A reflex is a motor response to a sensory stimulation that is used in an assessment to observe the integrity of the nervous system. They elicit a muscle contraction when the muscle's tenon is stimulated.
The patient should be relaxed. The muscle should be placed on a slight stretch. A reflex hammer taps the tendon with an anticipated immediate response. Both sides of the body should be assessed. Reflexes can be graded as normal, exaggerated, or depressed, or no a scale of 0-4.