ocean Systems saturation dive series with excursions to 300 ft; the MSMRL Shallow Habitat Air Dive I at 50 ft with excursions to 200-235 ft; and the NSMRL repeated bounce dives to 200 ft employing many subjects. There are many points of similarity in the data from these dives and this paper summarizes the general conclusions. First, there are waveform differences in the VERs to slow rates of stimulation at depth, compared to surface controls, that are consistent across subjects. Second, there are decrements in the response to rapid rates of stimulation which vary with depth. On the other hand, comparison of the amplitude of alpha in EEGs shows no consistent change with depth. Third, there is evidence in all the dives that repeated exposures to air at depth result in some adaptation. These results are related to the literature on nitrogen narcosis and on hyperbaric experimentation with EEGs and evoked responses in animals.
Description: Abstract of the Undersea and Hyperbaric Medical Society, Inc. Annual Scientific Meeting held May 10-11, 1974. Hilton Hotel, Washington, D.C. (http:www.uhms.org)
URI: http://archive.rubicon-foundation.org/55
Date: 1974

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  • UHMS Meeting Abstracts
    This is a collection of the published abstracts from the Undersea and Hyperbaric Medical Society (UHMS) annual meetings.

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