Head moved >10° to vertical axis within 30s Placing rat on floor (normal=0; maximum=3) Normal walk
Inability to walk straight Circling toward paretic side Falls down to paretic side Sensory tests
Placing test (visual and tactile test)
Proprioceptive test (deep sensation, pushing paw against table edge to stimulate limb muscles)
Beam balance tests (normal=0; maximum=6) Balances with steady posture Grasps side of beam
Hugs beam and 1 limb falls down from beam
Hugs beam and 2 limbs fall down from beam, or spins on beam (>60s) Attempts to balance on beam but falls off (>40s) Attempts to balance on beam but falls off (>20s) Falls off; no attempt to balance or hang on to beam (<20s) Reflex absence and abnormal movements
Pinna reflex (head shake when auditory meatus is touched)
Corneal reflex (eye blink when cornea is lightly touched with cotton)
Startle reflex (motor response to a brief noise from snapping a clipboard paper) Seizures, myoclonus, myodystony Maximum points
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