Auditory Processing Disorder, Central
Conditions
Keywords
Central auditory processing, Bilateral sensorineural hearing loss, Hearing aids
Brief summary
The purpose of this study is to evaluate the central auditory processing in patients with bilateral sensorineural hearing loss and to observe the change of the central auditory processing ability after using hearing aids.
Detailed description
Screening for recruiting * Among patients who are visiting for hearing disturbance, patients with bilateral sensorineural hearing loss will be included after audiologic tests, history taking and physical examination. * audiologic tests: pure tone audiometry, speech audiometry, impedence audiometry, distortion product otoacoustic emission, auditory brainstem response. Dividing into Hearing aids group and No hearing aids group * The use of hearing aids will be recommended to all included patients. * Hearing aids group: patients who want to be prescribed hearing aids (28 subjects) * No hearing aids group: patients who do not want to be prescribed hearing aids (28 subjects) Audiologic test * Hearing in noise test (HINT), central auditory processing disorder test * at screening, 1, 3, 6, 9 and 12 months after starting hearing aids use
Interventions
DEVICEHearing aids
Using hearing aids for 12 months
Sponsors
Jong Woo Chung
Study design
Allocation
NON_RANDOMIZED
Intervention model
PARALLEL
Primary purpose
DIAGNOSTIC
Masking
NONE
Eligibility
Sex/Gender
ALL
Age
45 Years to No maximum
Healthy volunteers
No
Inclusion criteria
* Adults of age 45 years of older * Bilateral sensorineural hearing loss * Average pure tone audiometry threshold \>= 40dB * Speech discrimination \>= 60% in both ears
Exclusion criteria
* Refusing the study * Medical history of any brain damage or intracranial surgery * Showing signs of central lesion in MRI or neurologic exams * Speech discrimination \< 60% in any ear
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Change from the baseline in the Hearing In Noise Test (HINT) score at 6 months | at screening and 6 months after starting hearing aids use | HINT measures a person's ability to hear speech in quiet and in noise. In the test, the patient is required to repeat sentences both in a quiet environment and with competing noise being presented from different directions. |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| changes from the baseline in central auditory processing disorder test score at 1, 3, 6, 9 and 12 months | at screening, 1, 3, 6, 9, and 12 months after starting hearing aids use | The central auditory processing disorder test is composed of three subtests; duration pattern test, frequency pattern test and dichotic words test. The patient is required to discriminate long duration sound from short one and high frequency sound from low one, and to repeat two words that are given simultaneously. |
| changes from the baseline in the HINT score at 3, 9, and 12 months | baseline, 3, 9 and 12 months | — |
Countries
South Korea
Outcome results
None listed