title: Effect of presentation level on diagnosis of dead regions using the threshold equalizing noise test.
abstract: The effect of the level of threshold equalizing noise (TEN) on the diagnosis of dead regions (DRs) was investigated. Participants comprised 23 adults with sensorineural hearing impairment. Masked thresholds were measured monaurally with TEN at 60, 70, 80, and 90 dB HL/ERB(N). Absolute and masked thresholds (with TEN at 80 dB HL/ERB(N)) were retested. The diagnosis was unaffected by TEN level at any frequency for eight of the 13 participants who met the criteria for a DR. For four of the latter, increasing the TEN level changed the diagnosis from DR to no DR, mainly at 1.5 kHz, corresponding to the edge frequency, f(e), of the DR. For one participant with a low-frequency DR, increasing the TEN level changed the diagnosis from no DR to DR, only at 1 kHz. The changes with level were too large to be explained in terms of test repeatability. Overall, the results of the TEN test are usually not affected by TEN level, except for test frequencies close to f(e) when absolute thresholds are near-normal for frequencies adjacent to f(e).
authors.affiliation: Faculté de Medecine, Université Libre de Bruxelles, Brussels, Belgium. emarkess@ulb.ac.be
authors.forename: Emily
authors.initials: E
authors.lastname: Markessis
authors.forename: Hanane
authors.initials: H
authors.lastname: Nasr-Addine
authors.forename: Cécile
authors.initials: C
authors.lastname: Colin
authors.forename: Ingrid
authors.initials: I
authors.lastname: Hoonhorst
authors.forename: Grégory
authors.initials: G
authors.lastname: Collet
authors.forename: Paul
authors.initials: P
authors.lastname: Deltenre
authors.forename: Kevin J
authors.initials: KJ
authors.lastname: Munro
authors.forename: Brian C J
authors.initials: BC
authors.lastname: Moore
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D001301:Audiometry, Pure-Tone / Q000379:methods*; D001309:Auditory Threshold; D006199:Hair Cells, Auditory, Inner / Q000473:pathology; D006319:Hearing Loss, Sensorineural / Q000175:diagnosis*; D006801:Humans; D008875:Middle Aged; D011571:Psychoacoustics; D015203:Reproducibility of Results