The parahippocampal place area: Recognition, navigation, or encoding?
The parahippocampal place area: Recognition, navigation, or encoding?
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DOI：
10.1016/s0896-6273(00)80758-8
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发表时间：
1999-05-01
期刊：
影响因子：
16.2
通讯作者：
Kanwisher, N
中科院分区：
文献类型：
--
作者：
Epstein, R;Harris, A;Kanwisher, N
在功能磁共振成像中，海马旁位置区 (PPA) 已被证明对描绘位置的场景的反应比对其他类型的视觉刺激的反应更强烈。在这里，我们测试了关于 PPA 功能的几个假设。我们发现，PPA 活动（1）不受受试者对所描绘地点的熟悉程度的影响，（2）当受试者在场景中体验到运动感时，PPA 活动不会增加；（3）当观看新场景与重复场景时，PPA 活动更大，但当观看新奇与重复面孔时，PPA 活动则不会增加。因此，我们没有发现任何证据表明 PPA 参与将感知信息与记忆中存储的表示相匹配、规划路线或监控通过本地或远端环境的运动，但有证据表明 PPA 参与编码有关场景外观和布局的新感知信息。
The parahippocampal place area (PPA) has been demonstrated to respond more strongly in fMRI to scenes depicting places than to other kinds of visual stimuli. Here, we test several hypotheses about the function of the PPA. We find that PPA activity (1) is not affected by the subjects' familiarity with the place depicted, (2) does not increase when subjects experience a sense of motion through the scene, and (3) is greater when viewing novel versus repeated scenes but not novel versus repeated faces. Thus, we find no evidence that the PPA is involved in matching perceptual information to stored representations in memory, in planning routes, or in monitoring locomotion through the local or distal environment but some evidence that it is involved in encoding new perceptual information about the appearance and layout of scenes.