...
首页> 外文期刊>Neuropsychologia >Visual areas PPA and pSTS diverge from other processing modules during perceptual closure: Functional dichotomies within category selective networks
【24h】

Visual areas PPA and pSTS diverge from other processing modules during perceptual closure: Functional dichotomies within category selective networks

机译:视觉关闭期间,PPA和pSTS视觉区域与其他处理模块有所不同:类别选择网络中的功能二分法

获取原文
获取原文并翻译 | 示例
   

获取外文期刊封面封底 >>

       

摘要

The nature of neural processing within category-preferring visual networks remains an open topic in human neuroscience. Although the topography of face, scene, and object-preferring modules in the human brain is well established, the functional characterization, in terms of dynamic selectivity across their nodes is still elusive.Here, we use long trials of perceptually impoverished images of faces and objects to assess the dynamics of BOLD activity and selectivity induced by perceptual closure within these regions of interest. Departing from paradigms involving immediate percepts, we used ambiguous images favoring holistic search and independence from low level stimulus properties.By assessing the neural responses to images that go beyond the preferred category of the studied ROIs we could dissect the specificity of these processes as a function of the timing of perceptual closure and contribute to the debate regarding specialization of these modules.We found that pSTS is a notable exception to the observation that category selective high-level visual areas also participate on the perceptual closure of their non-preferred category. A similar observation was found for PPA responses to faces. Most importantly, these observations directly link the pSTS region with the social processing network, which cannot be engaged by object stimuli.
机译:偏好类别的视觉网络中神经处理的本质仍然是人类神经科学领域的一个开放课题。尽管人脑中人脸,场景和偏好对象模块的拓扑结构已经很好地建立了,但就其节点间的动态选择性而言,其功能性表征仍然难以捉摸。在此,我们对人脸和物体的感知贫困图像进行了长期试验目的是评估在这些感兴趣区域内感知闭合所引起的BOLD活性和选择性的动力学。与涉及立即感知的范式不同,我们使用了模糊图像,这些图像有利于整体搜索和独立于低水平刺激特性。我们发现pSTS是值得注意的例外,因为观察到类别选择性高级视觉区域也参与了其非优选类别的感知关闭。对于PPA对面部的反应,发现了类似的观察结果。最重要的是,这些观察直接将pSTS区域与社会处理网络联系在一起,而对象刺激无法参与其中。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号