It is used to evaluate the function of the facial and trigeminal nerves and to identify abnormalities affecting the blink reflex pathway.

Small electrodes are placed on the face, and mild electrical stimulation is applied to specific nerves while the blink response is recorded.

You may feel mild discomfort from the electrical stimulation, but the test is generally well tolerated.

Yes, unless your doctor advises otherwise. Inform your doctor about all medications you are taking.

Individuals with facial weakness, facial numbness, abnormal blinking, facial pain, or suspected cranial nerve disorders may be advised to undergo this test.