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Quantitative Assessment of Cortical Auditory-tactile Processing in Children with Disabilities
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Auditory Lateralization Training Effects on Binaural Interaction Component of Middle Latency Response in Children

Yones Lotfi1, Abdollah Moosavi2, Farzaneh Zamiri Abdollahi1

  • 11Audiology Department, University of Social Welfare and Rehabilitation Sciences, Koodakyar Alley, Daneshjoo Blv., Evin, Tehran, Iran.

Indian Journal of Otolaryngology and Head and Neck Surgery : Official Publication of the Association of Otolaryngologists of India
|March 26, 2019
PubMed

Insights

Auditory lateralization training objectively improved binaural processing in children with central auditory processing disorder (C)APD. Middle latency response (MLR) measures showed significant neurophysiological changes, aligning with behavioral gains.

Area of Science:

  • Neuroscience
  • Audiology
  • Pediatrics

Background:

  • Children with central auditory processing disorder (C)APD often exhibit spatial and binaural processing deficits.
  • Current subjective tests for (C)APD training efficacy are limited by patient cooperation and attention.
  • Objective measures are needed to assess auditory training outcomes in children with (C)APD.

Purpose of the Study:

  • To investigate the effects of auditory lateralization training on the binaural interaction component (BIC) of the middle latency response (MLR).
  • To determine if objective neurophysiological changes occur following auditory lateralization training in children with suspected (C)APD.

Main Methods:

  • An analytical interventional study involving 60 children with suspected (C)APD, divided into control and training groups.
  • The training group underwent 12 sessions of auditory lateralization training using interaural time differences, presented as a game.
  • Middle latency response (MLR) and monaural selective auditory attention test (mSAAT) were administered before and after training.

Main Results:

  • Auditory lateralization training significantly decreased BIC latency and increased BIC amplitude in the training group (p ≤ 0.001).
  • The training group also showed significant improvements in mSAAT scores, indicating enhanced auditory attention.
  • BIC measures objectively reflected neurophysiological changes consistent with behavioral improvements.

Conclusions:

  • The binaural interaction component (BIC) of the middle latency response (MLR) can objectively assess neurophysiological changes from auditory lateralization training in children with (C)APD.
  • Auditory lateralization training is effective in improving binaural processing and auditory attention in children with (C)APD.
  • Objective MLR measures provide a reliable method to evaluate the efficacy of auditory training interventions.

Keywords:
Auditory trainingBinaural interactionMiddle latency responseSpatial hearing

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