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Cortical Auditory Evoked Potentials with Simple (Tone Burst) and Complex (Speech) Stimuli in Children with Cochlear

Kelly Vasconcelos Chaves Martins1, Daniela Gil1

  • 1Department of Speech-Language Pathology and Audiology, Universidade Federal de São Paulo - UNIFESP, São Paulo, Brazil.

International Archives of Otorhinolaryngology
|October 12, 2017
PubMed

Insights

Aural rehabilitation significantly reduced P1 latency in children with cochlear implants. This improvement in cortical auditory evoked potential occurred within three months for both simple and complex auditory stimuli.

Area of Science:

  • Neuroscience
  • Audiology
  • Pediatrics

Background:

  • The P1 component of cortical auditory evoked potentials (CAEPs) is crucial for assessing auditory pathway function in cochlear implant (CI) users.
  • Understanding the impact of aural rehabilitation on CAEPs is vital for optimizing auditory development in pediatric CI recipients.

Purpose of the Study:

  • To investigate how aural rehabilitation influences the latency and amplitude of the P1 CAEP component in children with CIs.
  • To compare the effects of simple (tone burst) and complex (speech) stimuli on P1 parameters following rehabilitation.

Main Methods:

  • A cohort of six children (5-10 years) with CIs (≥12 months use) participated.
  • Cortical auditory evoked potentials were recorded at baseline and after 3 months of structured aural rehabilitation.
  • Free-field presentation of tone burst and speech stimuli at 70 dB HL was used to elicit P1 responses.

Main Results:

  • No significant difference in P1 latency or amplitude was found between simple and complex stimuli.
  • A statistically significant reduction in P1 latency was observed after 3 months of aural rehabilitation for both stimulus types.
  • No significant changes in P1 amplitude were noted between the two evaluations or stimulus types.

Conclusions:

  • Aural rehabilitation effectively reduces P1 latency in children with CIs within a 3-month period.
  • This latency reduction suggests improved neural processing speed in the auditory cortex following rehabilitation.
  • The findings highlight the positive impact of aural rehabilitation on auditory pathway maturation in pediatric CI users.

Keywords:
auditory evoked potentialsaural rehabilitationchildcochlear implanthearingneuronal plasticity

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