NeuroLogic Exam - MCQs


The upper motor neuron syndrome findings that are due to the loss of control and modulation of the indirect brainstem motor control centers by corticospinal collaterals include ALL of the following EXCEPT:



A. Increased tone spasticity.
B. Hyperreflexia.
C. Clasp-knife phenomenon.
D. Babinski sign.
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Answer / Explanation:

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The correct answer is D.

The Babinski sign is one of the few findings in the upper motor neuron syndrome that is due the loss of the direct corticospinal tract input on the lower motor neuron rather then the loss of control and modulation of the indirect brainstem motor control centers.
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