title: Right frontal areas 6 and 8 are associated with simultanapraxia, a subset of motor impersistence.
abstract: The authors examined brain lesions that cause simultanapraxia, a subset of motor impersistence. Simultanapraxia was defined as the inability to perform two motor acts simultaneously: closing the eyes and protruding the tongue. Simultanapraxia was found in 9 (5.6%) of 160 hospitalized patients with cerebrovascular diseases. The lesions were located in areas 6 and 8 in the right middle cerebral artery territory. This site was spared in five patients who did not show simultanapraxia, even with a large infarction in the right middle cerebral artery area.
authors.affiliation: Gunma University School of Health Sciences, Maebashi, Japan. ysakai@akagi.sb.gunma-u.ac.jp
authors.forename: Y
authors.initials: Y
authors.lastname: Sakai
authors.forename: T
authors.initials: T
authors.lastname: Nakamura
authors.forename: A
authors.initials: A
authors.lastname: Sakurai
authors.forename: H
authors.initials: H
authors.lastname: Yamaguchi
authors.forename: S
authors.initials: S
authors.lastname: Hirai
mesh_terms: D001072:Apraxias / Q000473:pathology / Q000503:physiopathology*; D004292:Dominance, Cerebral / Q000502:physiology*; D005625:Frontal Lobe / Q000473:pathology / Q000503:physiopathology*; D006801:Humans; D020244:Infarction, Middle Cerebral Artery / Q000473:pathology / Q000503:physiopathology*; D008279:Magnetic Resonance Imaging; D009068:Movement / Q000502:physiology; D011597:Psychomotor Performance; D014836:Volition / Q000502:physiology