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Auditory and Vestibular Research، جلد ۲۵، شماره ۱، صفحات ۲۴-۳۱
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| عنوان فارسی |
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| چکیده فارسی مقاله |
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| کلیدواژه‌های فارسی مقاله |
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| عنوان انگلیسی |
The role of age implantation on formants frequency changing in early and late cochlear implanted children: a study based on perceptual and acoustical assessments |
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| چکیده انگلیسی مقاله |
Background and Aim: Age implantation is one of the effective factors on speech production outcomes in cochlear implanted (CI) children. The purpose of this study is to determine the role of age implantation on formant frequencies and production of three Persian vowels including /a/, /u/, /i/ in CI children. Methods: Sixty nine congenitally deaf children who received CI were divided into three groups based on their age implantation. The first and second formant frequencies of vowels, as dependent variables, were measured by SFS software 1.2. The role of children’s age implantation and their gender, as effective factors, were analyzed using a 3 (implantation groups)×2 (gender) two-way ANOVA with a post hoc Bonferroni honest significant difference test in SPSS 16.0. Results: The mean values of F 1 /a/, F 2 /a/, F 2 /u/, F 1 /i/, F 2 /i/ were significantly different among different groups (p< 0.05). 100% of children who received CI before the age of 2 produced vowels correctly. Types of vowel production disorders were mostly nasalization and backing in children who received CI between the ages of 3 to 4 and after age 5. Analysis showed that the effect of age implantation on formant frequencies of vowels was significant (p< 0.05). Conclusion: Early age implantation (before 2) can cause an improvement of vowel production due to enhancement of F 1 and F 2 placement which is related to height and back-to-front movements of the tongue. Also, age implantation predicts the quality of vowel production. |
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| کلیدواژه‌های انگلیسی مقاله |
Cochlear implant,age implantation,formant frequency,vowel |
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| نویسندگان مقاله |
پیمان زمانی | peyman zamani
hearing and speech research center, ahvaz jundishapur university of medical sciences, ahvaz, iran
سازمان اصلی تایید شده: دانشگاه علوم پزشکی جندی شاپور اهواز (Ahvaz jundishapur university of medical sciences)
مسعود متصدی زرندی | masoud motasaddi zarandy
otorhinolarygology research center, tehran university of medical sciences, tehran, iran
سازمان اصلی تایید شده: دانشگاه علوم پزشکی تهران (Tehran university of medical sciences)
پدرام برقعی | pedram borghei
otorhinolarygology research center, tehran university of medical sciences, tehran, iran
سازمان اصلی تایید شده: دانشگاه علوم پزشکی تهران (Tehran university of medical sciences)
حسین رضایی | hossein rezai
musculoskeletal rehabilitation research center, ahvaz jundishapur university of medical sciences, ahvaz, iran
سازمان اصلی تایید شده: دانشگاه علوم پزشکی جندی شاپور اهواز (Ahvaz jundishapur university of medical sciences)
فرزاد موبدشاهی | farzad moubedshahi
otorhinolarygology research center, tehran university of medical sciences, tehran, iran
سازمان اصلی تایید شده: دانشگاه علوم پزشکی تهران (Tehran university of medical sciences)
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| نشانی اینترنتی |
http://avr.tums.ac.ir/index.php/avr/article/view/91 |
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| کد مقاله (doi) |
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| زبان مقاله منتشر شده |
en |
| موضوعات مقاله منتشر شده |
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| نوع مقاله منتشر شده |
Research Article(s) |
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