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Öğe Assessment of the Speech Intelligibility Performance of Post Lingual Cochlear Implant Users at Different Signal-to-Noise Ratios Using the Turkish Matrix Test(2016) Polat, Zahra; Bulut, Erdoğan; Ataş, AhmetBackground: Spoken word recognition and speech perception tests in quiet are being used as a routine in assessment of the benefit which children and adult cochlear implant users receive from their devices. Cochlear implant users generally demonstrate high level performances in these test materials as they are able to achieve high level speech perception ability in quiet situations. Although these test materials provide valuable information regarding Cochlear Implant (CI) users' performances in optimal listening conditions, they do not give realistic information regarding per-formances in adverse listening conditions, which is the case in the everyday environment.Aims: The aim of this study was to assess the speech intelligibility performance of post lingual CI users in the presence of noise at different signal-to-noise ratio with the Matrix Test developed for Turkish language.Study Design: Cross-sectional study.Methods: The thirty post lingual implant user adult subjects, who had been using implants for a minimum of one year, were evaluated with Turkish Matrix test. Subjects' speech intelligibility was measured using the adaptive and non-adaptive Matrix Test in quiet and noisy environments.Results: The results of the study show a correlation between Pure Tone Average (PTA) values of the subjects and Matrix test Speech Reception Thresh-old (SRT) values in the quiet. Hence, it is possible to asses PTA values of CI users using the Matrix Test also. However, no correlations were found be-tween Matrix SRT values in the quiet and Matrix SRT values in noise. Similarly, the correlation be-tween PTA values and intelligibility scores in noise was also not significant. Therefore, it may not be possible to assess the intelligibility performance of CI users using test batteries performed in quiet conditions.Conclusion: The Matrix Test can be used to assess the benefit of CI users from their systems in every-day life, since it is possible to perform intelligibility test with the Matrix test using a material that CI us-ers experience in their everyday life and it is possible to assess their difficulty in speech discrimination in noisy conditions they have to cope with.Öğe Contralateral Suppression of Transient Evoked Otoacoustic Emissions in Children with Fluency Disorders(Aves, 2017) Bulut, Erdogan; Yilmaz, Sule; Tas, Memduha; Turkmen, Mehmet Turgay; Polat, ZahraObjective: This study was designed to investigate the auditory system functions of the medial olivocochlear efferents in children with and without fluency disorders. Methods: Twenty-four children aged 6-10 years with fluency disorder (age mean +/- SD=8.1 +/- 1.2) and 15 typically developing control subjects (age mean +/- SD=8.2 +/- 2.5) participated in this study. After obtaining approval of the local ethical committee and informed consents, all participants underwent otoscopic examination, audiological evaluation, Transient Evoked Otoacoustic Emissions and Transient Evoked Otoacoustic Emissions with contralateral suppression. All the participants had normal hearing and middle ear function. Results: When compared rates of TEOAE suppression effect in children with and without fluency disorders, a statistically significant difference was found in children with fluency disorder, especially in the left ear at 2 kHz frequency (p<0.05). There was no statistically significant difference between right and left ears in terms of mean values (p>0.05). Conclusion: Our study suggests that, although there is a difference between the groups in terms of percentage of cases in which suppression is detected at 2 kHz, it is necessary to support the findings with new investigations covering more cases in order to reach a judgment on the functioning of the MOC efferent system in children with fluency disorder.Öğe Konuşmada Akıcılık Sorunu olan Çocuklarda Kontralateral Supresyon Yanıtların Transient Evoked Otoakustik Emisyon Testi ile Değerlendirilmesi(2017) Bulut, Erdoğan; Yılmaz, Şule; Taş, Memduha; Türkmen, Mehmet Turgay; Polat, ZahraAmaç: Bu çalışmada konuşmada akıcılık sorunu olmayan ve olan çocuklarda medial olivokoklear (MOK) efferentlerin işitme sistemi üzerindeki fonksiyonu araştırılmıştır. Yöntemler: Yaşları 6-10 yıl arasında değişen konuşmada akıcılık sorunu olan 24 çocuk (Yaş Ort±SS=8,1±1,2) ve normal gelişim gösteren 15 çocuk (Yaş Ort±SS=8,2±2,5) çalışma kapsamına dahil edilmiştir. Etik kurul onayı ve bilgilendirilmiş onam formu alındıktan sonra, katılımcıların otoskopik muayene, odyolojik inceleme, kontralateral supresyon yokluğunda ve varlığında Transient Evoked Otoakustik Emisyon testleri de- ğerlendirilmiştir. Bulgular: Konuşma akıcılığı sorunu olmayan ve olan çocuklar arasında TEOAE supresyon etkisinin gözlendiği olguların oranları karşılaştırıldı- ğında; konuşma akıcılığı sorunu olan çocuklarda özellikle 2 kHz ölçüm frekansında sol kulaklar için istatistiksel olarak anlamlı bir fark saptanır iken (p<0,05), ortalama değerler açısından karşılaştırıldığında ise sağ ve sol kulaklarda istatistiksel açıdan anlamlı bir fark saptanmamıştır (p>0,05). Sonuç: Çalışmamızda, 2 kHz'de supresyon saptanan olgu yüzdeleri açısından gruplar arasında bir fark bulunmasına rağmen, konuşma akıcılığı sorunu olan çocuklarda MOK efferent sistem işleyişine dair bir yargıda bulunabilmek için bulguların daha fazla olguyu kapsayan yeni araştırma- larla desteklenmesine gereksinim olduğunu düşündürmektedirÖğe Otoacoustic Emissions in Young Children with Autism(Aves, 2017) Tas, Memduha; Yilmaz, Sule; Bulut, Erdogan; Polat, Zahra; Tas, AbdullahOBJECTIVE: The aim of this study is to investigate otoacoustic emissions (OAEs) in young children with autism compared with those in an agematched control group. MATERIALS and METHODS: Thirty-eight children with autism aged 3-6 years and 27 typically developing (normally developing) control subjects participated in this study. All the participants had normal hearing and middle-ear function. Auditory brainstem responses were used to determine the hearing status in the autism group. Transient-evoked otoacoustic emissions (TEOAEs) and distortion-product otoacoustic emissions (DPOAEs) were measured in the two groups. RESULTS: The TEOAE response level was higher in the autism group. Analysis of the DPOAE response showed that the mean emission levels at 1.5, 2, 3, and 6 kHz and signal/noise ratios at 2, 4, 6, and 8 kHz were higher in the autism group (p<0.05). The greatest between-group differences were observed in the DPOAE signal levels at 2, 3, and 6 kHz (p=0.000). No statistically significant difference was found between the noise levels in the autism and control groups (p>0.05). CONCLUSION: The emission responses in the autism group were higher than those in the control group. The increase in DPOAEs at high frequencies may be related to the higher outer cell activation in the autism group. Further studies with larger sample sizes comprising younger children are needed to confirm the result and investigate the possible association between the increased OAEs and auditory sensitivity reported in autism.Öğe Wideband Tympanometry Normative Data for Turkish Young Adult Population(Aves, 2015) Polat, Zahra; Bas, Burcu; Hayir, Duygu; Bulut, Erdogan; Atas, AhmetOBJECTIVE: The aim of this study was to obtain norm values for a young adult Turkish group and to investigate the differences between female and male subjects in terms of wideband tympanometry. MATERIALS and METHODS: One hundred ten young adult volunteers (mean +/- SD: 21.1 +/- 1.9 years) participated in this study. The measurements of wideband tympanometry were performed at octave frequencies between 226 Hz and 8000 Hz using Titan version 3.1. The stimulus level was set at 100 dB peSPL. RESULTS: A cross-sectional study design was used. In total, 218 ears were tested. A significant relationship was found between gender and absorbance values for the frequency band from 3100 Hz to 6900 Hz. The difference between the middle ear resonance frequency and ear canal volume (ECV) of the male and female subjects was also found to be significant. The difference in ECV may result from the difference in body size between the male and female subjects because there was a significant relationship among ECV and the height and weight. CONCLUSION: According to these results, it can be concluded that using separate norms for males and females may increase test specificity and sensitivity for the diagnosis of disorders, such as ossicular discontinuity and tympanic membrane perforations, affecting the high-frequency region.
