Definitions for "BAER"
Brainstem auditory evoked responses (BAER), also known as auditory brainstem evoked response (ABR), test both the ear and the brain. They measure the timing of electrical waves from the brainstem in response to clicks or tone bursts in the ear. Computer averaging over time to filters background noise to generate an averaged response of the auditory pathway to an auditory stimulus Three waves (1, 3 and 5) are plotted for each ear. The waveform represents specific anatomical points along the auditory neural pathway: the cochlear nerve and nuclei (waves I and II), superior olivary nucleus (wave III), lateral lemniscus (wave IV), and inferior colliculi (wave V). Delays of one side relative to the other suggests a lesion in the 8th cranial nerve between the ear and brainstem or the brainstem itself.
Brainstem auditory evoked response. A painless, diagnostic test in which electrical impulses from the base of the brain are recorded in response to repeated clicks during electroencephalography.
Measures function of Central Nervous System, including pathway from brainstem
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