当前位置: X-MOL 学术Hum. Brain Mapp. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Supramodal neural networks support top‐down processing of social signals
Human Brain Mapping ( IF 4.8 ) Pub Date : 2020-10-19 , DOI: 10.1002/hbm.25252
Melina Sonderfeld 1, 2 , Klaus Mathiak 1, 2 , Gianna S Häring 1, 2 , Sarah Schmidt 3 , Ute Habel 1, 2 , Raquel Gur 4 , Martin Klasen 1, 2, 5
Affiliation  

The perception of facial and vocal stimuli is driven by sensory input and cognitive top‐down influences. Important top‐down influences are attentional focus and supramodal social memory representations. The present study investigated the neural networks underlying these top‐down processes and their role in social stimulus classification. In a neuroimaging study with 45 healthy participants, we employed a social adaptation of the Implicit Association Test. Attentional focus was modified via the classification task, which compared two domains of social perception (emotion and gender), using the exactly same stimulus set. Supramodal memory representations were addressed via congruency of the target categories for the classification of auditory and visual social stimuli (voices and faces). Functional magnetic resonance imaging identified attention‐specific and supramodal networks. Emotion classification networks included bilateral anterior insula, pre‐supplementary motor area, and right inferior frontal gyrus. They were pure attention‐driven and independent from stimulus modality or congruency of the target concepts. No neural contribution of supramodal memory representations could be revealed for emotion classification. In contrast, gender classification relied on supramodal memory representations in rostral anterior cingulate and ventromedial prefrontal cortices. In summary, different domains of social perception involve different top‐down processes which take place in clearly distinguishable neural networks.

中文翻译:

超模态神经网络支持社交信号的自上而下处理

面部和声音刺激的感知是由感官输入和认知自上而下的影响驱动的。重要的自上而下的影响是注意力集中和超模态社会记忆表征。本研究调查了这些自上而下过程背后的神经网络及其在社会刺激分类中的作用。在一项对 45 名健康参与者进行的神经影像学研究中,我们采用了内隐联想测试的社会适应性。注意焦点通过分类任务进行修改,该任务使用完全相同的刺激集比较社会感知的两个领域(情感和性别)。通过听觉和视觉社会刺激(声音和面部)分类的目标类别的一致性来解决超模态记忆表征。功能磁共振成像确定了注意力特异性和超模态网络。情绪分类网络包括双侧前脑岛、前辅助运动区和右侧额下回。它们是纯粹的注意力驱动的,独立于刺激模式或目标概念的一致性。对于情绪分类,无法揭示超模态记忆表征的神经贡献。相比之下,性别分类依赖于嘴侧前扣带回和腹内侧前额叶皮质的超模态记忆表征。总之,社会感知的不同领域涉及不同的自上而下的过程,这些过程发生在清晰可辨的神经网络中。前辅助运动区和右侧额下回。它们是纯粹的注意力驱动的,独立于刺激模式或目标概念的一致性。对于情绪分类,无法揭示超模态记忆表征的神经贡献。相比之下,性别分类依赖于嘴侧前扣带回和腹内侧前额叶皮质的超模态记忆表征。总之,社会感知的不同领域涉及不同的自上而下的过程,这些过程发生在清晰可辨的神经网络中。前辅助运动区和右侧额下回。它们是纯粹的注意力驱动的,独立于刺激模式或目标概念的一致性。对于情绪分类,无法揭示超模态记忆表征的神经贡献。相比之下,性别分类依赖于嘴侧前扣带回和腹内侧前额叶皮质的超模态记忆表征。总之,社会感知的不同领域涉及不同的自上而下的过程,这些过程发生在清晰可辨的神经网络中。性别分类依赖于嘴侧前扣带回和腹内侧前额叶皮层的超模态记忆表征。总之,社会感知的不同领域涉及不同的自上而下的过程,这些过程发生在清晰可辨的神经网络中。性别分类依赖于嘴侧前扣带回和腹内侧前额叶皮层的超模态记忆表征。总之,社会感知的不同领域涉及不同的自上而下的过程,这些过程发生在清晰可辨的神经网络中。
更新日期:2020-10-19
down
wechat
bug