The effect of cochlear implantation on voice development

Yıl 2006, Cilt: 16 Sayı: 3, 112 - 121, 30.06.2006

Tolga Kandoğan Uğur Çerçi Levent Olgun Gürol Gültekin Sezaver Alper

Öz

Objectives: The effect of cochlear implantation on voice development in prelingually deaf children was investigated.Patients and Methods: The study included 60 prelingual­ ly deaf children 28 giriş, 32 boys; mean age 68 months; range 37 to 128 months who undervvent cochlear implan­ tation. Voice analyses were made betvveen 6 to 21 months after the first fitting and six months after the baseline. The patients were divided into two groups i according to age younger or older than 48 months and ii to the duration of implant use more or less than 18 months to observe the changes in fundamental frequency Fo , and two for­ mant frequencies Fi and F2 . Forty-seven children 22 giriş, 25 boys; mean age 62 months; range 38 to 118 months with normal speech and language development comprised the control group. İn ali the cases, Fo, F i, and F2 values of the vowel /a/ were studied.Results: İn the patient group, Fo and F2 values signifi- cantly differed betvveen the first and second voice analy­ ses, vvhereas the change in Fi values vvas insignificant.No significant differences vvere found in terms of Fo, Fi and F2 values betvveen the patients younger than 48 months and age-matched Controls; hovvever, Fo and Fi values significantly differed in those older than 48 months vvhile F2 values remained insignificant. Albeit statistically insignificant, Fo, F i, and F2 values approxi- mated normal levels in children in vvhom the duration of implant use exceeded 18 months.Conclusion: Our study confirms that early cochlear implantation and longer implant use result in improved.

Anahtar Kelimeler

Child, cochlear implant, deafness, language devel­ opment, phonetics, speech, voice

Koklear implantasyonun ses gelişimi üzerine etkisi

Öz

Amaç: Koklear implantasyon yapılmış prelingual işitmekayıplı çocuklarda implantasyonun ses gelişimi üzerineolan etkisi araştırıldı.Hastalar ve Yöntemler: Koklear implantasyon yapılmış60 prelingual çocuk 28 kız, 32 erkek; ort. yaş 68 ay,dağılım 37-128 ay çalışmaya alındı. Tüm olguların birinci ses analizi ilk fittingden en az altı, en çok 21 aysonra; ikinci ses analizi ise ilk ölçümden altı ay sonrayapıldı. Olgular ayıca, dört yaş altı ve dört yaş üstü olarak iki grupta ve, fundamental frekans F0 , birinci formant F1 , ikinci formant F değerlerindeki değişimi izlemek amacıyla, 18 aydan az ve 18 aydan uzun süreimplant kullananlar olarak iki grupta değerlendirildi.Kontrol grubu olarak, konuşma ve dil gelişimi normalolan 47 çocuk 22 kız, 25 erkek ort. yaş 62 ay, dağılım38-118 ay alındı. Tüm olgularda /a/ sesinin F0, F1ve Fformantları saptandı. Bulgular: Hasta grubunda F0ve F2değerleri açısındanilk ve altı ay sonraki ölçümler arasında anlamlı fark bulunsa da, F1değerleri açısından anlamlı fark yoktu. Dörtyaş altı hastalar ile aynı yaştaki kontroller arasında F,Fve F2açısından anlamlı fark bulunmadı. Dört yaş üstü hastalarla aynı yaştaki kontroller arasında F0ve F1açısından anlamlı fark vardı, ancak F2değerleri açısından fark bulunmadı. En az 18 aydır implant taşıyan hastalarda F0, F1ve F2değerlerinin normal değerlere, koklear implantı daha az süre taşıyan gruba göre daha çokyaklaştığı görüldü; ancak, bu yakınlaşma anlamlı değildi.Sonuç: Çalışmamız, implantasyonun olabildiğince erkenyapılmasının ve implant kullanım süresinin ses, konuşmave dil gelişimi açısından önemini ortaya koymaktadır

Anahtar Kelimeler

Çocuk, koklear implant, sağırlık, dil gelişimi, fonetik, konuşma, ses

Kaynakça

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