Ear-Canal Reflectance, Umbo Velocity, and Tympanometry in Normal-Hearing Adults
نویسندگان
چکیده
منابع مشابه
Comparison of ear-canal reflectance and umbo velocity in patients with conductive hearing loss: a preliminary study.
OBJECTIVE The goal of the present study was to investigate the clinical utility of measurements of ear-canal reflectance (ECR) in a population of patients with conductive hearing loss in the presence of an intact, healthy tympanic membrane and an aerated middle ear. We also sought to compare the diagnostic accuracy of umbo velocity (VU) measurements and measurements of ECR in the same group of ...
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Sweep frequency tympanograms compensating for ear canal volume at 200 and -400 daPa were obtained on 106 ears of 53 subjects during four different sessions. Resonance frequencies were obtained and analyzed to determine normative data, resonance differences between the compensation methods, and the interaction effect of running consecutive tympanograms. There were no gender or interaural differe...
متن کاملAcoustic Immittance, Absorbance, and Reflectance in the Human Ear Canal.
Ear canal measurements of acoustic immittance (a term that groups impedance and its inverse, admittance) and the related quantities of acoustic reflectance and power absorbance have been used to assess auditory function and aid in the differential diagnosis of conductive hearing loss for over 50 years. The change in such quantities after stimulation of the acoustic reflex also has been used in ...
متن کاملEar and Hearing Effects of Negative Middle Ear Pressure on Wideband Acoustic Immittance in Normal- Hearing Adults
Abstract: Objectives: Wideband acoustic immittance (WAI) measurements are capable of evaluating middle ear performance over a wide range of frequencies relevant to human hearing. It is known that static pressure in the middle ear cavity affects sound transmission to the cochlea, but only a few data sets exist to quantify the relationship between middle ear transmission and pressure level. The p...
متن کاملThe path of a click stimulus from ear canal to umbo.
The tympanic membrane (TM) has a key role in transmitting sounds to the inner ear, but a concise description of how the TM performs this function remains elusive. This paper probes TM operation by applying a free field click stimulus to the gerbil ear and exploring the consequent motions of the TM and umbo. Motions of the TM were measured both on radial tracks starting close to the umbo and on ...
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ژورنال
عنوان ژورنال: Ear & Hearing
سال: 2012
ISSN: 0196-0202
DOI: 10.1097/aud.0b013e31822ccb76