York C D, Cermak S A
Maine Medical Center, Portland 04032, USA.
Am J Occup Ther. 1995 Jun;49(6):543-50. doi: 10.5014/ajot.49.6.543.
The purpose of this study was to examine the performance of persons with right cerebrovascular accident (RCVA) and persons with left cerebrovascular accident (LCVA) on a variety of measures of praxis and visual perception in order to examine the relative contributions of the left and right cerebral hemispheres to praxis and perception.
Forty-five subjects, 15 with RCVA, 15 with LCVA, and 15 without CVA (control subjects), were tested on three tests of praxis-praxic production, gesture comprehension, and gesture discrimination-and selected tests of visual perception, including the Judgement of Line Orientation Test, the Motor Free Visual Perception Test, the Hooper Visual Organization Test, and the Line Bisection Test.
Subjects in both groups with CVA performed more poorly on all of the tests than did control subjects. The group with LCVA performed most poorly on tests of gesture comprehension and praxis production, whereas the group with RCVA performed most poorly on tests of gesture discrimination and visual perception.
These findings suggest that both the right and left cerebral hemispheres contribute to different aspects of praxis. Elements of visual perception may be related to gesture comprehension, gesture discrimination, and praxis production in adults who have had stroke. These findings have clinical implications regarding instructional style and perceptual and praxic training.
本研究旨在考察右侧脑血管意外（RCVA）患者和左侧脑血管意外（LCVA）患者在各种实践和视觉感知测量中的表现，以探究左右大脑半球对实践和感知的相对贡献。
45名受试者，15名患有RCVA，15名患有LCVA，15名无脑血管意外（对照受试者），接受了三项实践测试——实践产出、手势理解和手势辨别，以及选定的视觉感知测试，包括线方向判断测试、无运动视觉感知测试、胡珀视觉组织测试和线二等分测试。
两组患有脑血管意外的受试者在所有测试中的表现均比对照受试者差。LCVA组在手势理解和实践产出测试中表现最差，而RCVA组在手势辨别和视觉感知测试中表现最差。
这些发现表明，左右大脑半球都对实践的不同方面有贡献。视觉感知要素可能与中风成人的手势理解、手势辨别和实践产出有关。这些发现对教学风格以及感知和实践训练具有临床意义。
