van der Ham Ineke J M, Brummelman Jantina, Aerts Marie Elise, de Haan Alyanne M, Dijkerman H Chris
Department of Health, Medical, and Neuropsychology, Leiden University, Wassenaarseweg 52, 2333 AK, Leiden, The Netherlands.
Department of Experimental Psychology, Helmholtz Institute Utrecht University, Utrecht, The Netherlands.
Cogn Process. 2018 Feb;19(1):17-25. doi: 10.1007/s10339-017-0833-6. Epub 2017 Sep 4.
Lateralized pointing has been shown to cause not only a shift in visuo-motor midline, but also a shift in non-lateralized spatial attention. Non-lateralized cognitive consequences of lateralized pointing have been reported for local and global visuospatial processing. Here, we evaluate these findings and examine this effect for categorical and coordinate spatial relation processing, for which the attentional processes are thought to be highly similar to local and global visuospatial processing, respectively. Participants performed a commonly used working memory task to assess categorical and coordinate spatial relation processing. Lateralized pointing with either the left or the right hand, to either the left or the right side was introduced as a manipulation, as well as a new control condition without any pointing. Performance on the spatial relation task was measured before and after pointing. The results suggest that non-lateralized consequences of lateralized pointing cannot be generalized to other cognitive tasks relying on attentional processing. Further examination of lateralized pointing is recommended before drawing further conclusions concerning its impact on non-lateralized cognition.
已证明偏侧化指向不仅会导致视觉运动中线的偏移，还会导致非偏侧化空间注意力的偏移。偏侧化指向的非偏侧化认知后果已在局部和全局视觉空间处理方面有所报道。在此，我们评估这些发现，并针对分类和坐标空间关系处理来检验这种效应，人们认为这两种处理的注意过程分别与局部和全局视觉空间处理高度相似。参与者执行一项常用的工作记忆任务，以评估分类和坐标空间关系处理。引入用左手或右手向左或右侧进行偏侧化指向作为一种操作，以及一种无任何指向的新对照条件。在指向前后测量空间关系任务的表现。结果表明，偏侧化指向的非偏侧化后果不能推广到依赖注意处理的其他认知任务。在就其对非偏侧化认知的影响得出进一步结论之前，建议对偏侧化指向进行进一步研究。
