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العنوان
Cochlear Microphonics in Central Auditory Processing Disorders /
المؤلف
Al-Masry, Eman Gamal EL-Din Rashad.
هيئة الاعداد
باحث / ايمان جمال الدين رشاد المصرى
مشرف / ايناس احمد قلقيله
مناقش / عفاف احمد عماره
مناقش / تقوى عدلى جبر
الموضوع
Audiology.
تاريخ النشر
2016.
عدد الصفحات
p 94. :
اللغة
الإنجليزية
الدرجة
ماجستير
التخصص
الطب (متفرقات)
تاريخ الإجازة
1/1/2016
مكان الإجازة
جامعة طنطا - كلية الطب - Audiology
الفهرس
Only 14 pages are availabe for public view

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from 135

Abstract

Auditory processing disorder is a highly heterogeneous disorder. It involves a breakdown of various aspects of auditory processing. These result in complaints and symptoms vary considerably across populations (Moore,2006).According to ASHA 2005: Auditory processing disorder refers to difficulties in the processing of auditory information in the central nervous system (CNS) as demonstrated by poor performance in one or more of the following skills: sound localization and lateralization; auditory discrimination; auditory pattern recognition; temporal aspects of audition,including temporal integration, temporal discrimination (e.g., temporal gap detection), temporal ordering, and temporal masking; auditory performance in competing acoustic signals (including dichotic listening); and auditory performance with degraded acoustic signals.Outer hair cell pathology can lead to both spectral and temporal processing deficits (Oxenham and Bacon, 2003). Top-down descending pathways have been shown to influence sites further down the auditory pathways (Banai et al., 2009). Moreover, there is a number of central origin of possible dysfunction, including the descending auditory pathways (Moore,2012). In the presence of background noise, MOC inhibition of OHC activity sharpens cochlear tuning, promoting better spectral resolution which is critical for optimal auditory processing (Boothalingam, 2014). APD children demonstrate low activity of the MOCB system that may indicate a reduced auditory inhibitory function (Muchnik et al., 2004