Regular ArticleTask Demands and Limb Apraxia in Stroke☆
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Electrophysiological correlates of action monitoring in brain-damaged patients: A systematic review
2022, NeuropsychologiaCitation Excerpt :However, the second study (Frenkel-Toledo et al., 2016) focused specifically on patients with ideomotor apraxia and it was found that the lesions in the right hemisphere (but not those in the corresponding regions on the left) were correlated with a greater decrease in hMNS activity and more severe symptoms of ideomotor apraxia, thus suggesting a certain degree of hemisphere-specific activity linked to action observation and imitation. Even though apraxia is more commonly reported in patients with left-hemisphere damage [e.g. (Buxbaum et al., 2014)], it has also been described in cases of right-hemisphere damage [e.g. (Roy et al., 2000; Schell et al., 2014; Stamenova et al., 2012; Stamenova et al., 2010)], and both left-brain- and right-brain-damaged patients in the study by Frenkel-Toledo et al. (2016) had comparable apraxia scores on De Renzi's apraxia test (De Renzi, Motti and Nichelli, 1980). The authors suggest that the fact that mu suppression was correlated with the neuropsychological data only in the right-hemisphere group might be related to the specifics of the experimental task.
The cognitive neuroscience of apraxia
2021, Encyclopedia of Behavioral Neuroscience: Second EditionBilateral functional connectivity at rest predicts apraxic symptoms after left hemisphere stroke
2019, NeuroImage: ClinicalLesion correlates of impairments in actual tool use following unilateral brain damage
2016, NeuropsychologiaThe influence of action execution on end-state comfort and underlying movement kinematics: An examination of right and left handed participants
2016, Acta PsychologicaCitation Excerpt :In comparison, actual tool use reduces the cost on the working memory system, while also decreasing the degrees of freedom and likelihood of error (e.g., Baumard et al., 2014; Roy & Hall, 1992). As such, semantic tool information is only activated in a task when there is an intention to use the tool (e.g., Randerath, Li, Goldenberg, & Hermsdörfer, 2009; Roy & Hall, 1992; Roy et al., 2000). Spatial and temporal features of the movement are thus different when comparing pantomime and actual tool use in individuals with apraxia and healthy controls (e.g., Hermsdörfer, Hentze, & Goldenberg, 2006).
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This research was funded through grants from the Ontario Mental Health Foundation, the Heart and Stroke Foundation of Ontario and the Natural Sciences and Engineering Research Council of Canada.
Address correspondence and reprint requests to Eric Roy, Department of Kinesiology, University of Waterloo, Waterloo, Ontario, Canada N2L 3G1. E-mail: [email protected].