hearing impairment hearing loss
Conditions
Interventions
None listed
Sponsors
Academisch Medisch Centrum
Eligibility
Age
18 Years to 99 Years
Inclusion criteria
Inclusion criteria: Part 1: 5 normal hearing subjects: - normal hearing (pure-tone air-conduction thresholds not exceeding 20 dB HL at any octave frequency from 250 Hz to 4000 Hz in both ears); - age 18 years or older.;Part 2: Part 2a: 12 normal hearing subjects: - normal hearing (pure-tone air-conduction thresholds not exceeding 20 dB HL at any octave frequency from 250 Hz to 4000 Hz in both ears); - age 18 years or older.;Part 2b: study group: 24 hearing impaired subjects: - hearing impaired (average of pure-tone air-conduction thresholds at 500 Hz, 1000 Hz and 2000 Hz of 35dB HL or higher in both ears); - essentially symmetrical hearing loss (absolute differences not exceeding 15 dB at any octave frequency from 250 Hz to 4000 Hz); - aided speech recognition (monosyllables) >= 75%; - Age distributed over wide range, from 18 years and older.;reference group: 12 normal hearing subjects: - normal hearing (pure-tone air-conduction thresholds not exceeding 20 dB HL at any octave frequency from 250 Hz to 4000 Hz in both ears); - age-matched to hearing impaired group.;all subjects, part 1 and 2: - Dutch as native language.
Exclusion criteria
Exclusion criteria: - Conductive hearing loss (average air-bone gap at 500 Hz, 1000 Hz and 2000 Hz exceeding 10 dB or air-bone-gap exceeding 10 dB at one or more frequencies and abnormal tympanogram in either ear); - serious/relevant medical issues; - other native language; - diagnosed cognitive delay (IQ
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| o Set of relevant listening scenarios o Set of auditory abilities that are critical for spatial speech perception in complex, dynamic environments. o Subset of auditory abilities that are reduced in hearing impaired listeners o Signal attributes that should be provided or compensated in rehabilitation o An efficient set of laboratory tests to adequately assess auditory abilities in realistic and dynamic environments, in both unaided and aided conditions for listeners with hearing impairments. Disseminating results of this study will lead to more appropriate clinical tests and will guide clinicians and hearing aid industries in enabling participation for individuals with impaired hearing. | — |
Secondary
| Measure | Time frame |
|---|---|
| o Sets of recordings from relevant listening scenarios as well as sets of staged laboratory recordings including • a single moving target and stationary located interferers • moving interferers and single stationary located target • multiple spatially separated targets, as in a group conversation o Signal attributes that are used in these scenarios o Setup of real-time head-motion-compensation system (RT-VAS; real time virtual audio space) in Amsterdam | — |
Countries
Netherlands
Outcome results
None listed