TY - JOUR PY - 1983// TI - Hemispheric asymmetries in motor function: II. Ordering does not contribute to left-hemisphere specialization JO - Neuropsychologia A1 - Jason, G. W. SP - 47 EP - 58 VL - 21 IS - 1 N2 - Patients with unilateral brain lesions of vascular origin were administered tests designed to determine if the left hemisphere is specialized for the ordering of motor acts. Patients with left- and right-sided lesions responded similarly to manipulations of ordering demands in two motor tasks, one a test of manual sequence learning and the other a test of speeded performance. A detailed analysis of performance on an Ideational Apraxia task indicated that the deficit of patients with left-sided lesions was best characterized as a deficit in generating appropriate acts rather than ordering them. It was concluded that there is no evidence for left-hemisphere specialization for the ordering of motor acts. It was hypothesized that there are two broad stages of motor function: generation of motor "target" acts (which is lateralized to the left hemisphere) and the ordering and execution of these acts (which are not lateralized).
Language: en
LA - en SN - 0028-3932 UR - http://dx.doi.org/ ID - ref1 ER -