Functional network reconfiguration supporting memory-guided attention.
Functional network reconfiguration supporting memory-guided attention.
复制标题
支持记忆引导注意力的功能网络重新配置。
DOI：
10.1093/cercor/bhad073
复制
发表时间：
2023
期刊：
影响因子：
--
通讯作者：
Stern,ChantalE
中科院分区：
文献类型：
--
作者：
Isenburg,Kylie;Morin,ThomasM;Rosen,MayaL;Somers,DavidC;Stern,ChantalE
研究已经确定了几个大脑区域，它们的激活通过长期记忆促进了注意力的分配。我们在网络和特定节点水平上分析了基于任务的功能连接，以表征长期记忆引导注意力所在的大脑区域之间的大规模交流。我们预测，默认模式、认知控制和背侧注意子网络对长期记忆引导注意的贡献是不同的，因此网络水平的连通性将根据注意需求而改变，需要默认模式和认知控制子网络中记忆特定节点的贡献。我们预计，在长期记忆引导的注意过程中，这些节点将增加彼此之间的连通性，并增加与背侧注意子网的连通性。此外，我们假设认知控制和促进外部注意需求的背部注意网络之间存在联系。我们的结果确认了基于网络和节点特定的相互作用，它们促进了LTM引导注意的不同组成部分，表明在楔前后部和回脾皮质中起着关键作用，独立于默认模式和认知控制子网络的划分而起作用。我们发现了楔前连接的梯度，其中背侧楔前连接到认知控制和背侧注意区域，腹侧楔前连接所有的子网络。此外，脾后皮质显示跨子网络的连接性增加。我们认为，来自背侧后中线区域的连接对于外部信息与内部记忆的整合至关重要，这有助于长期记忆引导的注意。
Studies have identified several brain regions whose activations facilitate attentional deployment via long-term memories. We analyzed task-based functional connectivity at the network and node-specific level to characterize large-scale communication between brain regions underlying long-term memory guided attention. We predicted default mode, cognitive control, and dorsal attention subnetworks would contribute differentially to long-term memory guided attention, such that network-level connectivity would shift based on attentional demands, requiring contribution of memory-specific nodes within default mode and cognitive control subnetworks. We expected that these nodes would increase connectivity with one another and with dorsal attention subnetworks during long-term memory guided attention. Additionally, we hypothesized connectivity between cognitive control and dorsal attention subnetworks facilitating external attentional demands. Our results identified both network-based and node-specific interactions that facilitate different components of LTM-guided attention, suggesting a crucial role across the posterior precuneus and restrosplenial cortex, acting independently from the divisions of default mode and cognitive control subnetworks. We found a gradient of precuneus connectivity, with dorsal precuneus connecting to cognitive control and dorsal attention regions, and ventral precuneus connecting across all subnetworks. Additionally, retrosplenial cortex showed increased connectivity across subnetworks. We suggest that connectivity from dorsal posterior midline regions is critical for the integration of external information with internal memory that facilitates long-term memory guided attention.
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DOI：
10.1073/pnas.0905314106
发表时间：
2009-11-24
影响因子：
11.1
作者：
Margulies, Daniel S.;Vincent, Justin L.;Petrides, Michael
通讯作者：
Petrides, Michael
影响因子：
3.2
作者：
Li, Rosa;Utevsky, Amanda V.;van Duijvenvoorde, Anna C. K.
通讯作者：
van Duijvenvoorde, Anna C. K.
DOI：
10.1073/pnas.1605719113
发表时间：
2016-11-15
影响因子：
11.1
作者：
Brodt, Svenja;Poehlchen, Dorothee;Schoenauer, Monika
通讯作者：
Schoenauer, Monika
DOI：
10.1037/a0022189
发表时间：
2011-08-01
影响因子：
2.1
作者：
Koch, Iring;Lawo, Vera;Vorlaender, Michael
通讯作者：
Vorlaender, Michael