What are the methods to check children’s hearing?
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What are the methods to check children’s hearing?
Behavioral Observation Audiometry (BOA)Observes whether infants and young children can detect stimulus sounds and undergo behavioral changes, and initially evaluates the hearing status of infants and young children. It is only suitable for a brief hearing test.
Visual Reinforcement Audiometry (VRA)
Combining auditory signals with light, sound and toys allows the child to establish a conditioned reflex to the stimulus sound, and at the same time attracts the child to turn to the flash of reward Toy. Commonly used headphones or sound fields (speakers) are used for testing, and the subject's subjective hearing threshold results can be obtained, which are only affected by the limitations of the testing environment and the cooperation of children.
Conditioned Reflex Game Audiometry (CPA)
Allowing children to participate in a simple and interesting game, teaching and observing children to make clear and reliable responses to stimulus sounds, can obtain more accurate subjective Hearing threshold.
Standard air-bone conduction pure tone audiometry
Reflects the hearing level of the minimum sound of each frequency that the subject can hear in a quiet environment. Air conduction and bone conduction can be used. Understanding whether hearing is normal or not and the degree and nature of hearing loss is the most intuitive and reliable basis for hearing diagnosis and treatment.
Pediatric speech audiometry
It uses speech signals as acoustic stimulation to comprehensively evaluate hearing ability and determine whether children can hear and understand speech signals. It is more in line with normal human physiological performance. Scientific test.
Automatic Auditory Brainstem Response (AABR)
Evaluates the function of the auditory nervous system, such as the cochlea, auditory nerve, and brainstem auditory pathway. It is less affected by the external auditory canal and middle ear. It is not interfered by the patient's cooperation and is more practical. Because it is a screening test, accurate hearing thresholds cannot be obtained, and the conclusion is only passed or failed.
Auditory brainstem response (ABR)
Auditory evoked potential originates from the eighth cranial nerve and the brainstem auditory structure. It consists of 5 to 7 identifiable wave peaks. It represents the neural function of the auditory pathway and nuclei. It is generally used clinically to check for retrocochlear lesions. Its important parameters include the extension of the latency of each wave and the inter-wave period.It can also be used for patients who are unable to use conventional hearing testing methods, including behavioral audiometry, due to prolonged, obvious differences in interaural latency or inter-wave period, as well as poor waveform differentiation.
Otoacoustic Emissions (OAE)
An objective test to assess whether an infant’s outer hair cells in the cochlea are functioning normally. Again, accurate hearing thresholds cannot be obtained. Otoacoustic emission testing and automated auditory brainstem response testing are good partners for hearing screening. The combination of the two is the best choice for current screening technology.
Acoustic immittance
is an objective test for middle ear function examination. The subject does not need to make any response. Combined with pure tone audiometry, hearing loss can be quantitatively, localized, and qualitatively diagnosed. Hearing aid fitting and evaluation When it comes to hearing aid fitting, children's Hearing Aids place more emphasis on being easy to wear, highly modifiable, and can be continuously adjusted according to different environments and changes in hearing loss.
In terms of hearing assessment:
It is necessary to fully consider children’s own characteristics when conducting hearing assessment, including those that are different from adults: auditory system development level, psychological state, vision, intelligence, reaction ability, etc. Differences in aspects require more experience and skills.
There are many methods of hearing examination. You can speak softly into the child's ear. If the child turns to the direction where you are speaking, it means that there is no problem with the child's hearing. Of course, you can also ring a bell next to a child. If the child can track the sound of the bell, then there will be no problem with the child's hearing.
Of course, the above is a method for parents to self-test their children’s hearing. In fact, the medical method of testing children's hearing is far more sophisticated and accurate than this. The hospital has professional hearing screening equipment. Parents only need to put the instrument next to the child's ear to detect whether there is a problem with the child's hearing. Screening methods can be divided into otoacoustic emission device testing and automated auditory brainstem response testing. These testing methods can comprehensively monitor whether there are any problems with a child's hearing.
Every parent hopes to know as soon as possible whether their child’s hearing is normal. In order to know the answer more accurately, it is best to take the baby to the hospital for hearing screening in time. .