11/29/2023 0 Comments Thebrain 9 import outline![]() Received: SeptemAccepted: Published: June 2, 2021Ĭopyright: © 2021 Barnett et al. ![]() PLoS Biol 19(6):Īcademic Editor: Raphael Kaplan, Kavli Institute for Systems Neuroscience, NORWAY Finally, a Neurosynth meta-analysis of fMRI studies suggests new hypotheses regarding the functions of the MTN and DMN subnetworks, providing a framework to guide future research on the neural architecture of episodic memory.Ĭitation: Barnett AJ, Reilly W, Dimsdale-Zucker HR, Mizrak E, Reagh Z, Ranganath C (2021) Intrinsic connectivity reveals functionally distinct cortico-hippocampal networks in the human brain. These networks vary in their functional connectivity (FC) along the hippocampal long axis and represent different kinds of information during memory-guided decision-making. The DMN could be further divided into 3 subnetworks: a “posterior medial” (PM) subnetwork comprised of posterior cingulate and lateral parietal cortices an “anterior temporal” (AT) subnetwork comprised of regions in the temporopolar and dorsomedial prefrontal cortex and a “medial prefrontal” (MP) subnetwork comprised of regions primarily in the medial prefrontal cortex (mPFC). We observed that the MTN plays a critical role in connecting the visual network to the DMN and hippocampus. Here, using data-driven analyses of resting-state functional magnetic resonance imaging (fMRI) data, we identified the networks that interact with the hippocampus-the default mode network (DMN) and a “medial temporal network” (MTN) that included regions in the medial temporal lobe (MTL) and precuneus. Episodic memory depends on interactions between the hippocampus and interconnected neocortical regions.
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