کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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4112767 | 1606032 | 2012 | 6 صفحه PDF | دانلود رایگان |
ObjectiveAuditory neuropathy spectrum disorder (ANSD) is characterized by absent or atypical auditory brainstem responses (ABR), recordable otoacoustic emissions and/or cochlear microphonics. Modification of ABR stimuli is discussed to improve wave V synchronization in ANSD patients.DesignTen ANSD children (seven unilateral) underwent ABR measurement with an alternating stimulus (40.5 s−1), constant rarefaction and condensation stimuli, a reduced click-rate (11.1 s−1) and a chirp-stimulus.ResultsThe results showed no remarkably better synchronization with modified stimuli. Whereas higher levels showed no synchronization, reproducible positive waves at 8 ms (P8) at intensities of 65–85 dB were found in six patients with all stimuli.ConclusionsWe suggest an ipsilateral auditory origin of the positive potentials at 8 ms. They could be characteristic of synchronization abnormalities in some cases of ANSD.
Journal: International Journal of Pediatric Otorhinolaryngology - Volume 76, Issue 5, May 2012, Pages 636–641