Finger Jerk

The finger jerk reflex observed during a neurological exam by striking the fingers directly with a hammer when the patient's arm is relaxing. In this activity user can observe the finger movements by striking on doctor’s fingers with a hammer


Simulation Type

Condition, Using interactive animation

Gender Specific

No, Common for both genders

Condition Simulated


     Slight reflex(Normal)-rated as 2+

     Super-normal (hyper-reflexic) rated as 3+

     Clonus: Repetitive shortening of the muscle after a single stimulation rated as 4+.

     No evidence of contraction rated as 0.


     The system will display patient's hand placed over the doctor’s hand, a ‘Strike’ button and a toggle button to change the hands.

     Hit" Strike " button to strike on doctor’s fingers with a hammer.

     An animation showing patient’s finger movement along with the doctor’s.

     Note the rate of patient’s finger movement.

     Patient's response rate will will be indicated in a response box.