Default mode network shows distinct emotional and contextual responses yet common effects of retrieval demands across tasks
文献类型：期刊论文
| 作者 | Souter, Nicholas E.1,8,9; de Freitas, Antonia7,9; Zhang, Meichao5,6,9 ; Shao, Ximing7,9; Alam, Tirso Rene del Jesus Gonzalez4,9; Engen, Haakon3,10; Smallwood, Jonathan2; Krieger-Redwood, Katya9; Jefferies, Elizabeth9
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| 刊名 | HUMAN BRAIN MAPPING
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| 出版日期 | 2024-05-01 |
| 卷号 | 45期号:7页码:17 |
| 关键词 | association context default emotion gradient semantic switch |
| ISSN号 | 1065-9471 |
| DOI | 10.1002/hbm.26703 |
| 通讯作者 | Souter, Nicholas E.(n.souter@sussex.ac.uk) |
| 英文摘要 | The default mode network (DMN) lies towards the heteromodal end of the principal gradient of intrinsic connectivity, maximally separated from the sensory-motor cortex. It supports memory-based cognition, including the capacity to retrieve conceptual and evaluative information from sensory inputs, and to generate meaningful states internally; however, the functional organisation of DMN that can support these distinct modes of retrieval remains unclear. We used fMRI to examine whether activation within subsystems of DMN differed as a function of retrieval demands, or the type of association to be retrieved, or both. In a picture association task, participants retrieved semantic associations that were either contextual or emotional in nature. Participants were asked to avoid generating episodic associations. In the generate phase, these associations were retrieved from a novel picture, while in the switch phase, participants retrieved a new association for the same image. Semantic context and emotion trials were associated with dissociable DMN subnetworks, indicating that a key dimension of DMN organisation relates to the type of association being accessed. The frontotemporal and medial temporal DMN showed a preference for emotional and semantic contextual associations, respectively. Relative to the generate phase, the switch phase recruited clusters closer to the heteromodal apex of the principal gradient-a cortical hierarchy separating unimodal and heteromodal regions. There were no differences in this effect between association types. Instead, memory switching was associated with a distinct subnetwork associated with controlled internal cognition. These findings delineate distinct patterns of DMN recruitment for different kinds of associations yet common responses across tasks that reflect retrieval demands. This study used fMRI to explore functional dissociations within the default mode network (DMN). Dissociable subnetworks were found to support the retrieval of contextual semantic and emotional associations, while task retrieval demands independently influenced the recruitment of heteromodal regions on the principal gradient of cortical organisation. image |
| 收录类别 | SCI |
| WOS关键词 | ANTERIOR TEMPORAL-LOBE ; DORSAL ATTENTION ; REGIONS ; MEMORY ; FMRI ; REPRESENTATION ; METAANALYSIS ; GRADIENT ; BRAIN ; GYRUS |
| 资助项目 | European Research Council ; [FLEXSEM-771863] |
| WOS研究方向 | Neurosciences & Neurology ; Radiology, Nuclear Medicine & Medical Imaging |
| 语种 | 英语 |
| WOS记录号 | WOS:001215470100001 |
| 出版者 | WILEY |
| 资助机构 | European Research Council |
| 源URL | [http://ir.psych.ac.cn/handle/311026/47663]  |
| 专题 | 心理研究所_中国科学院行为科学重点实验室 |
| 通讯作者 | Souter, Nicholas E. |
| 作者单位 | 1.Univ Sussex, Sch Psychol, Falmer BN1 9QH, England 2.Queens Univ, Dept Psychol, Kingston, ON, Canada 3.Inst Mil Psychiat, Joint Med Serv, Norwegian Armed Forces, Oslo, Norway 4.Bangor Univ, Sch Psychol & Sports Sci, Bangor, Wales 5.Univ Chinese Acad Sci, Dept Psychol, Beijing, Peoples R China 6.Inst Psychol, CAS Key Lab Behav Sci, Beijing, Peoples R China 7.UCL, Div Psychol & Language Sci, Expt Psychol, London, England 8.Univ Sussex, Sch Psychol, Brighton, England 9.Univ York, Dept Psychol, York, England 10.Univ Oslo, Dept Psychol, Oslo, Norway |
| 推荐引用方式 GB/T 7714 | Souter, Nicholas E.,de Freitas, Antonia,Zhang, Meichao,et al. Default mode network shows distinct emotional and contextual responses yet common effects of retrieval demands across tasks[J]. HUMAN BRAIN MAPPING,2024,45(7):17. |
| APA | Souter, Nicholas E..,de Freitas, Antonia.,Zhang, Meichao.,Shao, Ximing.,Alam, Tirso Rene del Jesus Gonzalez.,...&Jefferies, Elizabeth.(2024).Default mode network shows distinct emotional and contextual responses yet common effects of retrieval demands across tasks.HUMAN BRAIN MAPPING,45(7),17. |
| MLA | Souter, Nicholas E.,et al."Default mode network shows distinct emotional and contextual responses yet common effects of retrieval demands across tasks".HUMAN BRAIN MAPPING 45.7(2024):17. |
入库方式： OAI收割
来源：心理研究所
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