Whishaw I Q
Department of Psychology, University of Lethbridge, Alta., Canada.
Behav Brain Res. 1992 Nov 30;52(1):45-8. doi: 10.1016/s0166-4328(05)80323-7.
Limb preference and reaching success were examined in 580 Long-Evans rats. Most rats displayed a strong asymmetry. Although slightly more rats used the left limb than used the right limb, the difference was not significant. Thus, Long-Evans rats do not show dominance with respect to limb use. There was a significant correlation between the degree of lateralization and success of limb use. This relation suggests either that endogenous factors contributing to limb lateralization also contribute to motor skill or else the use of a lateralized reaching strategy facilitates the development of skill in reaching. The results are discussed in terms of their methodological implications for studies of selective breeding and strain differences and also in terms of their significance for understanding the evolutionary basis of lateralization and dominance.
在580只Long-Evans大鼠中研究了肢体偏好和抓握成功率。大多数大鼠表现出强烈的不对称性。虽然使用左肢的大鼠略多于使用右肢的大鼠，但差异不显著。因此，Long-Evans大鼠在肢体使用方面没有表现出优势。侧化程度与肢体使用成功率之间存在显著相关性。这种关系表明，要么是导致肢体侧化的内源性因素也有助于运动技能，要么是使用侧化的抓握策略促进了抓握技能的发展。从其对选择性育种和品系差异研究的方法学意义以及对理解侧化和优势的进化基础的重要性方面对结果进行了讨论。
