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Brain Mechanisms for Processing Direct and Averted Gaze in Individuals with Autism

机译:自闭症个体处理直接和避免凝视的大脑机制

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摘要

Prior studies have indicated brain abnormalities underlying social processing in autism, but no fMRI study has specifically addressed the differential processing of direct and averted gaze, a critical social cue. Fifteen adolescents and adults with autism and 14 typically developing comparison participants viewed dynamic virtual-reality videos depicting a simple but realistic social scenario, in which an approaching male figure maintained either direct or averted gaze. Significant group by condition interactions reflecting differential responses to direct versus averted gaze in people with autism relative to typically developing individuals were identified in the right temporoparietal junction, right anterior insula, left lateral occipital cortex, and left dorsolateral prefrontal cortex. Our results provide initial evidence regarding brain mechanisms underlying the processing of gaze direction during simple social encounters, providing new insight into the social deficits in individuals with autism.
机译:先前的研究表明自闭症中社会加工背后的大脑异常,但没有功能磁共振成像研究专门针对直接和避免的注视(一种关键的社会线索)的差异加工。 15名患有自闭症的青少年和成人以及14名通常正在发展的比较参与者观看了动态的虚拟现实视频,这些视频描绘了一个简单而现实的社交场景,在其中接近的男性人物保持了直接或避免的目光。在右颞顶叶交界处,右前岛鞘,左侧枕叶皮层和左侧背外侧前额叶皮层中发现了显着的逐组条件相互作用,反映了自闭症患者相对于典型发育个体对直接注视和避免注视的不同反应。我们的研究结果提供了有关在简单社交活动中处理注视方向的大脑机制的初步证据,从而为自闭症患者的社交缺陷提供了新见解。

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