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Control of shared representations relies on key processes involved in mental state attribution.

ABSTRACT: Action observation leads to the automatic activation of the corresponding motor representation in the observer through "mirror-matching." This constitutes a "shared representational system," which is thought to subserve social understanding by motor simulation. However, it is unclear how these shared representations can be controlled and distinguished. Brain imaging suggests that controlling shared representations, indexed by the ability to control automatic imitative responses, activates anterior fronto-median cortex (aFMC), and temporo-parietal junction (TPJ). Crucially, these regions are also consistently implicated in mental state attribution and have provided an alternative account for higher-level social cognition. Here, we directly tested whether social-cognitive processes involve similar key computational mechanisms as the control of shared representations by using functional brain imaging to reveal overlapping brain circuits. We show in a within-subject design that commonly activated regions occurred selectively in aFMC and TPJ. Mentalizing and self-referential thoughts recruited a region in aFMC, which was also activated when controlling imitation. In the TPJ, an area overlapped between mentalizing, agency processing, and imitative control. Behavioral and neural correlates of mentalizing were further related to the individual ability for controlling imitation. Our findings support the assumption of shared key processes and suggest a novel link between embodied and social cognition.

SUBMITTER: Spengler S

PROVIDER: S-EPMC6870802 | biostudies-literature | 2009 Nov

REPOSITORIES: biostudies-literature

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Control of shared representations relies on key processes involved in mental state attribution.

Spengler Stephanie S von Cramon D Yves DY Brass Marcel M

Human brain mapping 20091101 11

Action observation leads to the automatic activation of the corresponding motor representation in the observer through "mirror-matching." This constitutes a "shared representational system," which is thought to subserve social understanding by motor simulation. However, it is unclear how these shared representations can be controlled and distinguished. Brain imaging suggests that controlling shared representations, indexed by the ability to control automatic imitative responses, activates anteri ...[more]

PMID: 19517530

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Project description:The main question of Theory of Mind research is not only how we represent others' mental states, but also how these representations influence our first-person interaction with our surrounding environment. A novel theory of belief files proposes that we should think about belief tracking as an online, spontaneous, and effortless mechanism giving rise to structured representations, thus easing the use of beliefs in behavior selection. Beliefs are formed by two different sub mechanisms: (1) opening an empty placeholder belief file, for a particular intentional agent, and (2) filling it up with mental content attributed to the agent. This theory opens the possibility of exploiting theory of mind abilities even in situations when we can attribute only underspecified mental contents to others. The goal of the present study was to provide a proof of concept test: whether spontaneous belief tracking starts effortlessly even when we do not know a partner's actual belief content. We created an object detection paradigm, where the visual access of a virtual agent to the object to be detected by the participant was manipulated. The agent getting access to the information for processing always preceded the participant getting access to it, resulting in the need of attributing belief without specified content in it. Our results have shown that participants detected the object with a reduced reaction time when the observed agent had visual access to the object's expected place compared to when the participant watched the same scenario, but the object's location remained occluded for the observed agent and thus was revealed only for the participant. This suggests that the information processing of humans speeds up when another agent has access to a piece of information as well. Thus, we do track agents' potential beliefs without knowing its actual content. This study contributes to our understanding of the effect of spontaneous computation of others' mental states on first-person information processing.

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Control of shared representations relies on key processes involved in mental state attribution.

Publications

Control of shared representations relies on key processes involved in mental state attribution.

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