FREQUENTLY ASKED QUESTIONS:

Evoked Potential (EP) Tests – What Are They?

How do I find the EP lab?

How do I reschedule my appointment?

How should I prepare for my test?

What are the different types of EP tests?

Visual Evoked Potential (VEP)

Brainstem Auditory Evoked Potential (BAEP)

Somatosensory Evoked Potential (SEP)

We hope this information has been helpful.  If you have any additional questions please ask them of the professional health care staff responsible for your care.

Evoked Potential (EP) Tests – What Are They?

Your doctor may order one or more Evoked Potential (EP) tests for you. EP tests are done to gather information about parts of your nervous system to help your doctor make a diagnosis or decide proper treatment for you. Tests are performed at the Evoked Potential Laboratory located on the main (ground) floor of the Hofheimer Building.

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How do I find the EP lab?(I will be getting better info. from JoAnne, EP tech.)

Enter the main entrance at East 210th Street Walk straight down and take the second corridor to the left. Continue to the first corridor on the right. Walk straight on until you see a sin above door on the right that says “Evoked Potential Laboratory.

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How do I reschedule my appointment?

If you cannot keep your appointment, please call (718)920-2688.

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How should I prepare for my test?

Wash your hair the night before or morning before the test. Do not put cream or gel on hair. Eat a regular meal.  Do not drink coffee or beverages that contain caffeine. If you take medications, take them the way you usually do.

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What are the different types of EP tests?

Visual Evoked Potential (VEP)

This test checks the electrical signals that travel from the eyes to the brain.  A few small electrodes will be placed on your head.  One eye will be covered with a small eye patch while the other one is tested.  The electrodes are attached to a machine that records how your brain reacts to what you see.  You will be asked to look at a TV screen with a black and white checkerboard display.

  • Please note:  Pleaes bring your glasses or wear your contact lenses if you need them to see properly.

  • The test takes about one hour.

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Brainstem Auditory Evoked Potential (BAEP)

This test checks the electrical signals that travel from the arms and legs to the grain.  Your doctor may have ordered an arm test, a leg test, or both.  A few small electrodes will be placed on your head, on your back, and on your arms and/or legs.  They are attached to a machine that records how your brain reacts to what you feel.  Brief electrical stimuli will be delivered to nerves in your arms and/or legs.  They will make your hand or foot twitch, and you will feel a mild shock-like sensation.  Some people find this a little uncomfortable, but the electrical stimuli are harmless.

  • The test takes about one hour.

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Somatosensory Evoked Potential (SEP)

This test Checks the electrical signals that travel from the Arms and legs to the brain.  Your doctor may Have ordered an arm test, a leg test, or both.  A Few small electrodes will be placed on your head, On your back, and on your arms and/or legs.  They Are attached to a machine that records how your brain reacts to what you feel.  Brief electrical stimuli will be delivered to nerves in your arms and/or legs. They will make your hand or foot twitch, and you will feel a mild shock-like sensation.  Some prople find this a little uncomfortable, but the electrical stimuli are harmless

  • It takes about one hour to do the arm test and two hours for the leg test.

  • Please note:  For a leg test, wear loose clothing that can be rolled up above the knees.

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