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Auditory Lateralization Training Effects on Binaural Interaction Component of Middle Latency Response in Children Suspected to Central Auditory Processing Disorder

  • Yones Lotfi
  • Abdollah Moosavi
  • Farzaneh Zamiri AbdollahiEmail author
  • Enayatollah Bakhshi
Original Article
  • 111 Downloads

Abstract

Many children with central auditory processing disorder (C)APD suffer from spatial processing disorder and benefit from binaural processing training including auditory lateralization training. There are subjective tests for evaluating auditory training effects in children with (C)APD but they rely on patient’s attention and cooperation so there is a need for appropriate objective tests. The aim of present study was investigating effects of auditory lateralization training on binaural interaction component (BIC) of middle latency response (MLR). This study was an analytical interventional study. Sixty children suspected to (C)APD (40 boys and 20 girls) were selected based on inclusion criteria and were divided into two groups: control and training group. Auditory lateralization training included 12 formal sessions under headphone by using interaural time difference and performed as a game. MLR (monaural right ear, monaural left ear and binaural) and monaural selective auditory attention test (mSAAT) tests were performed in all the cases. BIC was calculated by subtracting binaural response from summed monaural responses. Covariance test showed that BIC latency decreased and BIC amplitude increased significantly and mSAAT score increased significantly in training group after auditory lateralization training (p value ≤ 0.001). In present study BIC of MLR had potential to show underlying neurophysiologic changes after auditory lateralization training in children suspected to (C)APD objectively. It is in agreement with behavioral improvements after training (mSAAT improvements).

Keywords

Auditory training Binaural interaction Spatial hearing Middle latency response 

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Copyright information

© Association of Otolaryngologists of India 2018

Authors and Affiliations

  1. 1.Audiology DepartmentUniversity of Social Welfare and Rehabilitation SciencesTehranIran
  2. 2.Otolaryngology DepartmentIran University of Medical SciencesTehranIran
  3. 3.Biostatistics DepartmentUniversity of Social Welfare and Rehabilitation SciencesTehranIran

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