Task Demands and Limb Apraxia in Stroke

Roy, Éric; Heath, Matthew; Westwood, David A.; Schweizer, Tom A.; Dixon, Michael J.; Black, Sandra E.; Kalbfleisch, L.; Barbour, Kira; Square, Paula A.

doi:10.1006/brcg.2000.1230

Cited by 53 publications

(31 citation statements)

References 31 publications

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“…Finally, several studies observed similar impairment scores following left and right brain lesions, arguing for a bihemispheric representation of skilled movement (Haaland and Flaherty, 1984;Kertesz and Ferro, 1984;Roy, Black, Winchester and Barbour, 1992;Roy et al, 2000;Heath et al, 2001). The less frequent, nevertheless well detected incidence of limb apraxia following right brain lesion, was attributed to the sensitivity and precision of the assessment methodology.…”

Section: Contributions Of the Left And Right Brain Hemispheresmentioning

confidence: 86%

“…Second, a deficit in imitation alone would indicate a disruption of the visual gestural analysis or translation of visual information into movement. Finally, concurrent impairment in pantomime and imitation is thought to reflect a disturbance at the latter, executive stage of gesture production and was the most frequent pattern observed in Roy, Heath, Westwood, Schweizer, Dixon, Black, Kalbfleisch, Barbour and Square (2000) and Parakh, Roy, Koo and Black (2004).…”

Section: Models Of Apraxiamentioning

confidence: 99%

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Apraxia: a review

Petreska

Adriani

Blanke

et al. 2007

Progress in Brain Research

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Praxic functions are frequently altered following brain lesion, giving rise to apraxia, a complex pattern of impairments that is difficult to assess or interpret. In this chapter, we review the current taxonomies of apraxia and related cognitive and neuropsychological models. We also address the questions of the neuroanatomical correlates of apraxia, the relation between apraxia and aphasia and the analysis of apraxic errors. We provide a possible explanation for the difficulties encountered in investigating apraxia and also several approaches to overcome them, such as systematic investigation and modeling studies. Finally, we argue for a multidisciplinary approach. For example, apraxia should be studied in consideration with and could contribute to other fields such as normal motor control, neuroimaging and neurophysiology.

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Section: Contributions Of the Left And Right Brain Hemispheresmentioning

confidence: 86%

Section: Models Of Apraxiamentioning

confidence: 99%

Apraxia: a review

Petreska

Adriani

Blanke

et al. 2007

Progress in Brain Research

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“…In 2001 Heath et al found 38 % of patients with left hemispheric stroke and 42 % of patients with right hemispheric stroke apraxic [25] assessing pantomimic movements. Roy et al examined 61 % of left hemispheric stroke patients and 54 % of right hemispheric stroke patients as apraxic or borderline apraxic in the assessment of pantomime [41].…”

Section: Discussionmentioning

confidence: 99%

Ideomotor limb apraxia in Huntington's disease

Hödl

Otti

et al. 2008

J Neurol

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“…Pantomimes share common factors with both apraxia and language 30 . Pantomiming a gesture is thought to place demands on the conceptual system, as the performer must generate a gesture based on representations of tools and actions 11 .…”

Section: Discussionmentioning

confidence: 99%

“…One of the observations regarding apraxia is that impairments can be seen under some performance conditions but not others 11 , calling for a very specific and complete evaluation 12,13 . Clinical studies demonstrate that limb apraxia is generally associated with a lesion in the left hemisphere and also that association with aphasia is not uncommon 7,8,10,14,15,16. In fact, aphasic patients exhibiting oral communication deficits, besides problems communicating by gestures, are commonly seen in clinical practice.…”

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confidence: 99%

Limb apraxia in aphasic patients

Ortiz

Mantovani-Nagaoka

2017

Arq. Neuro-Psiquiatr.

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Limb apraxia is a movement disorder, usually associated with lesions to the left cerebral hemisphere, that cannot be accounted for by weakness, sensory loss, poor coordination of movement, or poor comprehension/attention to commands 1 . The earliest systematic studies of limb apraxia were recorded by Liepmann who developed a classification of apraxias 2 . He proposed three steps for the transition from intrapsychic process to motor execution, and selective disturbances of one of these steps yielded three variants of apraxia -ideational, motor/ideokinetic apraxia (ideomotor apraxia), and limb-kinetic apraxia 2 . Drawing upon Liepmmann's original ideas, two levels of gesture processing were distinguished: a gestural-semantics level and a motor control level 3 . Although there is broad consensus on the interpretation of apraxia, which still provides a sound framework of reference for clarifying the nature of the disorder 4 , the precise definitions of limb apraxias remain a focus of considerable debate 5 . At odds with other cognitive functions, interpretation of apraxia has suffered from a lack of a reliable model that does justice to its complexity. Rothi and Ochipa 1 proposed a model, later reviewed 6 , in which five different patterns of impairment of gesture processing were postulated. The five predicted types of apraxia profiles postulated by these authors were: 1) deficit of action input lexicon: difficulty in discriminating and comprehending seen gestures with spared ability to imitate and execute gestures on verbal command; 2) impairment within the action semantic system: spared imitation but impaired execution on command coupled with problems in attributing meaning to gestures; 3) deficit of the action output lexicon: the derived picture differs from a ABSTRACTLimb apraxia is usually associated with left cerebral hemisphere damage, with numerous case studies involving aphasic patients. The aim of this study was to verify the occurrence of limb apraxia in aphasic patients and analyze its nature. This study involved 44 healthy volunteers and 28 aphasic patients matched for age and education. All participants were assessed using a limb apraxia battery comprising subtests evaluating lexical-semantic aspects related to the comprehension/production of gestures as well as motor movements. Aphasics had worse performances on many tasks related to conceptual components of gestures. The difficulty found on the imitation of dynamic gesture tasks also indicated that there were specific motor difficulties in gesture planning. These results reinforce the importance of conducting limb apraxia assessment in aphasic patients and also highlight pantomime difficulties as a good predictor for semantic disturbances.Keywords: apraxias; apraxia, ideomotor; aphasia; neuropsychological tests. RESUMOA apraxia de membros está frequentemente associada com lesões do hemisfério esquerdo, com inúmeros casos de pacientes afásicos. O objetivo deste estudo foi verificar a ocorrência da apraxia de membros em pacientes afásicos bem como a n...

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Task Demands and Limb Apraxia in Stroke

Cited by 53 publications

References 31 publications

Apraxia: a review

Apraxia: a review

Ideomotor limb apraxia in Huntington's disease

Limb apraxia in aphasic patients

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