CN V - Jaw Jerk

The Jaw jerk reflex is a muscle stretch reflex in which both the sensory and motor nerve fibers are contained in the trigeminal nerve. This is elicited by lightly tapping the relaxed open jaw in a downward direction. The interactive virtual activity allows the user to test the status of trigeminal nerve by observing the patient's response to the strike.

jaw jerk.jpg


Simulation Type

Condition, Using interactive animation

Gender Specific

No, Common for both genders

Condition Simulated


     Jaw reflex absent

     Jaw reflex brisk

     Jaw reflex exaggerated

     Jaw reflex normal


     Click on the ‘Strike’ button to strike on the examiner’s finger with the hammer.

     Observe the patient's response.

     To repeat the test, hit ‘Reset’ and try again.