Ideomotor Apraxia – Parietal Lesion — SCE Neurology MCQ

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ModerateCerebrovascular DiseaseIdeomotor Apraxia – Parietal LesionSCE Neurology

A 70-year-old man with a left parietal lobe stroke presents with inability to perform purposeful movements on command despite intact motor function and comprehension. When asked to salute, he fumbles and cannot produce the correct gesture, though he can perform the movement spontaneously. What is this deficit called?

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Correct answer: B — Ideomotor apraxia

Ideomotor apraxia is the inability to perform learned motor actions on command despite intact motor function, sensation, and comprehension. Patients cannot translate the mental representation of a movement into the motor commands needed to execute it. Spontaneous or habitual performance may be preserved. It most commonly results from left parietal lobe (dominant hemisphere) lesions. A: Aphasia is a language disorder. C: Neglect is attentional. D: Ataxia is cerebellar incoordination. E: Agnosia is failure of recognition.

Reference: Clinical Neuroanatomy; RCP Stroke Guidelines