TABLE 8-1.- THE MOST COMMONLY TESTED REFLEXES

(*These reflexes are considered part of a routine screening examination for neurologic disease. The other reflexes are examined when suspicion of abnormality exists on the basis of history or screening examination.)

Stretch reflexes (deep tendon reflexes)

Jaw jerk

V sensory (s) and motor (m)

Biceps*

C5-6 (s,m)

Triceps*

C6-7 (s,m)

Brachioradialis*

C6,7,8 (s,m)

Finger flexor

C6,7,8 (s,m)

Knee*

L2,3,4 (s,m)

Ankle*

S1,2 (s,m)

Superficial reflexes

Corneal *

V (s) and VII (m)

Nose tickle

V (s) and VII+ (m)

Gag*

IX, X (s,m)

Abdominal

T7-TI2 (s,m)

Cremasteric

S1 (s,m)

Plantar*

S1,2 (s,m)

Anal wink

S4,5 (s,m)

Visceral (autonomic) reflexes

Pupillary-light & accommodation*

II (s) and III (m)

Oculocardiac

V (s) and X (m)

Carotid sinus

IX (s) and X (m)

Bulbocavernosis

S2, 3, 4 (s,m)

Rectal (internal sphincter)

S2, 3, 4 (s,m)

Orthostatic blood pressure and pulse change

IX (s), X & sympathtics (m)

"Primitive" reflexes

Glabellar

Associated with bilateral hemispheric dysfunction (especially frontal lobe; see Chaps. 2 and 16).

Forced grasping (feet and hands)

Feeding reflexes (sucking, biting, rooting)

Oculocephalic and nuchocephalic disinhibition

Miscellaneous

Vestibulo-ocular responses (see Chap. 3)

VIII (s) and extraocular (III, IV, VI) (m)

Oculocephalic reflex

Caloric irrigations

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