Auditory Lateralization Ability in children with (Central) Auditory Processing Disorder
March 2014 - Number 19 (7 صفحه - از 31 تا 37)
"All subjects had normal IQ and normal otoscopy: In the present study 9 imaginary positions were simulated in horizontal plane by Interaural Time Difference (ITD) and Interaural Intensity Difference (IID) to evaluate the auditory lateralization performance in normal and children with (central) Auditory Processing Disorder (C)APD. Based on previous studies ITD is more vulnerable to central auditory disorder than IID, and since both cues have different processing mechanisms in the brainstem level, assessment of each mechanism independently provides useful information about the binaural processing ability (2). Therefore the main goal of this study was to precisely assess the auditory lateralization ability in children with (C) APD with ITD and IID method by means of headphones and to compare the results with normal ones. These results are in agreement with Zakaria's study in children (3) and Bobkoff (13) and Aharonson et al (14) and Furst et al (5) and Levine et al (4) studies in adults The majority of (C) APD children had different auditory lateralization patterns in all tests while normal children responses were nearly the same. In a study by Cameron and Dillon in 2008, spatial cues processing ability of (C) APD children were assessed by Listening in spatialized noise sentence –test (LISN-S test) and compared with normal children and children with learning disabilities and dyslexia. Conclusion In present study 9 positions were simulated with a complete semicircular arrangement by the ITD and IID methods to assess the auditory lateralization ability in (C) APD children."
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