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Auditory brainstem evoked potentials during sleep apnea.

R Peled, H Pratt, B Scharf

    Neurology
    |April 1, 1983
    PubMed
    Summary
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    Auditory brainstem evoked potentials (ABEPs) remained stable during central sleep apnea, suggesting effective brainstem compensatory mechanisms. No functional abnormalities were detected in the auditory pathways during apneic events.

    Area of Science:

    • Neuroscience
    • Sleep Medicine
    • Auditory Neuroscience

    Background:

    • Central sleep apnea (CSA) is characterized by the absence of respiratory effort during sleep.
    • The impact of CSA on central nervous system function, particularly the auditory brainstem, is not fully understood.
    • Auditory brainstem evoked potentials (ABEPs) provide a measure of the integrity and function of the auditory pathway from the cochlea to the midbrain.

    Purpose of the Study:

    • To investigate potential functional abnormalities in the auditory brainstem during central sleep apnea.
    • To evaluate the effect of different phases of central apneas on auditory brainstem function.
    • To assess the compensatory mechanisms within the auditory brainstem during apneic episodes.

    Main Methods:

    • Auditory brainstem evoked potentials (ABEPs) were recorded in seven subjects with central sleep apnea.

    Related Experiment Videos

  • Recordings were obtained during waking, non-REM sleep between apneas, and during the first and second halves of apneas.
  • Analysis focused on latencies of vertex positive peaks III, V, and VI, and the V-III interpeak latency difference.

    • Main Results:

    • ABEP measures did not reveal chronic or acute functional abnormalities of the auditory brainstem.
    • The recorded ABEPs remained normal and stable throughout the different phases of central apneas.
    • No significant changes in ABEP latencies or interpeak differences were observed during apneic events.

    Conclusions:

    • The stability of ABEPs during central sleep apnea suggests effective compensatory mechanisms in the auditory brainstem.
    • The studied ABEP measures do not appear to reflect functional changes associated with central apneas, unless they are part of a broader neurological dysfunction.
    • Further research may be needed to explore other neurophysiological markers for brainstem changes in central sleep apnea.