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Sex and ear differences of brain-stem acoustic evoked potentials in a sample of normal full-term newborns. Normative study

STS Instructor Authored by Giuseppe A. Chiarenza

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Check out this Knowledge Base article from StressTherapy Solutions: Sex and ear differences of brain-stem acoustic evoked potentials in a sample of normal full-term newborns. Normative study.

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Study at a glance

Area
QEEG, Methods & Mechanisms
Study type
Observational study
Authors
Chiarenza GA, D'Ambrosio GM, Guareschi Cazzullo A
Journal
Electroencephalography and Clinical Neurophysiology/Evoked Potentials Section
Year
1988
Participants
80
Population
Children
Protocol
brainstem auditory evoked potentials

Key findings

  • Provides reference values (means, SDs, 95% and 99% limits) for newborn responses
  • Girls showed shorter latencies than boys for several waves
  • Responses from the left ear had shorter latencies
  • Latency, amplitude and shape changed with intensity, but some later inter-wave intervals did not

DOI 10.1016/0168-5597(88)90038-x → PubMed 2457487 →

Normative values for brainstem auditory evoked potentials were built from 80 healthy full-term newborns tested with clicks at four intensities. Means, spreads and confidence limits were calculated for each wave, the gaps between waves, and amplitude ratios. Response timing differed by sex, by ear and by loudness, so these factors matter when judging whether a newborn's result is normal.