BOLD activity during mental rotation and viewpoint-dependent object recognition
BOLD activity during mental rotation and viewpoint-dependent object recognition
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DOI：
10.1016/s0896-6273(02)00622-0
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发表时间：
2002-03-28
期刊：
影响因子：
16.2
通讯作者：
Gore, JC
中科院分区：
文献类型：
--
作者：
Gauthier, I;Hayward, WG;Gore, JC
我们测量了心理旋转和物体识别过程中的大脑活动，物体围绕三个不同的轴旋转。在上级顶叶（SPL）的活动增加成比例的视点差异在心理旋转，但不是在物体识别。与此相反，梭状回优先招聘的观点依赖的方式识别相比，心理旋转。此外，独立于视点的影响，物体识别与腹侧区和心理旋转与背侧区。这些结果表明，在这两个任务中获得的类似的行为效果的观点是基于不同的神经基板。这样的发现质疑的假设，心理旋转是用来补偿在物体识别过程中的观点的变化。
We measured brain activity during mental rotation and object recognition with objects rotated around three different axes. Activity in the superior parietal lobe (SPL) increased proportionally to viewpoint disparity during mental rotation, but not during object recognition. In contrast, the fusiform gyrus was preferentially recruited in a viewpoint-dependent manner in recognition as compared to mental rotation. In addition, independent of the effect of viewpoint, object recognition was associated with ventral areas and mental rotation with dorsal areas. These results indicate that the similar behavioral effects of viewpoint obtained in these two tasks are based on different neural substrates. Such findings call into question the hypothesis that mental rotation is used to compensate for changes in viewpoint during object recognition.