Tagaris G A, Kim S G, Strupp J P, Andersen P, Uğurbil K, Georgopoulos A P
Brain Sciences Center (11B), Veterans Affairs Medical Center, Minneapolis, MN 55417, USA.
Neuroreport. 1996 Feb 29;7(3):773-6. doi: 10.1097/00001756-199602290-00022.
The quantitative relationships between functional activation of the superior parietal lobule (SPL) and performance in the Shepard-Metzler mental rotation task were investigated in 16 human subjects using magnetic resonance (MR) imaging at high field (4 Tesla). Subjects were shown pairs of perspective drawings of three-dimensional objects and asked to judge whether they were the same or mirror images. Increased SPL activation was associated with a higher proportion of errors in performance. The increase in errors, and the concomitant increase in SPL activation, could be due to an increased difficulty in, and therefore increased demands for, information processing at several stages involved in making a decision, including encoding of the visual images shown, mentally rotating them, and judging whether they are the same or mirror images.
利用4特斯拉高场磁共振成像技术，对16名人类受试者进行研究，以探讨顶上小叶（SPL）的功能激活与谢泼德-梅茨勒心理旋转任务表现之间的定量关系。向受试者展示三维物体的透视画对，并要求他们判断这些物体是相同的还是镜像的。SPL激活增加与表现中更高比例的错误相关。错误的增加以及随之而来的SPL激活增加，可能是由于在做出决策所涉及的几个阶段，包括对所展示视觉图像的编码、在脑海中旋转它们以及判断它们是相同的还是镜像的，信息处理难度增加，因此需求也增加。
