Distortion product otoacoustic emission (DPOAE)in tinnitus patients

The aim of this study was to determine the effect of tinnitus (experiment I) and the combined effect of tinnitus and sensorineural hearing loss (experiment II) on the distortion product otoacoustic emission (DPOAE) for two age groups of tinnitus patients. Tinnitus patients with normal earing, along...

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Bibliographic Details
Published in:The Journal of the Acoustical Society of America 2006, Vol.119 (1), p.527-538
Main Authors: Ozimek, E., Wicher, A., Szyfter, W., Szymiec, E.
Format: Article
Language:English
Subjects:
Acoustics
Adolescent
Adult
Age Factors
Aged
Analysis of Variance
Audiometry, Pure-Tone
Audition
Auditory Threshold - physiology
Biological and medical sciences
Case-Control Studies
Exact sciences and technology
Female
Fundamental and applied biological sciences. Psychology
Fundamental areas of phenomenology (including applications)
Hearing Loss, Sensorineural - physiopathology
Humans
Loudness Perception - physiology
Male
Middle Aged
Noise - adverse effects
Otoacoustic Emissions, Spontaneous - physiology
Perception
Perceptual Masking - physiology
Physics
Pitch Perception - physiology
Presbycusis - complications
Presbycusis - physiopathology
Psychology. Psychoanalysis. Psychiatry
Psychology. Psychophysiology
Tinnitus - complications
Tinnitus - physiopathology
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Summary:The aim of this study was to determine the effect of tinnitus (experiment I) and the combined effect of tinnitus and sensorineural hearing loss (experiment II) on the distortion product otoacoustic emission (DPOAE) for two age groups of tinnitus patients. Tinnitus patients with normal earing, along with normal-hearing control subjects, participated in experiment I. They were divided into two age groups, below 50 and above 50 years. Experiment I showed that the DPOAE levels in the tinnitus patients were lower than those in the normal-hearing (nontinnitus) subjects. The differences depended on the frequency and the age of the patients, suggesting the confounding influence of presbyacusis. The second group of tinnitus patients with increasing and notch-like hearing loss participated in experiment II. They were also divided into two age groups, below 50 and above 50 years. The data from experiment II showed that DPOAE activity well reflects the increasing and notch-like hearing loss functions up to about 40 dB HL. The effect of age on the DPOAE level was clearly noted only for the tinnitus patients with clinically normal-hearing thresholds and was ambiguous for the tinnitus patients with hearing loss.
ISSN:0001-4966
1520-8524
DOI:10.1121/1.2141297