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A brainstem auditory evoked response (BAER) test measures how your brain processes the sounds you hear. The BAER test records your brainwaves in response to clicks or other audio tones that are played for you. The test is also called a brainstem auditory evoked potentials (BAEP) or auditory brainstem response (ABR) test.
A visual evoked potential is an evoked potential caused by a visual stimulus, such as an alternating checkerboard pattern on a computer screen. Responses are recorded from electrodes that are placed on the back of your head and are observed as a reading on an electroencephalogram (EEG).
A video EEG (electroencephalograph) records what you are doing or experiencing on video tape while an EEG test records your brainwaves. The purpose is to be able to see what is happening when you have a seizure or event and compare the picture to what the EEG records at the same time. Other names for video EEG tests include: EEG telemetry, EEG monitoring, or video EEG monitoring. Usually, these terms mean the same thing.