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Question
Patients with unilateral upper motor neuron dysarthria often have mild to moderate harsh vocal quality. What is NOT suggested as a reason for this harshness?
A. It is the result of mild vocal-fold weakness or spasticity following unilateral upper motor neuron damage.
B. A previously known lesion may be present, which combined with a new upper motor neuron lesion on the opposite side of the brain causes vocal fold spasticity.
C. The harsh vocal quality may be dyspepsia that appears normally in geriatric individuals.
D. It may be caused by a general medical condition such as illness or inactivity and consequently cannot be attributed directly to upper motor neuron damage.
Answer
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