Neurologic Clinical Specialist (NCS) Examination — Questions and Answers

Question 1: What systems contribute to balance?

Only the brain
Only the eyes
Only the inner ear
Visual, vestibular (inner ear), and somatosensory (proprioception) systems working together (Correct answer)

Correct answer: Visual, vestibular (inner ear), and somatosensory (proprioception) systems working together

Balance requires integration of information from three sensory systems.

Question 2: Diffuse axonal injury (DAI) following TBI is caused primarily by:

Direct cortical contusion at the point of impact
Rotational acceleration-deceleration forces shearing axons at white-gray matter interfaces (Correct answer)
Secondary ischemia from elevated intracranial pressure
Herniation of the brain through the foramen magnum

Correct answer: Rotational acceleration-deceleration forces shearing axons at white-gray matter interfaces

Rotational and angular acceleration-deceleration forces generate shear-strain at sites where tissue density changes (white-gray interfaces), physically disrupting axonal cytoskeleton and transport.

Question 3: Which clinical measure has the STRONGEST evidence for predicting future fall risk in community-dwelling older adults with neurological conditions?

Mini-BESTest with a cutoff score below 20
Berg Balance Scale score below 45
Timed Up and Go (TUG) test taking longer than 12 seconds (Correct answer)
Functional Reach Test less than 10 inches

Correct answer: Timed Up and Go (TUG) test taking longer than 12 seconds

A TUG time greater than 12 seconds has robust validation data across neurological and older adult populations as a threshold predictive of increased fall risk in community settings.

Question 4: According to Brunnstrom's stages of motor recovery, a patient who exhibits voluntary limb movements only within synergy patterns is at which stage?

Stage 3 (Correct answer)
Stage 4
Stage 2
Stage 5

Correct answer: Stage 3

Brunnstrom Stage 3 is characterized by voluntary movement occurring but only within the flexor or extensor synergy patterns.

Question 5: Central cord syndrome following hyperextension cervical injury characteristically spares which function?

Lower extremity motor function (Correct answer)
Bladder control
Pain and temperature sensation below the lesion
Upper extremity motor function

Correct answer: Lower extremity motor function

The corticospinal tract is somatotopically organized with cervical fibers medially and sacral fibers laterally; central hemorrhage/edema damages medial fibers first, sparing leg function more than arm function.

Question 6: Which reflex, when present in an adult, is considered pathological and suggests corticospinal tract dysfunction?

Plantar grasp reflex (Babinski sign) (Correct answer)
Brachioradialis reflex (C5-C6)
Patellar reflex (L3-L4)
Biceps reflex (C5-C6)

Correct answer: Plantar grasp reflex (Babinski sign)

The Babinski sign (upgoing great toe with fanning of toes on plantar stroking) is normal in infants but pathological in adults, indicating UMN lesion.

Question 7: A patient with Guillain-Barré syndrome has an FVC of 18 mL/kg. What is the most appropriate clinical decision?

Notify the physician immediately due to impending respiratory failure risk (Correct answer)
Initiate incentive spirometry and discharge planning
Proceed with aggressive respiratory muscle strengthening exercises
Continue ambulation training as tolerated

Correct answer: Notify the physician immediately due to impending respiratory failure risk

An FVC below 20 mL/kg in GBS indicates critical risk for respiratory failure and requires urgent physician notification.

Question 8: When assessing the H-reflex in clinical practice, which muscle-nerve pair is most commonly tested?

Soleus via tibial nerve (Correct answer)
Deltoid via axillary nerve
Biceps via musculocutaneous nerve
Quadriceps via femoral nerve

Correct answer: Soleus via tibial nerve

The H-reflex is most reliably elicited from the soleus via tibial nerve stimulation and reflects the S1 reflex arc.

Question 9: Which semicircular canal is most commonly affected in benign paroxysmal positional vertigo (BPPV)?

Superior semicircular canal
Posterior semicircular canal (Correct answer)
Horizontal semicircular canal
Anterior semicircular canal

Correct answer: Posterior semicircular canal

The posterior semicircular canal is affected in approximately 85–90% of BPPV cases due to its anatomical orientation making it most susceptible to canalith accumulation when upright.

Question 10: Which descending pain modulation pathway utilizes serotonin and norepinephrine as primary neurotransmitters?

Dorsal column-medial lemniscal pathway
Dorsolateral funiculus (PAG-RVM system) (Correct answer)
Anterolateral system
Spinothalamic tract

Correct answer: Dorsolateral funiculus (PAG-RVM system)

The PAG-RVM-dorsolateral funiculus system uses serotonin and norepinephrine to exert descending inhibitory control over dorsal horn neurons.

Question 11: 'Canal conversion' during BPPV canalith repositioning refers to:

Complete resolution of BPPV without residual symptoms
Spontaneous disappearance of nystagmus mid-maneuver
Conversion from peripheral to central BPPV etiology
Canaliths migrating from one semicircular canal to another during the maneuver (Correct answer)

Correct answer: Canaliths migrating from one semicircular canal to another during the maneuver

Canal conversion occurs when repositioning maneuvers inadvertently shift debris into a different semicircular canal (e.g., posterior to horizontal), requiring recognition of the changed nystagmus pattern and a different treatment approach.

Question 12: Which cognitive impairment after stroke is MOST likely to affect a patient's ability to learn new procedural tasks in rehabilitation?

Impaired procedural (implicit) memory (Correct answer)
Severe declarative (explicit) memory deficit
Reduced processing speed
Mild anterograde memory impairment

Correct answer: Impaired procedural (implicit) memory

Procedural memory underlies skill acquisition; impairment in this system would most directly interfere with learning new motor tasks like transfers or adaptive equipment use.

Question 13: The muscle spindle's Ia afferent fibers respond to which stimulus, and what reflex do they mediate?

Joint capsule compression; withdrawal reflex
Muscle belly stretch; monosynaptic stretch (myotatic) reflex (Correct answer)
Free nerve endings; nociceptive flexion reflex
Golgi tendon organ stretch; inverse myotatic reflex

Correct answer: Muscle belly stretch; monosynaptic stretch (myotatic) reflex

Ia afferents from the annulospiral endings of the muscle spindle detect muscle stretch and synapse directly on alpha motor neurons, mediating the monosynaptic stretch reflex (e.g., patellar tendon reflex).

Question 14: When training stair negotiation in a patient with right hemiplegia post-stroke, what is the standard instruction for ascending stairs?

Lead with the left (unaffected) leg going up, bearing weight through it on the higher step (Correct answer)
Lead with the right (affected) leg going up to strengthen the hemiparetic limb
Use a sideways sidestepping pattern with the stronger leg always on the higher step
Alternate legs with whichever is stronger leading on each individual step

Correct answer: Lead with the left (unaffected) leg going up, bearing weight through it on the higher step

The mnemonic 'up with the good, down with the bad' reflects that the unaffected leg leads ascending so it bears weight on the higher step, protecting the weaker limb.

Question 15: A patient with vestibular neuritis presents with spontaneous nystagmus beating right and falls toward the left. The most appropriate initial clinical decision is:

Immediately perform canalith repositioning maneuver
Prescribe vestibular suppressants as the primary intervention
Refer for audiological evaluation before initiating any therapy
Begin gaze stabilization exercises and adaptation training (Correct answer)

Correct answer: Begin gaze stabilization exercises and adaptation training

Vestibular neuritis involves a unilateral peripheral hypofunction best treated with gaze stabilization and habituation exercises to promote central compensation.

Question 16: Orthostatic hypotension in neurological patients is defined by a drop in systolic blood pressure of at least how many mmHg within 3 minutes of standing?

30 mmHg
10 mmHg
40 mmHg
20 mmHg (Correct answer)

Correct answer: 20 mmHg

Orthostatic hypotension is defined as a ≥20 mmHg drop in systolic or ≥10 mmHg drop in diastolic BP within 3 minutes of standing.

Question 17: Constraint-Induced Movement Therapy (CIMT) is BEST indicated for which post-stroke patient profile?

Flaccid hemiplegia with no active wrist extension
Complete paralysis of the affected upper extremity
Severe cognitive impairment limiting task follow-through
At least 10° active wrist extension and 10° active finger extension in affected hand (Correct answer)

Correct answer: At least 10° active wrist extension and 10° active finger extension in affected hand

CIMT criteria require a minimum of 10° active wrist extension and 10° active finger extension in the affected hand to achieve meaningful functional gains.

Question 18: The Montreal Cognitive Assessment (MoCA) tests multiple cognitive domains; what is the maximum score and the generally accepted cutoff for normal cognition?

20 points total, ≥15 normal
30 points total, ≥26 normal (Correct answer)
50 points total, ≥40 normal
10 points total, ≥8 normal

Correct answer: 30 points total, ≥26 normal

The MoCA is scored 0-30, with a score of ≥26 considered normal and scores below indicating possible mild cognitive impairment.

Question 19: A patient with severe TBI is in the minimally conscious state (MCS). Which clinical feature best distinguishes MCS from vegetative state (VS)?

Auditory startle response intact
Sleep-wake cycles present
Inconsistent but reproducible purposeful movement (Correct answer)
Eyes open spontaneously

Correct answer: Inconsistent but reproducible purposeful movement

MCS is defined by inconsistent but reproducible evidence of awareness such as command following, object manipulation, or intelligible verbalization, which are absent in VS.

Question 20: A patient post-stroke develops shoulder-hand syndrome (CRPS Type I) in the affected upper extremity. Which intervention is most appropriate during the acute inflammatory phase?

Moist heat application to increase local circulation and reduce pain
Resistive exercises targeting shoulder and hand muscles to reverse disuse atrophy
Aggressive passive ROM to maintain shoulder mobility and prevent adhesive capsulitis
Active-assisted exercises with upper extremity elevation combined with TENS for pain modulation (Correct answer)

Correct answer: Active-assisted exercises with upper extremity elevation combined with TENS for pain modulation

Active-assisted exercises with elevation reduce edema via muscle pumping, while TENS provides pain modulation without aggravating the ongoing inflammatory response.

Question 21: A patient with a spinal cord injury (SCI) is experiencing autonomic dysreflexia. What should be your immediate action?

Increase the intensity of the physical therapy session.
Apply a hot pack to the affected area to relieve symptoms.
Assist the patient in sitting upright and identifying the cause of the dysreflexia. (Correct answer)
Begin a range of motion (ROM) exercise program.

Correct answer: Assist the patient in sitting upright and identifying the cause of the dysreflexia.

Autonomic dysreflexia is a medical emergency in individuals with spinal cord injury above T6, characterized by a sudden, dangerous increase in blood pressure. The immediate action is to sit the patient upright to help lower blood pressure and then quickly identify and remove the noxious stimulus (e.g., full bladder, bowel impaction, tight clothing) causing the reflex. Prompt identification and removal of the trigger are crucial to prevent severe complications like stroke or seizure.

Question 22: In multiple sclerosis (MS), which of the following is the primary pathophysiological process?

Autoimmune destruction of peripheral nerves
Demyelination of the central nervous system (Correct answer)
Cortical neuron apoptosis
Excessive dopamine release in the basal ganglia

Correct answer: Demyelination of the central nervous system

Multiple Sclerosis (MS) is an autoimmune disease characterized by the immune system attacking the myelin sheath, which insulates nerve fibers in the central nervous system (brain, spinal cord, and optic nerves). This demyelination disrupts the efficient transmission of nerve impulses, leading to a wide range of neurological symptoms. It is the primary pathophysiological process that defines MS.

Question 23: A patient with Friedrich's ataxia presents with progressive spinocerebellar degeneration and hypertrophic cardiomyopathy. In establishing physical therapy goals, the therapist must prioritize:

Aggressive aerobic training to maximally stress cardiovascular adaptation
Functional maintenance, fall prevention, and exercise within cardiac tolerance limits (Correct answer)
Aquatic therapy without cardiac screening
Intensive strengthening to prevent the inevitable decline

Correct answer: Functional maintenance, fall prevention, and exercise within cardiac tolerance limits

Friedreich's ataxia is progressive with life-limiting cardiomyopathy; goals should balance functional maintenance with cardiac precautions.

Question 24: A patient with MS demonstrates heat sensitivity (Uhthoff's phenomenon) and has a therapy session scheduled during warm afternoon hours. The best clinical decision is to:

Schedule the session in cooler morning hours and use cooling strategies (Correct answer)
Increase session intensity to build heat tolerance
Administer aquatic therapy in a heated pool
Cancel the session and reschedule for evening

Correct answer: Schedule the session in cooler morning hours and use cooling strategies

Scheduling therapy in cooler conditions and using cooling vests or cold towels minimizes Uhthoff's phenomenon in MS patients.

Question 25: A patient with Parkinson's disease presents with short, shuffling steps, reduced arm swing, and a forward-flexed trunk posture. This is best classified as:

Antalgic gait
Scissor gait
Parkinsonian (hypokinetic) gait (Correct answer)
Steppage gait

Correct answer: Parkinsonian (hypokinetic) gait

Parkinsonian gait (hypokinetic gait) is characterized by reduced stride length, shuffling steps, diminished arm swing, and camptocormia (forward trunk flexion) reflecting basal ganglia dysfunction.

Question 26: Which cognitive domain is typically most impaired acutely after mild TBI, often persisting into the subacute period?

Visuospatial construction
Long-term semantic memory
Processing speed and attention (Correct answer)
Language fluency

Correct answer: Processing speed and attention

Processing speed and attention are the cognitive domains most consistently impaired after mild TBI, often measurable even when other cognitive domains appear intact.

Question 27: A TBI patient with spasticity and co-existing cognitive impairment is being considered for antispasticity medication. Which agent is most likely to worsen cognitive function?

Tizanidine
Dantrolene sodium
Oral baclofen (Correct answer)
Intrathecal baclofen

Correct answer: Oral baclofen

Oral baclofen crosses the blood-brain barrier and can significantly worsen cognition, sedation, and alertness in TBI patients, whereas intrathecal baclofen minimizes CNS side effects.

Question 28: A therapist is measuring the 6-Minute Walk Test (6MWT) in a patient with MS. The primary clinical decision this test informs is:

Establishing aerobic capacity and walking endurance for intervention planning (Correct answer)
Diagnosing fatigue severity
Determining readiness for discontinuation of therapy
Predicting fall risk in the community

Correct answer: Establishing aerobic capacity and walking endurance for intervention planning

The 6MWT measures submaximal aerobic capacity and functional walking endurance, which directly informs exercise prescription intensity and endurance goals.

Question 29: During a neurological exam, a therapist finds that a patient has intact light touch but absent proprioception and vibration sense in the lower extremities. This pattern most suggests pathology in which tract?

Corticospinal tract
Dorsal columns (posterior funiculus) (Correct answer)
Anterior spinothalamic tract
Lateral spinothalamic tract

Correct answer: Dorsal columns (posterior funiculus)

Proprioception and vibration are carried in the dorsal columns; loss of these with intact pain/temperature indicates a dorsal column lesion.

Question 30: A patient with chronic stroke presents with learned non-use of the affected upper extremity. Which intervention is specifically designed to address this mechanism?

Mirror therapy targeting the unaffected limb
Proprioceptive neuromuscular facilitation bilateral patterns
Functional electrical stimulation to the non-affected arm
Constraint-induced movement therapy (CIMT) (Correct answer)

Correct answer: Constraint-induced movement therapy (CIMT)

CIMT directly targets learned non-use by constraining the non-affected arm and forcing massed practice with the affected limb.

Neurologic Clinical Specialist (NCS) Examination

The NCS examination, governed by ABPTS, certifies physical therapists as board-certified specialists in neurologic physical therapy, assessing advanced expertise in patient management, clinical reasoning, and foundational neurological knowledge across the full spectrum of neurological conditions.

Questions

35 min

Time Limit

70%

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