Hearing

- Conductive hearing loss

- Sensorineuronal

   - cochlear

   - retrocochlear

- Central (upward nc.cochlearis)

   - acouctic agnosia, word deafness

   - developmental dysfasia (SLI)

- Sensorineuronal (cochlear)

   2/3 congenital

      syndromatic (Alport AD, Usher AR)

      non-syndromatic (Cx 26…)

      teratogen.infl. (4.-12. w.)

   1/3 acquired

      sudden deafness, infections, noise

      presbyacusis, ototoxicity, Meniér

Examination of hearing

Behavioral: speech, whisper, tuning forks

                               tone audiometry, speech audiometry

Objective: impedance measurement

                               OAE´s (Otoacoustic Emissions)

                               ABR (Auditory Brainstem Response), SSEP (Steady-State auditory Evoked Potential)

Hearing instruments

BTE (Behind-The-Ear) + earmould

ITE (In-The-Ear)

BW (Body-Worn)

microphone,receiver,amplifier,chips,

Open ear hearing aids, BAHA, middle-ear implants

Cochlear implants

Brainstem implants