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OFFICE TESTING INFORMATION AND PREPARATIONS

 

EEG-Electroencephalogram

AER, BAER-Brainstem Auditory Evoked Response

VER-Visual Evoked Response

EMG-Electromyogram

SER-Somatosensory Evoked Response

 

 

 

 

 

 

EEG-Electroencephalogram

An EEG is a recording of electrical activity of the brain. It is a diagnostic tool used to evaluate seizure disorder, stroke, infections of the central nervous system (encephalitis etc), degenerative disorders (Alzheimer's, Parkinson's), head trauma (accidents), headaches, brain tumors, etc.

The technician will measure, mark, and prep your scalp and place a small metal disk (electrode) in each of the 27 areas. The disks “pick-up” the electrical activity of the brain. This activity is transmitted through the wires to the EEG computer where they are amplified sufficiently to be seen on the recording.

The procedure takes approximately 45 -60 minutes. Activations will be done to stimulate the brain: Eye opening and closing, flashing a strobe light at different speeds, and over-breathing for about 3 minutes.

PREP:

Hair should be clean and dry with no styling products (conditioner, gels or sprays).

No caffeine on the day of testing.

For women-Makeup will be removed in certain areas on the forehead and temples.

 

 

 

 

 

 

 

AER, BAER-Brainstem Auditory Evoked Response

AER's are used to evaluate the auditory nervous system (including the brainstem) for acoustic neuromas, brainstem tumors, hearing disorders, demyelinating diseases, etc.

As with all testing, the technician will measure, mark and prep the scalp for the electrodes. Four will be used for the AER, two on the scalp and one behind each ear. Headphones will be placed over the ears to deliver a series of clicks to each ear individually. This sound is the stimulus.

The procedure takes approximately 15-30 minutes.

PREP:

Hair should be clean and dry with no styling products (conditioner, gels or sprays).

No caffeine on the day of testing.

 

 

 

 

 

 

 

 

 

VER-Visual Evoked Response

VER's evaluate the visual nervous system for optic tumors, retinal disorders, and demyelinating diseases such as Multiple Sclerosis.

As with other testing, the technician will measure, mark, and prep the scalp for the electrodes. Six will be used for the VER, 5 on the scalp and one behind the left ear. Each eye will be tested individually. An eye patch will be placed over the non-test eye, you will be seated in front of a computer monitor and a checkerboard pattern will be visible, this is the stimulus. You will be asked to focus on a small red pulsating dot in the middle of the screen for a few minutes with each eye separately, while in the background the checkerboard squares will be moving.

The procedure takes approximately 15-30 minutes.

PREP:

Hair should be clean and dry with no styling products (conditioner, gels or sprays).

No caffeine on the day of testing.

 

 

 

 

 

 

 

EMG-Electromyogram

EMG's evaluate the nerve pathway by placing metal recording electrodes on the nerve and muscle ending on the hand, feet, face (called a Blink) or other various points along the nerve pathway. The nerve is then stimulated with small, brief electrical shocks, which are recorded on the computer screen and calculated. The brief stimulus to the nerve will cause a slight “jump” to the extremity being tested and can be slightly uncomfortable, but brief. Several nerves are tested for each extremity. After the nerve conduction testing is completed by the technician, Dr. Silberman will do a muscle test by placing a fine, flexible wire partially in the muscle. He will listen and observe the sound and tracing made by each muscle tested to see if the muscle looks and sounds healthy.

The procedure takes approximately 30-60 minutes depending on how many extremities are tested.

PREP:

No lotion on the extremity tested.

Wear clothing you change out of easily as you will be asked to put on a gown.

No jewelry.

For facial EMG (Blink)-No makeup.

 

 

 

 

 

 

 

SER-Somatosensory Evoked Response

SER's evaluate the nerve pathway from the peripheral nerve through the spine to the somatosensory region of the brain. (Somato = body, Sensory = reception and transmission of the sense impressions). SER's evaluate spinal cord injuries or disease, neuro-musclar disease, and demyelinating diseases.

As with other testing, the technician will measure, mark, and prep the scalp and prep various other points along the nerve pathway from the arm and leg to the brain. A small electrical current is applied to the skin overlying a nerve or nerves on the arm or leg. The electrical current is the stimulus.

The procedure takes approximately 1 hour (60 minutes)- 1 ½ hour (90 minutes).

This procedure will be preformed at Porter Hospital – Valparaiso Campus.

PREP:

Hair should be clean and dry with no styling products (conditioner, gels or sprays).

No caffeine on the day of testing.

No lotion on arms or legs.

No jewelry.

Wear clothing you change out of easily as you will be asked to put on a gown.