Jeannerod M
Laboratoire de neuropsychologie expérimentale, INSERM U 94, Bron, France.
Pediatrie. 1990;45(3):157-63.
Manual preference develops early in life and does not become established until 5 years or more. Better performance of the preferred hand can be expressed in terms of higher spatial accuracy, lower kinematic variability and shorter latency of movements. These factors contribute to better ability of the preferred hand to rapidly produce alternated movements. Manual preference cannot be dissociated from hemispheric specialization, particularly for language functions. During normal motor activity, the 2 cerebral hemispheres (and the 2 hands) display complementary specialization.
用手偏好形成于生命早期，直到5岁或更晚才得以确立。优势手更好的表现体现在更高的空间准确性、更低的运动学变异性和更短的运动潜伏期。这些因素有助于优势手更快速地产生交替运动。用手偏好与半球特化密切相关，尤其是在语言功能方面。在正常的运动活动中，两个大脑半球（以及两只手）表现出互补性特化。
