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Cortical maturation of long latency auditory evoked potentials in hearing children: the complex P1-N1-P2-N2

Liliane Aparecida Fagundes Silva1, Fernanda Cristina Leite Magliaro1, Ana Claudia Martinho de Carvalho1

  • 1Departamento de Fisioterapia, Fonoaudiologia e Terapia Ocupacional, Faculdade de Medicina - FMUSP, Universidade de São Paulo - USP - São Paulo (SP), Brasil.

Codas
|September 7, 2017
PubMed

Insights

Long Latency Auditory Evoked Potentials (LLAEP) mature gradually in children. Component emergence, particularly P1 and N2, is linked to central auditory system development rather than just age.

Area of Science:

  • Pediatric audiology
  • Neuroscience
  • Electrophysiology

Background:

  • Understanding auditory development is crucial for identifying hearing impairments early.
  • Long Latency Auditory Evoked Potentials (LLAEP) provide insights into the maturation of the central auditory nervous system.

Purpose of the Study:

  • To monitor the emergence and changes of LLAEP components in normal-hearing children.
  • To investigate the relationship between LLAEP maturation and chronological age.

Main Methods:

  • Longitudinal study of 15 children (10-63 months) divided into two age groups.
  • Electrophysiological assessment using LLAEP with /ba/ syllable at 70 dB HL.
  • Three evaluations over a nine-month period.

Main Results:

  • LLAEP components, primarily P1 and N2, emerged during the nine-month follow-up.
  • P1 latency showed significant differences, being longer in younger children.
  • N2 latency changes were most notable in older children.

Conclusions:

  • LLAEP maturation is a gradual process.
  • The development of complex LLAEP components is more closely associated with central auditory nervous system maturation than chronological age.
Abstract

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