Salters Danielle, Scharoun Benson Sara M
Department of Kinesiology, University of Windsor, Windsor, Canada.
Laterality. 2022 May;27(3):308-323. doi: 10.1080/1357650X.2021.1990313. Epub 2021 Oct 17.
The current research compared hand selection in a preferential reaching paradigm with unimanual (i.e., pick-up cup) and bimanual (pick-up cup and pour from pitcher) tasks. In addition, relationships between self-report, questionnaire-based hand preference (unimanual and bimanual) and patterns of hand selection were assessed. Data offer support for a division of labour between the hands in at the midline; however, bimanual selection otherwise reflects consideration of object proximity (i.e., location) and comfort (i.e., biomechanical constraints). When grasping cups in right space, the right-hand was used to stabilize the cup and left-hand to mobilize the pitcher, whereas the opposite pattern was observed in left-space. Unimanual hand selection was also driven by object location. Subsequent analyses revealed a relationship between unimanual measures, but not bimanual measures of hand preference. Overall, findings support the notion that questionnaire data are associated with hand preference for grasping to a certain extent; however, use of a comprehensive battery of assessments is recommended when assessing and/or predicting handedness.
当前的研究在优先伸手范式中，将单手（即拿起杯子）和双手（拿起杯子并从水罐中倒水）任务中的手部选择进行了比较。此外，还评估了自我报告、基于问卷的手部偏好（单手和双手）与手部选择模式之间的关系。数据支持双手在中线处存在分工；然而，双手选择在其他方面反映了对物体接近度（即位置）和舒适度（即生物力学限制）的考虑。在右侧空间抓取杯子时，右手用于稳定杯子，左手用于移动水罐，而在左侧空间观察到相反的模式。单手手部选择也受物体位置驱动。后续分析揭示了单手测量之间的关系，但双手测量的手部偏好之间没有关系。总体而言，研究结果支持这样一种观点，即问卷数据在一定程度上与抓取的手部偏好相关；然而，在评估和/或预测利手时，建议使用一系列全面的评估方法。
