ideomotor apraxia
Inability to perform learned motor movements on command despite intact comprehension and motor function.
Full Definition
Ideomotor apraxia is a higher-order motor disorder characterized by the inability to perform skilled movements on verbal command or imitation, despite preserved comprehension of the request and adequate motor strength. Patients can often perform the same movements spontaneously but fail when asked to demonstrate them deliberately. This condition typically results from left hemisphere damage affecting the parietal cortex or disconnection between motor planning and execution areas. Common manifestations include difficulty demonstrating tool use, gestures, or limb movements to command.
Usage
Usage note: Distinguish from other forms of apraxia by testing spontaneous vs. commanded movements.
In Context
- "Ideomotor apraxia was evident when the patient could not demonstrate brushing teeth on command but performed it normally at bedtime." — Neuropsychological assessment
- "Occupational therapy addressed ideomotor apraxia through errorless learning and repetitive practice techniques." — Rehabilitation progress note