Right frontal areas 6 and 8 are associated with simultanapraxia, a subset of motor impersistence.
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.
Sakai
Y
Y
Gunma University School of Health Sciences, Maebashi, Japan. ysakai@akagi.sb.gunma-u.ac.jp
Nakamura
T
T
Sakurai
A
A
Yamaguchi
H
H
Hirai
S
S
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