In-depth information on different tests, hearing loss and hearing aids
Otoacoustic Emissions (OAE’s)
The development of OAE’s enables us to asses a child’s hearing without an active response from them. OAE’s can be defined as acoustic energy produced by the cochlea and recorded in the outer ear canal. They are thought to occur as a result of movement of the outer hair cells.
To record an OAE a probe tip is placed in the ear canal. The probe tip produces a click stimulus which travels down into the cochlea and stimulates the hair cells. The movements of the hair cells cause an ‘echo’ which travels back to the outer ear where it is recorded by a microphone in the probe tip. OAE’s can be recorded in patients with hearing thresholds of 30dBHL or better. They are used as a test of normal hearing.
*It is important to note that a small percentage of patients do not have recordable OAE’s.
OAE’s are used in Newborn Hearing Screening.
Visual Reinforcement Audiometry
It is suitable for children aged 6 – 36 months The child must be able to sit unsupported or with minimal support & have good head control The child is conditioned to turn to a visual reinforcer, such as an illuminated toy in a box, when an auditory signal is presented (via insert phones or a loudspeaker).
VRA allows us to accurately assess the hearing status of a young child over a number of different frequencies.
It is suitable for children aged 2 – 5 years. The child is conditioned to wait for auditory stimulus & then respond using a play activity. Most children aged 4 and above are able to respond as an adult, by pressing a button, raising a hand or saying ‘yes’.
At Audico we can carry out OAE screening, VRA and Play Audiometry on children of all ages.
We specialise in:
Ear Examination and Investigation
Adult and Children Hearing Assessments
Tinnitus Assessment and Therapy
Newborn Hearing Screening
State of the Art Digital Hearing Aids