Frontoparietal networks contribute to complex cognitive functions in humans and macaques, such as working memory, attention, task-switching, response suppression, grasping, reaching, and eye movement control. However, there has been no comprehensive examination of the functional organization of frontoparietal networks using functional magnetic resonance imaging in the New World common marmoset monkey (Callithrix jacchus), which is now widely recognized as a powerful nonhuman primate experimental animal. In this study, we employed hierarchical clustering of interareal blood oxygen level–dependent signals to investigate the hypothesis that the organization of the frontoparietal cortex in the marmoset follows the organizational principles of the macaque frontoparietal system. We found that the posterior part of the lateral frontal cortex (premotor regions) was functionally connected to the anterior parietal areas, while more anterior frontal regions (frontal eye field [FEF]) were connected to more posterior parietal areas (the region around the lateral intraparietal area [LIP]). These overarching patterns of interareal organization are consistent with a recent macaque study. These findings demonstrate parallel frontoparietal processing streams in marmosets and support the functional similarities of FEF–LIP and premotor–anterior parietal pathways between marmoset and macaque.

中文翻译：

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用清醒静息状态 fMRI 研究狨猴额顶叶皮层的功能组织

额顶叶网络有助于人类和猕猴的复杂认知功能，例如工作记忆、注意力、任务转换、反应抑制、抓握、伸手可及和眼球运动控制。然而，尚未使用功能磁共振成像对新世界普通狨猴 (Callithrix jacchus) 的额顶网络的功能组织进行全面检查，该猴现已被广泛认为是一种强大的非人类灵长类动物实验动物。在这项研究中，我们采用区域间血氧水平依赖信号的层次聚类来研究狨猴额顶叶皮层组织遵循猕猴额顶叶系统组织原则的假设。我们发现外侧额叶皮层的后部（运动前区）在功能上连接到前顶叶区域，而更多的前额区域（额叶视野 [FEF]）连接到更多的后顶叶区域（外侧区域周围的区域）。顶内区 [LIP])。这些区域间组织的总体模式与最近的猕猴研究一致。这些发现证明了狨猴中平行的额顶叶加工流，并支持 FEF-LIP 和狨猴和猕猴之间运动前顶叶通路的功能相似性。这些区域间组织的总体模式与最近的猕猴研究一致。这些发现证明了狨猴中平行的额顶叶加工流，并支持 FEF-LIP 和狨猴和猕猴之间运动前顶叶通路的功能相似性。这些区域间组织的总体模式与最近的猕猴研究一致。这些发现证明了狨猴中平行的额顶叶加工流，并支持 FEF-LIP 和狨猴和猕猴之间运动前顶叶通路的功能相似性。