A pilot investigation of high-frequency audiometry in obscure auditory dysfunction (OAD) patients.

@article{Shaw1996API,
  title={A pilot investigation of high-frequency audiometry in obscure auditory dysfunction (OAD) patients.},
  author={Gina Shaw and C A Jardine and Peter Fridjhon},
  journal={British journal of audiology},
  year={1996},
  volume={30 4},
  pages={
          233-7
        }
}
The diagnosis of obscure auditory dysfunction (OAD) has been an elusive one, based primarily upon reports of poor speech perception in noise by the patient. Basic audiometric testing reveals hearing within normal threshold limits and it is thought that there may, in part be some subtle psychoacoustic and/or central auditory deficits causing this phenomenon. The use of high-frequency audiometry (HFA) as a test of subclinical cochlear damage has been well documented, especially to monitor the… 
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References

SHOWING 1-10 OF 19 REFERENCES
The clinical assessment of obscure auditory dysfunction--1. Auditory and psychological factors.
We define obscure auditory dysfunction (OAD) as the clinical presentation of reported difficulty understanding speech in the presence of noise accompanied by clinically "normal" hearing thresholds,
The clinical assessment of "Obscure Auditory Dysfunction" (OAD) 2. Case control analysis of determining factors.
TLDR
Stage 2 of a case control study of OAD has confirmed the general finding of stage 1 that OAD is multifactorial; compared with controls, patients as a group have a genuine performance deficit for understanding speech in noise, accompanied by personality-related factors.
A clinical test battery for obscure auditory dysfunction (OAD): development, selection and use of tests.
TLDR
A demographic and clinical characterization of a sample of 50 OAD patients is summarized, new norms on the tests in the version issued, and a test package developed from a case-control research study that can be routinely used with Oad patients is described.
Selective Dysacusis — A Preliminary Report
TLDR
Findings indicated that frequency specific responsiveness of the cochlea may be affected before conventional behavioural tests reveal abnormalities.
Impaired speech perception in noise in patients with a normal audiogram.
TLDR
Patients with normal hearing acuity but complaining of impaired speech perception in noisy conditions were submitted to a test battery including the measurement of the speech reception threshold in noise and central auditory tests and no specific relationship could be found between an elevated SRT in noise or an abnormal central test result.
Difficulties with speech intelligibility in noise in spite of a normal pure-tone audiogram.
A group of 15 patients with complaints of having difficulties in understanding speech, especially in noisy surroundings in spite of (nearly) normal pure-tone audiograms, was subjected to a battery of
Frequency resolution and hearing loss.
TLDR
Three methods of frequency resolution are compared: pure-tone thresholds in broadband noise, pure- Tone thresholds in the presence of a fixedpure-tone masker and psychoacoustical tuning curves, and additionally estimates of temporal integration and of speech intelligibility in noise.
High-frequency air-conduction and electric bone-conduction audiometry. Age and sex variations.
TLDR
Thresholds deteriorated as a function of age, particularly in the HF range, and the males had poorer thresholds than the females, especially in the age groups of 40 and 60 years.
Speech discrimination of patients with high frequency hearing loss.
TLDR
The group with moderate hearing loss achieved significantly poorer discrimination scores at high sound pressure levels than the group with severe hearing loss, a phenomenon not reported before.
Frequency selectivity and temporal resolution in normal and hearing-impaired listeners.
  • B. Moore
  • Medicine
    British journal of audiology
  • 1985
TLDR
It is concluded that the loss of frequency and temporal resolution accompanying cochlear hearing loss is a major cause of the difficulties encountered by the hearing impaired in understanding speech in noisy situations.
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