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J R Soc Med. 1988 June; 81(6): 338–340.
PMCID: PMC1291627

Selective dysacusis--a preliminary report.


The symptom of poor speech discrimination in the presence of background noise is a well-recognized feature of elevated hearing thresholds due to cochlear damage. Similar symptoms occasionally occur in patients with no detectable audiological abnormality. In a study to evaluate the frequency selectivity of such patients consistent abnormalities were found using an electrophysiological technique based on extratympanic electrocochleography. These findings indicated that frequency specific responsiveness of the cochlea may be affected before conventional behavioural tests reveal abnormalities. This syndrome has been described as selective dysacusis.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.
  • Russell IJ, Sellick PM. Intracellular studies of hair cells in the mammalian cochlea. J Physiol. 1978 Nov;284:261–290. [PubMed]
  • Mason SM, Singh CB, Brown PM. Assessment of non-invasive electrocochleography. J Laryngol Otol. 1980 Jul;94(7):707–718. [PubMed]
  • Evans EF. The frequency response and other properties of single fibres in the guinea-pig cochlear nerve. J Physiol. 1972 Oct;226(1):263–287. [PubMed]
  • Robertson D, Johnstone BM. Aberrant tonotopic organization in the inner ear damaged by kanamycin. J Acoust Soc Am. 1979 Aug;66(2):466–469. [PubMed]
  • Moore BC. Frequency selectivity and temporal resolution in normal and hearing-impaired listeners. Br J Audiol. 1985 Aug;19(3):189–201. [PubMed]

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