Lavergne J, Kimura D
University of Western Ontario, Department of Psychology, London, Canada.
Neuropsychologia. 1987;25(4):689-93. doi: 10.1016/0028-3932(87)90060-1.
Right-handed subjects were videotaped as they spoke on verbal, spatial and neutral topics and the frequencies of their spontaneous hand movements were analyzed. Although subjects made more free movement gestures during the spatial topics than during the other topics, there was a consistent level of right hand preference for free movements across topics. Self-touching movements showed no hand preference in any topic. The results suggest that free movements are generated by a left-hemisphere motor control system which exerts consistently greater influence over the right than the left hand regardless of the source of processing preceding activation of this system.
对右利手受试者在谈论语言、空间和中性话题时进行录像，并分析他们自发手部动作的频率。尽管受试者在谈论空间话题时比在其他话题时做出更多的自由动作手势，但在所有话题中，右手在自由动作方面都存在一致的偏好水平。在任何话题中，自我触摸动作都没有表现出手部偏好。结果表明，自由动作是由左半球运动控制系统产生的，无论该系统激活前的加工来源如何，该系统对右手的影响始终比对左手的影响更大。
