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Otolaryngologic Clinics of North America Apr 1991This article provides the basis for the techniques and interpretation of audiologic tests useful in evaluation of the patient with pseudohypacusis. Differences between... (Review)
Review
This article provides the basis for the techniques and interpretation of audiologic tests useful in evaluation of the patient with pseudohypacusis. Differences between the childhood and adult forms of the problem are discussed. The indications for currently popular conventional and special tests are presented. These include both behavioral and electrophysiologic measures for assessing auditory function.
Topics: Audiometry; Audiometry, Evoked Response; Audiometry, Pure-Tone; Audiometry, Speech; Auditory Threshold; Hearing Disorders; Humans; Terminology as Topic
PubMed: 1857618
DOI: No ID Found -
Ear and Hearing Jul 2013Wideband tympanometry (WT) measurements provide a view of the acoustic response properties of the middle ear over a broad range of frequencies and ear-canal pressures.... (Review)
Review
Wideband tympanometry (WT) measurements provide a view of the acoustic response properties of the middle ear over a broad range of frequencies and ear-canal pressures. These measurements show sensitivity to trends in ear-canal/middle ear maturation and changes in middle ear status as a result of different types of dysfunction. While results from early WT work showed improvements over ambient wideband tests in terms of test performance for identifying middle ear dysfunction and conductive hearing loss (CHL), more recent studies have shown high, but similar test performance for both ambient and tympanometric wideband tests. Case study and group results presented in this article, demonstrating the sensitivity of WT to middle ear dysfunction, CHL, and maturational changes in the middle ear, are promising and suggest the need for additional investigations in individual subjects and large subject populations. Future research should focus on identifying key predictors of developmental trends, middle ear dysfunction, and CHL in an effort to develop middle ear tests with high sensitivity and specificity. Technological advances, more accessibility to equipment, and evolving data analysis techniques should encourage progress in the areas of WT research and clinical application.
Topics: Acoustic Impedance Tests; Audiometry; Humans; Terminology as Topic
PubMed: 23900184
DOI: 10.1097/AUD.0b013e31829c7250 -
Annales D'oto-laryngologie Et de... 1989The authors have performed a series of high frequency audiograms in order to assess its value in routine otological practice. Initially, they conducted a statistical...
The authors have performed a series of high frequency audiograms in order to assess its value in routine otological practice. Initially, they conducted a statistical study on subjects with so-called normal hearing in order to establish standardised normal values. As in the earlier studies, a physiological alteration was observed in the high frequencies which was progressively accentuated with age. Audiometric results should therefore always be considered in relation to the patient's age. A standard graph is proposed for the presentation of the results. The authors subsequently performed high frequency audiometry in patients with internal ear disorders. High frequency audiometry allowed early detection of an alteration in the internal ear, when conventional audiometry was normal. The authors believe that high frequency audiometry should be part of the otological assessment as its allows early detection of internal ear disease.
Topics: Adult; Age Factors; Analysis of Variance; Audiometry; Female; Hearing Disorders; Hearing Loss, Noise-Induced; Humans; Labyrinth Diseases; Male; Middle Aged; Reference Standards
PubMed: 2719436
DOI: No ID Found -
Audiology : Official Organ of the... 1984The authors consider the reasons why the induction coil audiometer was not widely adopted in clinical practise. The conclusion is that they offered little relevance to...
The authors consider the reasons why the induction coil audiometer was not widely adopted in clinical practise. The conclusion is that they offered little relevance to the management of hearing-impaired patients at that time, bearing in mind the state of therapeutics, surgery and contemporary aids to hearing.
Topics: Audiometry; England; Germany; History, 19th Century; United States
PubMed: 6372769
DOI: 10.3109/00206098409072835 -
Journal of Speech and Hearing Research Oct 1991On the basis of recent advances in auditory physiology, new tests of cochlear function have been developed using measures of otoacoustic emissions. In the present... (Review)
Review
On the basis of recent advances in auditory physiology, new tests of cochlear function have been developed using measures of otoacoustic emissions. In the present report, the clinical potential for each of the four basic emission types is examined. In addition, the practical advantages of examining the ear with two specific types of evoked emissions, transiently evoked and distortion-product otoacoustic emissions, are reviewed in detail. Finally, the future role of tests of otoacoustic emissions in the diagnosis of hearing impairment is discussed. The current view is the evoked emissions hold promise as an essential part of the clinical examination of the auditory system.
Topics: Audiometry; Audiometry, Evoked Response; Cochlea; Evoked Potentials, Auditory; Humans
PubMed: 1749251
DOI: 10.1044/jshr.3405.964 -
Journal of the American Academy of... Jan 2012In clinical practice, hearing thresholds are measured at only five to six frequencies at octave intervals. Thus, the audiometric configuration cannot closely reflect the... (Clinical Trial)
Clinical Trial
BACKGROUND
In clinical practice, hearing thresholds are measured at only five to six frequencies at octave intervals. Thus, the audiometric configuration cannot closely reflect the actual status of the auditory structures. In addition, differential diagnosis requires quantitative comparison of behavioral thresholds with physiological measures, such as otoacoustic emissions (OAEs) that are usually measured in higher resolution.
PURPOSE
The purpose of this research was to develop a method to improve the frequency resolution of the audiogram.
RESEARCH DESIGN
A repeated-measure design was used in the study to evaluate the reliability of the threshold measurements.
STUDY SAMPLE
A total of 16 participants with clinically normal hearing and mild hearing loss were recruited from a population of university students.
INTERVENTION
No intervention was involved in the study.
DATA COLLECTION AND ANALYSIS
Custom developed system and software were used for threshold acquisition with quality control (QC). With real-ear calibration and monitoring of test signals, the system provided accurate and individualized measure of hearing thresholds that were determined by an analysis based on signal detection theory (SDT). The reliability of the threshold measure was assessed by correlation and differences between the repeated measures.
RESULTS
The audiometric configurations were diverse and unique to each individual ear. The accuracy, within-subject reliability, and between-test repeatability are relatively high.
CONCLUSIONS
With QC, the high-resolution audiograms can be reliably and accurately measured. Hearing thresholds measured as ear canal sound pressures with higher frequency resolution can provide more customized hearing-aid fitting. The test system may be integrated with other physiological measures, such as OAEs, into a comprehensive evaluative tool.
Topics: Adult; Audiometry; Auditory Threshold; Calibration; Diagnosis, Differential; Female; Hearing Loss; Humans; Male; Middle Aged; Quality Control; Reproducibility of Results; Signal Detection, Psychological; Young Adult
PubMed: 22284839
DOI: 10.3766/jaaa.23.1.4 -
Otolaryngologia Polska = the Polish... 1961
Topics: Audiometry; Audiometry, Speech; Humans
PubMed: 13718353
DOI: No ID Found -
Acta Oto-laryngologica. Supplementum 1988Normative values have been obtained for high-frequency air- and electric bone-conduction thresholds in different age groups. Reproducibility with both methods is of the...
Normative values have been obtained for high-frequency air- and electric bone-conduction thresholds in different age groups. Reproducibility with both methods is of the same order of magnitude as with conventional audiometry. The two thresholds can be compared and the air-conduction/electric bone-conduction gap obtained by transforming the electric bone-conduction values to a dB notation by means of a formula containing a frequency-dependent constant.
Topics: Adult; Aged; Audiometry; Audiometry, Pure-Tone; Auditory Threshold; Bone Conduction; Humans; Middle Aged; Reference Values
PubMed: 3201942
DOI: 10.3109/00016488809106401 -
Scandinavian Audiology 1983Ten normal-hearing subjects were evaluated with both manual and computer controlled audiometry using the ascending threshold determination method as proposed by ISO. The...
Ten normal-hearing subjects were evaluated with both manual and computer controlled audiometry using the ascending threshold determination method as proposed by ISO. The study shows that the thresholds obtained with the two different techniques correlate well and that standard deviations for the test--retest difference are significantly lower in the computer-controlled situation. The results also indicate that computer-controlled audiometry may be of importance in general clinical applications giving rapid and reliable threshold determination.
Topics: Adult; Audiometry; Audiometry, Pure-Tone; Auditory Threshold; Computers; Female; Humans; Male; Microcomputers; Software
PubMed: 6689085
DOI: 10.3109/01050398309076248 -
Audiology : Official Organ of the... 1973
Topics: Audiometry; France; Hearing; History, 20th Century
PubMed: 4592090
DOI: No ID Found