Saban William, Gabay Shai, Kalanthroff Eyal
Department of Psychology and the Institute of Information Processing and Decision Making (IIPDM), University of Haifa, Israel.
Department of Psychology and the Institute of Information Processing and Decision Making (IIPDM), University of Haifa, Israel.
Acta Psychol (Amst). 2018 Sep;189:36-42. doi: 10.1016/j.actpsy.2017.03.001. Epub 2017 Mar 12.
The literature has long emphasized the role of the cerebral cortex in executive functions. Recently, however, several researchers have suggested that subcortical areas might also be involved in executive functions. The current study explored the possibility that subcortical mechanisms have a functional role in adaptive resolution of Stroop interference. We asked 20 participants to complete a cued task-switching Stroop task with variable cue-target intervals (CTI). Using a stereoscope, we manipulated which eye was shown the relevant dimension and which was shown the irrelevant dimension. This technique allowed us to examine the involvement of monocularly segregated - subcortical - regions of the visual processing stream. The interference effect was modulated by this eye-of-origin manipulation in the 0 CTI condition. This finding provides a novel indication for the notion that subcortical regions have a functional role in the resolution of Stroop interference. This indication suggests that cortical regions are not solely involved and that a dynamic interaction between cortical and subcortical regions is involved in executive functions.
长期以来，文献一直强调大脑皮层在执行功能中的作用。然而，最近有几位研究人员提出，皮层下区域可能也参与执行功能。当前的研究探讨了皮层下机制在适应性解决斯特鲁普干扰中发挥功能作用的可能性。我们让20名参与者完成一项带有可变提示-目标间隔（CTI）的提示任务切换斯特鲁普任务。使用立体镜，我们操控哪只眼睛看到相关维度，哪只眼睛看到无关维度。这项技术使我们能够研究视觉处理流中单眼分离的——皮层下的——区域的参与情况。在0 CTI条件下，这种起源眼操控调节了干扰效应。这一发现为皮层下区域在解决斯特鲁普干扰中发挥功能作用这一观点提供了新的证据。这一证据表明，皮层区域并非唯一参与其中，皮层和皮层下区域之间的动态相互作用参与了执行功能。
