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The parahippocampal place area: recognition, navigation, or encoding?

机译:海马旁区域:识别,导航还是编码?

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摘要

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.
机译:在功能磁共振成像中,海马旁地方区域(PPA)已被证明对描绘地方的场景的反应比对其他种类的视觉刺激的反应更强烈。在这里,我们测试有关PPA功能的几种假设。我们发现PPA活动(1)不受受试者对所描绘位置的熟悉程度的影响;(2)当受试者在场景中体验运动感时,PPA的活动不会增加;(3)观看新颖场景与重复场景时的活动能力更大但不是新颖的面孔还是重复的面孔。因此,我们没有发现证据表明PPA参与了将知觉信息与存储在存储器中,规划路线中或通过局部或远端环境进行的运动监测中的表示形式进行匹配,但是一些证据表明它参与了有关外观的新知觉信息的编码和场景布局。

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