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Core Concept: Resting-state connectivity

The default mode network, shown here in resting-state fMRI scans (Upper), includes the posterior cingulate cortex, hippocampus, and the medial prefrontal cortex. (Lower) Diffusion tensor imaging, an MRI technique that highlights the brain’s white matter, reveals nerve fibers connecting these brain regions (posterior cingulate cortex in red; medial prefrontal cortex in yellow; hippocampus in green and pink). Adapted from ref. 5, with permission from Oxford University Press.