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Motor Impersistence

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Synonyms

Simultanapraxia

Definition

Motor impersistence is the inability to maintain postures or positions (such as keeping eyes closed, protruding the tongue, maintaining conjugate gaze steadily in a fixed direction, or making a prolonged “ah” sound) without repeated prompts. Simultanapraxia, a subset of motor impersistence, has been defined as the inability to perform more than two of the simple voluntary acts simultaneously, such as closing the eyes and protruding the tongue. According to research (Kertesz, Nicholson, Cancelliere, Kassa, & Black, 1985; Rosse & Ciolino, 1986; Stuss, Delgado, & Guzman, 1987), it is most likely seen in patients with right frontal damage. Joynt, Benton, and Fotel (Joynt, Benton, & Fogel, 1962) developed a standardized objective test to measure motor impersistence.

Cross References

Action-Intentional Disorders

Apraxia

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  • DOI: 10.1007/978-0-387-79948-3_2046
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References and Readings

  • Joynt, R. J., Benton, A. L., & Fogel, M. L. (1962). Behavioral and pathological correlates of motor impersistence. Neurology, 12, 876–881.

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  • Kertesz, A., Nicholson, I., Cancelliere, A., Kassa, K., & Black, S. E. (1985). Motor impersistence: A right-hemisphere syndrome. Neurology, 35(5), 662–666.

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  • Rosse, R. B., & Ciolino, C. P. (1986). Motor impersistence mistaken for uncooperativeness in a patient with right-brain damage. Psychosomatics, 27(7), 532–534.

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  • Stuss, D. T., Delgado, M., & Guzman, D. A. (1987). Verbal regulation in the control of motor impersistence: A proposed rehabilitation procedure. Neurorehabilitation and Neural Repair, 1(1), 19–24.

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Piryatinsky, I. (2011). Motor Impersistence. In: Kreutzer, J.S., DeLuca, J., Caplan, B. (eds) Encyclopedia of Clinical Neuropsychology. Springer, New York, NY. https://doi.org/10.1007/978-0-387-79948-3_2046

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