From the Selectedworks of Marcel Adam Just Graded Functional Activation in the Visuo-spatial System with the Amount of Task Demand Graded Functional Activation in the Visuospatial System with the Amount of Task Demand
From the Selectedworks of Marcel Adam Just Graded Functional Activation in the Visuo-spatial System with the Amount of Task Demand Graded Functional Activation in the Visuospatial System with the Amount of Task Demand
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通讯作者：
P. A. Carpenter;T. Keller;K. Thulborn;P. A. Carpenter;M. Just;T. Keller;W. Eddy;K. Thulborn
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作者：
P. A. Carpenter;T. Keller;K. Thulborn;P. A. Carpenter;M. Just;T. Keller;W. Eddy;K. Thulborn
两项研究探讨了计算需求的数量和类型如何与Shepard-Metzler（1971）心理旋转范式中涉及的三个双侧皮层区域的fMRI测量的激活相关。视觉空间坐标计算的需求量通过呈现具有增加的角度视差（0 °、40 °、80 °或120°）的心理旋转问题来操纵。在两个独立的研究中，左，右顶内沟区的激活与角度差异呈线性增加。激活也发生在梭状回和颞下区，这些区域主要与物体和物体部分识别过程有关。相比之下，对物体识别和
♦ Two studies examined how the amount and type of computational demand are related to fMRI-measured activation in three bilateral cortical regions involved in the Shepard-Metzler (1971) mental-rotation paradigm. The amount of demand for the computation of visuospatial coordinates was manipulated by presenting mental rotation problems with increasing angular disparity (0, 40, 80, or 120°). Activation in both the left and right intraparietal sulcal regions increased linearly with angular disparity in two separate studies. Activation also occurred in the fusiform gyrus and inferior temporal regions, regions that are primarily associated with the processes of object and object-part identification. By contrast, the demand for object recognition and