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Voluntary Swallowing Initiation Difficulty After Dorsomedial Prefrontal Cortex Damage: A Case Report.
Cogn Behav Neurol
December 2024
Department of Neurology, Teikyo University School of Medicine, Tokyo, Japan.
The dorsomedial prefrontal cortex plays a critical role in movement initiation, and damage to this area can impair this function. Here we present the case of an individual who had difficulty with voluntary initiation of liquid swallowing after surgical removal of a glioblastoma from the right dorsomedial prefrontal cortex. This individual had no difficulty swallowing solids, perhaps because of the additional external movement triggers (eg, chewing) involved.
View Article and Find Full Text PDFGesture meaning modulates the neural correlates of effector-specific imitation deficits in left hemisphere stroke.
Neuroimage Clin
March 2023
Cognitive Neuroscience, Institute of Neuroscience and Medicine (INM-3), Research Centre Jülich, Leo-Brandt-Str. 5, 52425 Jülich, Germany; Department of Neurology, Faculty of Medicine and University Hospital Cologne, University of Cologne, Kerpener Str. 62, 50937 Cologne, Germany.
Background: Previous studies on left hemisphere (LH) stroke patients reported effector-specific (hand, fingers, bucco-facial) differences in imitation performance. Furthermore, imitation performance differed between meaningless (ML) and meaningful (MF) gestures. Recent work suggests that a gesture's meaning impacts the body-part specificity of gesture imitation.
View Article and Find Full Text PDFBuccofacial apraxia in primary progressive aphasia.
Cortex
January 2023
Department of Behavioral Neurology and Cognitive Neuroscience, Tohoku University Graduate School of Medicine, Sendai, Miyagi, Japan.
Buccofacial apraxia (BFA) is associated with nonfluent/agrammatic variant primary progressive aphasia (nfvPPA) as well as with the severity of apraxia of speech (AOS), a core symptom of nfvPPA. However, an association with agrammatism has not been established. The aim of this study was to examine the association between BFA and agrammatism in nfvPPA and to determine differences in atrophic regions in primary progressive aphasia (PPA) with and without BFA.
View Article and Find Full Text PDFEvaluation of the Dementia Apraxia Test in Parkinson's Disease Patients.
Dement Geriatr Cogn Disord
August 2022
Department of Neurodegenerative Diseases, Hertie Institute for Clinical Brain Research, University of Tübingen, Tübingen, Germany.
Introduction: Ideomotor apraxia, a disorder of skilled movements affecting limbs and/or face, can be seen in patients with Parkinson's disease (PD), yet tests of apraxia in PD are rare. The aim of this project was to evaluate the psychometric properties and validity of the Dementia Apraxia Test (DATE) in a PD sample.
Methods: 118 PD patients were included.
Distinct cognitive components and their neural substrates underlying praxis and language deficits following left hemisphere stroke.
Cortex
January 2022
Cognitive Neuroscience, Institute of Neuroscience and Medicine (INM-3), Forschungszentrum Jülich, Jülich, Germany; University of Cologne, Faculty of Medicine and University Hospital Cologne, Department of Neurology, Cologne, Germany.
Apraxia is characterised by multiple deficits of higher motor functions, primarily caused by left hemisphere (LH) lesions to parietal-frontal praxis networks. While previous neuropsychological and lesion studies tried to relate the various apraxic deficits to specific lesion sites, a comprehensive analysis of the different apraxia profiles and the related (impaired) motor-cognitive processes as well as their differential neural substrates in LH stroke is lacking. To reveal the cognitive mechanisms that underlie the different patterns of praxis and (related) language deficits, we applied principal component analysis (PCA) to the scores of sub-acute LH stroke patients (n = 91) in several tests of apraxia and aphasia.
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