ISSN 2667-7466 | E-ISSN 2667-7474
Original Article
Does the Efferent Auditory System Have a Role in Children with Specific Learning Disabilities?
1 Department of Otorhinolaryngology, Başkent University School of Medicine, Ankara, Turkey  
2 Department of Otorhinolaryngology, Gülhane Training and Research Hospital, Ankara, Turkey  
Turk Arch Otorhinolaryngol 2019; 57: 30-33
DOI: 10.5152/tao.2019.3748
Key Words: Otoacoustic emissions, specific learning disability, outer hair cell, medial olivo-cochlear response
Abstract

 

Objective: This study aimed to compare the baseline transient otoacoustic emission (t-OAE) amplitudes and medial olivo-cochlear (MOC) efferent activity in children with specific learning disability (SLD) and children with normal development.

 

Methods: The study was conducted in two groups. The patient group included 30 children aged 6 to 10 years and diagnosed with SLD, and the control group included 30 children in the same age range without SLD. The patient group included eight males and 22 females, and the control group included 14 females and 16 males. t-OAE and contralateral suppression test were performed in both groups.

 

Results: In the first t-OAE measurements, a statistically significant difference was observed between the patient and the control group at frequencies of 1400, 2000, 2800, and 4000 Hz, but no such difference was observed at 1000 Hz frequency. In the control group, significantly better emission amplitudes were observed. No differences were found at any frequency between the patient and the control groups after suppression. When the subjects in the two groups were compared among themselves, there was a statistically significant difference between the before and after suppression scores in the patient group except at 4000 Hz. Likewise, an important difference was also observed in all frequencies in the control group.

 

Conclusion: This study shows that suppression effects of t-OAE on children diagnosed with SLD and children with no SDL are not significantly different.

 

 

Amaç: Bu çalışmanın amacı, Özgül Öğrenme Güçlüğü (ÖÖG) olan çocuklar ile normal gelişim gösteren çocuklar arasında bazal transient otoakustik emisyon (t-OAE) amplitüdleri ve medial olivo-koklear (MOC) efferent aktivitesinin karşılaştırılmasıdır.

Yöntemler: Çalışmaya ÖÖG tanısı alan 6-10 yaş arası 30 çocuk (deney grubu) ve ÖÖG olmadığı tespit edilmiş aynı yaşlarda 30 çocuk (kontrol grubu) dâhil edildi. Deney grubu 8 erkek ve 22 kızdan, kontrol grubu ise 14 kız ve 16 erkekten oluştu. Her iki gruba da t-OAE ve kontralateral supresyon testi yapıldı.

 

Bulgular: İlk t-OAE ölçümlerinde hasta ve kontrol grubu arasında 1000 Hz frekansı hariç 1400, 2000, 2800 ve 4000 Hz frekanslarında istatistiksel olarak anlamlı fark izlenmiştir. Kontrol grubunda emisyon amplitüdleri anlamlı olarak daha iyi gözlenmiştir. Supresyon sonrası ise hasta ve kontrol grubu arasında hiçbir frekansta anlamlı farklılık gözlenmemiştir. Gruplar kendi içinde karşılaştırıldığında, hasta grubunda 4000 Hz hariç diğer frekanslarda supresyon öncesi ve sonrası anlamlı fark gözlenirken, kontrol grubunda supresyon öncesi ve sonrasında tüm frekanslarda anlamlı fark izlenmiştir.

 

Sonuç: Bu çalışmada ÖÖG olan çocuklarda t-OAE'nin kontrlateral supresyonu normal çocuklara göre anlamlı fark göstermemiştir.

 

Cite this article as: Demirel Aksoy E, Culhaloğlu B, Akın Öcal FC, Erbek SS, Erbek HS. Does the Efferent Auditory System have a Role in Children with Specific Learning Disabilities?. Turk Arch Otorhinolaryngol 2019; 57(1): 30-3.

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