Mitchell Rachel L C
School of Psychology, University of Reading, Whiteknights Road, Reading, Berkshire RG31 4RA, UK.
Brain Cogn. 2005 Oct;59(1):23-37. doi: 10.1016/j.bandc.2005.04.001.
Previous studies of the Stroop task propose two key mediators: the prefrontal and cingulate cortices but hints exist of functional specialization within these regions. This study aimed to examine the effect of task modality upon the prefrontal and cingulate response by examining the response to colour, number, and shape Stroop tasks whilst BOLD fMRI images were acquired on a Siemens 3T MRI scanner. Behavioural analyses indicated facilitation and interference effects and a noticeable effect of task difficulty. Some modular effects of modality were observed in the prefrontal cortex that survived exclusion of task difficulty related activations. No effect of task-relevant information was observed in the anterior cingulate. Future comparisons of the mediation of selective attention need to consider the effects of task context and task difficulty.
前额叶皮质和扣带回皮质，但这些区域内存在功能特化的迹象。本研究旨在通过在西门子3T MRI扫描仪上采集BOLD fMRI图像时，检查对颜色、数字和形状斯特鲁普任务的反应，来研究任务模态对前额叶和扣带回反应的影响。行为分析表明了促进和干扰效应以及任务难度的显著影响。在前额叶皮质中观察到了一些模态的模块化效应，这些效应在排除与任务难度相关的激活后仍然存在。在前扣带回中未观察到与任务相关信息的影响。未来对选择性注意中介作用的比较需要考虑任务背景和任务难度的影响。
