Deconstructing the default: cortical subdivision of the default mode/intrinsic system during self-related processing.

ABSTRACT: Recent brain imaging research has highlighted a new global system of areas termed the Default Mode network (DM), which appears to specialize in intrinsically oriented functions. However, it is still unresolved to what extent this system contains functional subsystems as in the better known sensory and motor cortices. Here, we report that functional subdivisions can be revealed within individual nodes of the DM, such as the Inferior Parietal Lobule (IPL), through the use of different categories of self-oriented tasks. Subjects underwent BOLD fMRI scans during which they were asked to recall self-related positive and negative information in the categories of people and food. These tasks elicited distinct regions of activation within the DM. Importantly, the observed activations were above th

SUBMITTER: Salomon R 

PROVIDER: S-EPMC6869590 | biostudies-literature | 2014 Apr

REPOSITORIES: biostudies-literature