惯用手转换：从利手转换研究中我们能学到什么？

Changing handedness: What can we learn from preference shift studies?

机构信息

Motor neuroscience research group, Londrina State University, Brazil.

出版信息

Neurosci Biobehav Rev. 2019 Dec;107:313-319. doi: 10.1016/j.neubiorev.2019.09.019. Epub 2019 Sep 12.

DOI:10.1016/j.neubiorev.2019.09.019

Abstract

Handedness is a dynamic and complex aspect of human behavior. Changing it through practice, either willingly or obliged by some reason, requires a considerable amount of effort. Analyzing studies that presented handedness shifts may expand our comprehension of this phenomenon, since knowing how to change it might provide insights into how it develops. Therefore, we reviewed the outcomes of handedness shifts. The results suggest that neural asymmetries related to handedness are likely a consequence of lateralized practice since they correlate with modifications in the behavioral patterns. Clearly, practice is not the only factor influencing handedness development, but it seems to play a significant role in the formation and consolidation of neural and behavioral asymmetries. Another key finding of our review is the suggestion of a ceiling effect for the capacity to change handedness direction and degree, considering none of the reviewed studies reported complete shifts in behavioral measures and brain activation patterns.

摘要

利手性是人类行为的一个动态而复杂的方面。通过练习自愿或被迫地改变它需要相当大的努力。分析呈现利手性转变的研究可以扩展我们对这一现象的理解，因为了解如何改变它可能有助于我们理解它是如何发展的。因此，我们回顾了利手性转变的结果。结果表明，与利手性相关的神经不对称性可能是由于偏侧化练习的结果，因为它们与行为模式的改变相关。显然，练习不是影响利手性发展的唯一因素，但它似乎在神经和行为不对称性的形成和巩固中起着重要作用。我们的综述的另一个重要发现是，考虑到没有一项综述研究报告行为测量和大脑激活模式的完全转变，改变利手性方向和程度的能力似乎存在上限效应。