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Auditory and Vestibular Research، جلد ۲۳، شماره ۳، صفحات ۷۵-۸۱
عنوان فارسی
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عنوان انگلیسی Comparing human electrocochleography responses to click and chirp stimuli
چکیده انگلیسی مقاله Background and Aim: It is not known how electrocochleography components of action potentials (AP) and summating potentials (SP) are changed in response to CE-chirp stimulus using extratympanic electrodes. This study was done for comparing summating potentials and action potentials specifications in response to CE-chirp and click stimuli. Methods: Electrocochleography components of action potentials and summating potentials were recorded in 16 normal hearing subjects (8 men and 8 women) aged 22-30 years (mean: 26.7 with SD 2.5 years) with audiometric (250-8000 Hz) hearing thresholds of 15 dB HL or better in response to click and CE-chirp stimulus at 90 dB nHL. Amplitude, duration, latency and area of summating potentials and action potentials and SP/AP amplitude and area ratios were compared. Results: Among the measured parameters, action potentials amplitude in response to CE-chirp stimulus (0.41 with SD 0.26 µV) was significantly smaller than action potentials amplitude in response to click (0.61 with SD 0.29 µV) stimulus (p< 0.005). Relative frequency of detecting summating potentials in response to CE-chirp (68.7%) was lower than (100%) click (p< 0.005). Conclusion: Recording electrocochleography component of summating potentials and action potentials with CE-chirp stimulus at high intensity level in normal hearing individuals shows no advantage over click stimulus. Small amplitude of summating potentials as a major problem of extratympanic electrocochleography cannot be solved using CE-chirp stimulus.
کلیدواژه‌های انگلیسی مقاله
نویسندگان مقاله مینو کریمی | minoo karimi
department of audiology, faculty of rehabilitation sciences, shahid beheshti university of medical sciences, tehran, iran

سازمان اصلی تایید شده: دانشگاه علوم پزشکی شهید بهشتی (Shahid beheshti university of medical sciences)

محمد ابراهیم مهدوی زفرقندی | mohammad ebrahim mahdavi zafarghandi
department of audiology, faculty of rehabilitation sciences, shahid beheshti university of medical sciences, tehran, iran

سازمان اصلی تایید شده: دانشگاه علوم پزشکی شهید بهشتی (Shahid beheshti university of medical sciences)

هما زرین کوب | homa zarrinkoob
department of audiology, faculty of rehabilitation sciences, shahid beheshti university of medical sciences, tehran, iran

سازمان اصلی تایید شده: دانشگاه علوم پزشکی شهید بهشتی (Shahid beheshti university of medical sciences)

مژده صفوی | mozhdeh safavi
department of biostatistics, faculty of rehabilitation sciences, shahid beheshti university of medical sciences, tehran, iran

سازمان اصلی تایید شده: دانشگاه علوم پزشکی شهید بهشتی (Shahid beheshti university of medical sciences)

سید مهدی طباطبایی | seyyed mehdi tabatabaee


نشانی اینترنتی http://avr.tums.ac.ir/index.php/avr/article/view/246
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زبان مقاله منتشر شده en
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