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[Changes in human evoked potentials during altitude decompression].

A A Antonov

    Kosmicheskaia Biologiia I Aviakosmicheskaia Meditsina
    |September 1, 1975
    PubMed
    Summary
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    Altitude decompression affects vision. Evoked potentials reveal optic analyzer changes before and during decompression sickness (bends), with distinct responses to pain.

    Area of Science:

    • Neuroscience
    • Ophthalmology
    • Aerospace Medicine

    Context:

    • Altitude decompression presents unique physiological challenges.
    • Understanding the impact on sensory systems is crucial for safety.
    • The optic analyzer's function under such stress requires detailed investigation.

    Purpose:

    • To assess the functional state of the optic analyzer (visual system) during altitude decompression.
    • To investigate changes in visual evoked potentials (VEPs) under varying decompression conditions.
    • To differentiate the optic analyzer's response to painless decompression versus decompression sickness symptoms.

    Summary:

    • Evoked potentials to light stimuli were recorded to evaluate the optic analyzer during altitude decompression.
    • Significant alterations in the latent periods and energies of VEP waves were observed across different decompression regimes.

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  • The study concludes that the optic analyzer's function changes prior to and more profoundly during decompression sickness, with differential responses to pain.

    • Impact:

    • Provides objective electrophysiological data on visual system changes during altitude exposure.
    • Highlights the sensitivity of the optic analyzer to decompression stress.
    • Informs potential strategies for monitoring and mitigating visual disturbances in high-altitude environments or during aerospace activities.