Sociotopy in the temporoparietal cortex: common versus distinct processes
Sociotopy in the temporoparietal cortex: common versus distinct processes
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DOI：
10.1093/scan/nsp045
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发表时间：
2010-03-01
影响因子：
4.2
通讯作者：
Heekeren, Hauke R.
中科院分区：
文献类型：
--
作者：
Bahnemann, Markus;Dziobek, Isabel;Heekeren, Hauke R.
在社会认知神经科学中，关于各种任务诱发的颞后上沟和邻近颞顶交界处（pSTS/ tpj区）的活动是否代表一个共同的过程或不同的过程的争论一直存在。为了研究这个问题，我们在被试执行生物运动（BM）、心理理论（ToM）和道德判断（MJ）任务时使用了功能磁共振成像（fMRI）。重要的是，对于每个任务，我们都使用了相同的新开发的动画刺激。我们在右侧pSTS中发现了BM和ToM的小簇重叠活动，在双侧pSTS和左侧TPJ中发现了ToM和MJ的小簇重叠活动。相反，我们在右侧pSTS中检测到BM，在双侧pSTS和左侧TPJ中检测到ToM，在双侧pSTS和TPJ中检测到MJ，这表明了不同的过程。因此，我们的数据为两阶段结合的过程解释提供了强有力的证据：(i)解析视觉空间信息流，由右侧pSTS的活动表示，其中发现所有三个任务的相邻和重叠的响应簇；(2)对他人行为的交际意义加工日益复杂，表现为ToM和MJ诱导的左pSTS和双侧TPJ活动层次性增强。
A major controversy in the social cognitive neurosciences evolved around the question whether activity in the posterior superior temporal sulcus and adjacent temporoparietal junction (pSTS/TPJ-region) evoked by various tasks represents a common process or distinct processes. To investigate this question, we employed functional magnetic resonance imaging (fMRI) while participants performed Biological Motion (BM), Theory-of-Mind (ToM) and Moral Judgment (MJ) tasks. Importantly, for each task we used the same newly developed animated stimuli. Indicative of a common process, we identified small clusters of overlapping activity for BM and ToM in right pSTS and for ToM and MJ in bilateral pSTS and left TPJ. Indicative of distinct processes, on the contrary, we detected extensive dissociable activity for BM in right pSTS, for ToM in bilateral pSTS and left TPJ, and for MJ in bilateral pSTS and TPJ. Thus, our data provide strong evidence for a combined two-staged process account: (i) the parsing of a stream of visual-spatial information, represented by activity in right pSTS, where neighboring and overlapping clusters of increased responses were found for all three tasks; (ii) increasingly more complex processing of the communicative significance of other people's behavior, represented by hierarchically increasing activity in left pSTS and bilateral TPJ elicited by ToM and MJ.