Maturation of middle ear transmission in children.
The goal of the current study was to characterize the normative features of wideband acoustic immittance in children for describing the functional maturation of the middle ear in 5 to 12-year-old children. Absorbance and group delay were measured in adults and three groups of children, 5-6, 7-9 and 10-12-year-olds, in a cross-sectional design. Absorbance showed significant effects of the age group in four out of ten center frequencies of one-half-octave bins from 211 to 6000 Hz, while there was no significant effect for group delay at any frequency. Older children (10-12 years) showed absorbance similar to adults. Test-retest reliability was high for absorbance for all age groups. However, group delay was modestly reliable only for adults. We conclude that the middle ear transmission follows a protracted period of maturation for high frequencies and reaches adult-like feature by 10-12 years of age.
Department of Special Education and Communication Disorders, New Mexico State University, Las Cruces, USA. Electronic address: smishra@nmsu.edu.
Srikanta K
SK
Mishra
Department of Special Education and Communication Disorders, New Mexico State University, Las Cruces, USA.
Zoë
Z
Dinger
Department of Special Education and Communication Disorders, New Mexico State University, Las Cruces, USA.
Lauren
L
Renken
D065966:Absorption, Physicochemical; D000161:Acoustic Stimulation; D000328:Adult; D000367:Age Factors; D002648:Child; D002657:Child Development; D002675:Child, Preschool; D003430:Cross-Sectional Studies; D004432:Ear, Middle / Q000254:growth & development*; D005260:Female; D006309:Hearing; D006801:Humans; D008297:Male; D009038:Motion; D011312:Pressure; D013016:Sound; D055815:Young Adult
Absorbance; Group delay; Middle ear transmission; Wideband acoustic immittance