<unk>  at the ankle is tested by rapidly flexing the foot into dorsiflexion (upward), inducing a stretch to the gastrocnemius muscle. Subsequent beating of the foot will result, however only a sustained<unk>  (5 beats or more) is considered abnormal.<unk>  can also be tested in the knees by rapidly pushing the patella (knee cap), towards the toes.
Clonus
Opsoclonus
Opisthotonus
Myoclonus
Paratonia
Stuttering
Catalepsy
Hyperkinesia