08291450020 / 09820777498
Grace Hear-Tech Centre is fully equipped with a reliable sound treated room and state of the art diagnostic equipment to ensure excellent hearing health care to our clients. We use a combination of objective and subjective tests to fully assess your hearing.
Pure-Tone Audiometry determines the quietest tones that a person can hear at different frequencies, both low and high. The results are plotted on the audiogram. PTA helps in determination of the degree, type and configuration of a hearing loss. The results also help the audiologist determine if the hearing loss is originating from the outer/middle ear or from the inner ear.
Speech Audiometry a speech reception threshold (SRT) test is used to confirm the results of a pure-tone audiometry. This test determines the lowest level at which the patient can recognize words or speech stimuli. Speech audiometry mimics real life situations and assesses the potential to improve your hearing with the use of hearing aids. This also provides information regarding discomfort or tolerance to speech stimuli and information on word recognition abilities. Information gained by speech audiometry can help determine proper gain and maximum output of hearing aids.
Tympanometry It is used to test the condition of the middle ear and mobility of the tympanic membrane and the conduction bones by creating variations of air pressure in the ear canal. Tympanometry permits the distinction between sensorineural and conductive hearing loss.
Acoustic Reflex (stapedial reflex) Acoustic reflex and Tympanometry are commonly used to assess middle ear function. This allows to indirectly assess the middle ear, cochlea, and neural innervation of the stapedius muscle.
Oto-acoustic Emissions (OAE) is a hearing screening test done to check if your baby's hearing is normal at birth or if more testing is needed. It is important to test hearing of new borns to avoid delayed speech in future.
This screening is not painful in any way to your baby. The OAE machine makes a soft clicking sound and soft probe is placed into the ear canals. Soft sounds are played into the ear and when the ear is working normally, thousands of invisible hair cells in the ear move in response to the incoming sound. When the hairs move, they make sounds of their own which leak back out through the ear and are measured by a sensitive microphone located in the probe. When hearing loss exists, the hair cells are damaged and do not emit a sound.
Absent results may also be due to various other reason E.g Ear wax, Debris, insufficient probe seal, background noise etc. In case of absent responses , the baby should retested after 4 weeks . It the results are absent again then ABR (Auditory brainstem response) must be conducted.
Grace Hear-Tech Centre has the latest OAE equipment by International brand ‘Interacoustics’.
Brainstem Evoked response audiometry (BERA) The brainstem evoked response audiometry (BERA) is an objective neurophysiological method for the evaluation of the hearing threshold and diagnosing retrocochlear lesions.The ABR test is performed on an individual in sleep state or at rest. Mild sedation may be used. A series of clicks are presentedto each ear through special earpieces inserted into the ear canals. The audiologist can vary the intensity of the clicks. Theindividual wears a headband which records appropriate brain wave activity. The averaging computer in the ABR unit then analyzes theinformation and it is compared to normal responses. This procedure does not cause any discomfort to the person.
VEMP test is used to determine if certain inner ear structures the saccule, inferior vestibular nerve, and their central brain connections are working normally.