Division of Neuropsychology, Center of Neurology, Hertie-Institute for Clinical Brain Research, University of Tübingen Tübingen, Germany.
Front Hum Neurosci. 2013 Aug 28;7:513. doi: 10.3389/fnhum.2013.00513. eCollection 2013.
In a recent neuroimaging study the comparison of intact vs. disturbed perception of global gestalt indicated a significant role of the temporo-parietal junction (TPJ) in the intact perception of global gestalt (Huberle and Karnath, 2012). This location corresponded well with the areas known to be damaged or impaired in patients with simultanagnosia after stroke or due to neurodegenerative diseases. It was concluded that the TPJ plays an important role in the integration of individual items to a holistic percept. Thus, increased BOLD signals should be found in this region whenever a task calls for the integration of multiple visual items. Behavioral experiments in chess experts suggested that their superior skills in comparison to chess novices are partly based on fast holistic processing of chess positions with multiple pieces. We thus analyzed BOLD data from four fMRI studies that compared chess experts with chess novices during the presentation of complex chess-related visual stimuli (Bilalić et al., 2010, 2011a,b, 2012). Three regions of interests were defined by significant TPJ clusters in the abovementioned study of global gestalt perception (Huberle and Karnath, 2012) and BOLD signal amplitudes in these regions were compared between chess experts and novices. These cross-paradigm ROI analyses revealed higher signals at the TPJ in chess experts in comparison to novices during presentations of complex chess positions. This difference was consistent across the different tasks in five independent experiments. Our results confirm the assumption that the TPJ region identified in previous work on global gestalt perception plays an important role in the processing of complex visual stimulus configurations.
在最近的一项神经影像学研究中，对完整与受损的整体格式塔知觉的比较表明，颞顶联合区（TPJ）在整体格式塔知觉的完整性中起着重要作用（Huberle 和 Karnath，2012）。该位置与中风后或神经退行性疾病导致的同时失认症患者受损或受损的区域非常吻合。研究结论认为，TPJ 在将单个项目整合为整体感知中起着重要作用。因此，当任务需要整合多个视觉项目时，该区域应该会发现更多的 BOLD 信号。与国际象棋新手相比，国际象棋专家在国际象棋方面的技能更出色，这在行为实验中得到了证明，这部分是基于他们对具有多个棋子的国际象棋位置进行快速整体处理的能力。因此，我们分析了四项 fMRI 研究的数据，这些研究比较了国际象棋专家和新手在呈现复杂的与国际象棋相关的视觉刺激时的大脑活动（Bilalić 等人，2010、2011a、b、2012）。通过上述整体格式塔知觉研究（Huberle 和 Karnath，2012）确定的颞顶联合区（TPJ）的显著聚类，定义了三个感兴趣区域，并比较了这些区域中专家和新手的大脑活动。这些跨范式 ROI 分析显示，在呈现复杂的国际象棋位置时，专家的 TPJ 区域的信号强度高于新手。在五个独立的实验中，这种差异在不同的任务中是一致的。我们的研究结果证实了这样一种假设，即在之前关于整体格式塔知觉的研究中确定的 TPJ 区域在处理复杂的视觉刺激配置方面起着重要作用。
