Auditory Evoked Potentials (ABR, MLR) in children
About
Auditory evoked potentials (ABR – auditory brainstem response and MLR – middle latency response) are non-invasive diagnostic methods used to assess auditory function and the conduction pathway from the inner ear to the brainstem and deeper parts of the brain. These methods are often used in children, including newborns, to detect potential hearing problems or neurological disorders that affect auditory processing.
ABR Test (Auditory Brainstem Response)
The ABR test measures the electrical activity of the auditory nerve and brainstem in response to sound stimuli. It is a reliable method for assessing hearing in children who cannot actively participate in standard audiological tests. It is most commonly used in newborns, premature infants, or children at neuro-risk.
MLR Test (Middle Latency Response)
The MLR test measures the responses of higher parts of the auditory pathway in the brain to sound stimuli. It is used for further assessment of auditory function in children, particularly when it is necessary to evaluate deeper levels of sound processing in the brain.
Treatment
During the test, the child usually sleeps or is in a calm state. Small electrodes are placed on the child's head to record electrical signals in response to sound stimuli played through headphones. The test is completely painless and takes about 30 to 60 minutes.
Result
These methods allow for early detection of hearing impairments, ranging from neurological disorders to problems with the auditory conduction pathway. Early diagnosis enables timely initiation of therapy or the use of hearing aids, ensuring normal development of speech and communication skills in children.
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