Abstract:
: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.
journal_name
Neuronjournal_title
Neuronauthors
Gauthier I,Hayward WG,Tarr MJ,Anderson AW,Skudlarski P,Gore JCdoi
10.1016/s0896-6273(02)00622-0subject
Has Abstractpub_date
2002-03-28 00:00:00pages
161-71issue
1eissn
0896-6273issn
1097-4199pii
S0896627302006220journal_volume
34pub_type
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