General and special hearing diagnostics2024-04-15T08:59:10+02:00

General and special hearing diagnostics

Diseases of the sensory organs of the head are common. If dizziness or acute ringing in the ears is present, the ear specialist should initiate further clarification if necessary. Once the ear specialist has carried out the necessary diagnostic procedures, the correct rehabilitation measures can usually be initiated quickly. This also applies to patients who have suffered a whiplash injury. If a traffic accident victim suffers from a functional disorder of the sensory organs of the head after the accident, the ear specialist can clarify and objectify the functional disorders and initiate the necessary rehabilitation measures in good time.

At the ENT Center Lucerne, highly specialized staff carry out complex hearing tests and balance examinations. If a hearing disorder is suspected or if there is acute ringing in the ears (tinnitus), a series of subjective (with the patient’s cooperation) and objective (without the patient’s cooperation) tests are used.

  • Determination of the hearing threshold with the patient’s cooperation (pure-tone audiometry) with or without indirect (tinnitus determination).
  • Determination of speech comprehension with the cooperation of the patient (speech audiometry).
  • Measurement of the stapedius reflex (middle ear muscle reflex). The stapedius reflex triggers a movement of the eardrum. If stimulation is carried out at a sound level of 80-100 dB, a change in pressure in the airtight ear canal (stapedius reflex measurement) can be measured approximately 50 ms after the sound is applied (without the patient’s cooperation).
  • Measurement of acoustic resistance via a pressure pump in the ear canal, which generates positive or negative pressures. The changing reflections on the eardrum can then be recorded with a measuring microphone(tympanogram).
  • Measurement of otoacoustic emissions (abbreviation: OAE, from the Greek. us, otos = ear). The inner ear not only transmits sounds to the auditory nerve, but also emits sounds either spontaneously or in response to an external acoustic stimulus. Using highly sensitive measuring microphones inserted into the ear canal, we can detect the OAE. OAEs reflect the motor activity of the outer hair cells. The outer hair cells are the preamplifier for the inner hair cells when hearing soft sounds. When the ear is exposed to sound, the outer hair cells begin to vibrate. The vibrations in the fluid-filled inner ear result in a passive traveling wave. The outer hair cells amplify this passive traveling wave, named after the groundbreaking work of Nobel Prize winner Georg von Békésy (* June 3, 1899 in Budapest), into an active traveling wave and transmit it to the inner hair cells. This is where the actual hearing takes place, i.e. the conversion of the mechanical sound wave into an electrical signal. As with a vibrating motor, the outer hair cells themselves generate a sound, which can then be measured by the ear via the auditory canal as a sound recording using a special microphone. The frequency and amplitude of the emissions are determined by a subsequent Fourier analysis. Four types of otoacoustic emissions can be distinguished. Typically, two types of OAEs can be measured in the healthy ear: the TEOAE and the DPOAE. These can be measured by our highly specialized staff at the ENT Center Lucerne:
    • Transitory evoked otoacoustic emissions (TEOAE): are triggered (evoked) by a short, broadband sound impulse to the ear.
    • Distortion-produced otoacoustic emissions (DPOAE): also known as distortion products, are triggered by the presentation of two sine tones that are in a certain frequency ratio (2 * f1 – f2). The ear then reacts by emitting a cubic difference tone fdp.
    • Spontaneous otoacoustic emissions (SOAE): occur without any external stimulus.
    • Simultaneously evoked otoacoustic emissions (SEOAE): are triggered by stimulation with a continuous tone.
  • Recordings from the brain in response to stimulation of the ear and measurement of the speed of signal transmission between the ear and brain(Brainstem Evoked Response Audiometry, BERA)

Make an appointment

You are welcome to call us on +41 41 420 6634 or send us a message using this contact form. We will get back to you within the next 48 hours.

    Contact details

    Download V-Card

    All patients operated on by us are given a personal emergency number to call after the operation. In all other cases outside our consultation hours, please contact these emergency numbers.

    Frequently asked questions

    Here we answer the most frequently asked questions

    How is a hearing test carried out?2024-04-15T08:59:25+02:00

    A hearing test, also known as an audiogram, is usually carried out by an ENT specialist to check hearing ability. The process begins with an examination of the outer ear and the ear canal. You will then put on headphones and be exposed to a series of sounds of different frequencies and volumes. You will be prompted to show a reaction when you hear a sound. In some cases, a bone conduction test can be performed, in which a vibration device is placed behind the ear to measure the inner ear’s response to vibrations. The results of the test are presented in an audiogram.

    Why is a hearing test important?2024-04-15T08:59:13+02:00

    A hearing test is important because it checks the quality of your hearing. It can detect hearing loss at an early stage and help to determine the cause, whether it is a temporary blockage or permanent damage. In addition, the test can determine the accuracy of your hearing performance and determine the need for a hearing aid or other treatment. In children, a hearing test can reveal developmental delays or learning difficulties due to hearing problems.

    What is a hearing test?2024-04-15T08:59:16+02:00

    A hearing test is a medical examination used to assess an individual’s hearing performance. It helps to determine the type and degree of a possible hearing loss. The process can include various tests, such as tone audiometry, speech audiometry and otoacoustic emissions. These tests can provide information on whether the hearing loss is sensorineural, caused by damage to the inner ear or auditory nerve, or whether it is caused by conductive hearing loss, i.e. problems with the middle ear. A hearing test is particularly important for people who have symptoms such as tinnitus, dizziness or difficulty hearing in noisy environments. It is also an important step in the diagnosis and treatment of hearing disorders in children.

    How often should I have a hearing test?2024-04-15T08:59:16+02:00

    The frequency of a hearing test depends on several factors. For healthy adults without symptoms, experts recommend a test every two to three years. However, if you already have hearing problems, it may be advisable to have more frequent tests. Children should be checked regularly to detect possible hearing problems at an early stage. Older people and those who are occupationally exposed to noise should be tested annually. It is always advisable to consult a specialist if hearing problems persist. A hearing test is a simple and uncomplicated way of monitoring your hearing quality.

    Can a hearing test help to find a hearing aid?2024-04-15T08:59:16+02:00

    Yes, a hearing test can help you find the right hearing aid. The test can determine the degree of your hearing loss. A hearing aid acoustician can then select the right hearing aid for you based on these results. There are different types of hearing aids that can treat different types of hearing loss. A hearing test is therefore the first step in finding the best possible solution for your hearing problems. It is important that you seek advice from a professional to ensure that you get the right hearing aid.

    What happens after the hearing test?2024-04-15T08:59:15+02:00

    After the hearing test, the audiologist analyzes the results to determine whether hearing loss is present and how severe it is. You will receive a detailed explanation of your hearing performance and possible causes of hearing problems will be discussed. If hearing loss is detected, various treatment options are suggested, ranging from lifestyle adjustments to the use of a hearing aid. It is important that you raise any questions or concerns you may have during this conversation.

    Where can I have a hearing test done?2024-04-15T08:59:14+02:00

    A hearing test can be carried out at various locations. The most common place is with an ear, nose and throat specialist (ENT specialist), but also with non-specialists. Some clinics and hospitals also offer hearing tests. It is important to act quickly if there are signs of hearing loss. A professional hearing test can help determine the cause and severity of the hearing loss and create a suitable treatment plan.