Seymour Kiley, Karnath Hans-Otto, Himmelbach Marc
Section Neuropsychology, Center for Neurology, Hertie-Institute for Clinical Brain Research, Eberhard Karls University, Tuebingen, Germany.
Neuroreport. 2008 Dec 3;19(18):1769-72. doi: 10.1097/WNR.0b013e328318ed82.
The perception of global scenes and objects consisting of multiple constituents is based on the integration of local elements or features. Gestalt grouping cues, such as proximity or similarity, can aid this process. Using functional MRI we investigated whether grouping guided by different gestalt cues rely on distinct networks in the brain or share a common network. Our study revealed that gestalt grouping involved the inferior parietal cortex, middle temporal gyrus and prefrontal cortex irrespective of the specific cue used. These findings agree with observations in neurological patients, which suggest that inferior parietal regions may aid the integration of local features into a global gestalt. Damage to this region results in simultanagnosia, a deficit in perceiving multiple objects and global scenes.
对由多个成分组成的全局场景和物体的感知是基于局部元素或特征的整合。格式塔分组线索，如接近性或相似性，有助于这一过程。我们使用功能磁共振成像研究了由不同格式塔线索引导的分组是依赖于大脑中不同的网络还是共享一个共同的网络。我们的研究表明，无论使用何种特定线索，格式塔分组都涉及顶下小叶、颞中回和前额叶皮质。这些发现与对神经疾病患者的观察结果一致，这些观察结果表明，顶下区域可能有助于将局部特征整合为一个全局格式塔。该区域受损会导致同时失认症，即感知多个物体和全局场景的缺陷。
