Somatosensory Evoked Potential Study
Somatosensory evoked potential study
The transmission of bodily sensations to the brain and how the brain perceives such feelings are studied in a somatosensory evoked potential test (SEP). An electrical signal is generated by a stimulating electrode that is placed on your arm or leg. Electrodes for recording are attached to your head and/or spine. The data collected by these electrodes may aid in the diagnosis of your condition.
What is a SEP test, and how does it work?
The exam determines how well your peripheral nerves and spinal cord are functioning. It also examines how your brain and/or spinal cord convey information about bodily sensations to your peripheral nerves. It may pinpoint a “signal blockage” in the relay system or the interpretative centre.
How is the SEP test performed?
You will be requested to lie down and stay completely motionless. “Recording electrodes” will be glued or taped to your head, neck, back, or legs by a technician. On your arm or leg, one or two “stimulating electrodes” are also implanted. A pulsating stimulus will begin in one of the stimulating electrodes after each electrode is examined with a metre to verify appropriate functioning. The pulsating will begin again each time a different region is checked. It will take 10 to 15 minutes to test each region.
What happens after a SEP test?
Acetone will be used to remove the electrodes, which will dissolve the adhesive while leaving your hair and skin undamaged. The test findings will be given to you either by the doctor on the day of your appointment or by a copy of the letter delivered to your personal physician.
How long does it take to complete a SEP test?
It takes around half an hour to one hour.
What is the purpose of a SEP test?
If you have numbness, muscular weakness, loss of vibration and position sensation, or symptoms after a spinal or brain injury, this is the test for you.
Is there any discomfort associated with a SEP test?
No. Your muscles may tingle and twitch throughout the test, but you will not feel any discomfort.
Get a consultation on SEP Test with Dr. Poornima Shah – Neurophysiologist call now 9820238329 | 9321366625