Page "Ataxia" Paragraph 12

** the rebound phenomenon, also known as the loss of the check reflex is also sometimes seen in patients with cerebellar ataxia.

For example, when a patient is flexing his or her elbow isometrically against a resistance.

When the resistance is suddenly removed without warning, the patient's arm may swing up and even strike themselves.

With an intact check reflex, the patient will check and activate the opposing triceps to slow and stop the movement.