Ear-canal wideband acoustic transfer functions of adults and two- to nine-month-old infants.

ABSTRACT:

Objectives

Wideband acoustic transfer functions (WATF) measured in the ear canal have been shown to be effective in the diagnosis of middle ear dysfunction in adults and in newborn infants. Although these measures would be diagnostically useful in older infants, normative data on a large number of older infants are lacking. The goal of this study was to provide such normative data.

Design

The WATF of 458 infants aged 2 to 9 mos and of 210 adults were obtained. Wideband reactance (X), resistance (R), and energy reflectance (ER) were measured in third-octave bands between 250 and 8000 Hz. The effects of age and gender on the WATF were examined, and the WATF in the left and right ears were compared. Test-retest reliability was assessed, and the relationship between the 226-Hz t

SUBMITTER: Werner LA 

PROVIDER: S-EPMC4900454 | biostudies-literature | 2010 Oct

REPOSITORIES: biostudies-literature