Selective deficit of praxis imagery in ideomotor apraxia

We studied imagery for learned, skilled movements (praxis imagery) in a patient with severe ideomotor apraxia and intact language abilities. This patient, who made predominantly spatial and movement errors when performing transitive movements demonstrating the use of tools (transitive gestures), was...

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Bibliographic Details
Published inNeurology Vol. 49; no. 2; p. 474
Main Authors Ochipa, C, Rapcsak, S Z, Maher, L M, Rothi, L J, Bowers, D, Heilman, K M
Format Journal Article
LanguageEnglish
Published United States 01.08.1997
Subjects
Apraxias - diagnosis
Apraxias - psychology
Extremities
Female
Humans
Imagery (Psychotherapy)
Magnetic Resonance Imaging
Middle Aged
Motor Skills
Movement
Neuropsychological Tests
Parietal Lobe - pathology
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Summary:We studied imagery for learned, skilled movements (praxis imagery) in a patient with severe ideomotor apraxia and intact language abilities. This patient, who made predominantly spatial and movement errors when performing transitive movements demonstrating the use of tools (transitive gestures), was also impaired in her ability to answer imagery questions about joint movement or the spatial position of the hands during action. However, visual object imagery was spared. The finding of parallel praxis production and praxis imagery deficits in this patient suggests that the same representations used for gesture production are also activated during imagery of motor acts. Our findings also suggest that certain aspects of motor imagery may be dissociable from general object imagery.
ISSN:0028-3878
1526-632X
DOI:10.1212/wnl.49.2.474