PMID- 21111832 OWN - NLM STAT- MEDLINE DCOM- 20110513 LR - 20110131 IS - 1095-9572 (Electronic) IS - 1053-8119 (Linking) VI - 55 IP - 1 DP - 2011 Mar 1 TI - Associations and dissociations between default and self-reference networks in the human brain. PG - 225-32 LID - 10.1016/j.neuroimage.2010.11.048 [doi] AB - Neuroimaging has revealed consistent activations in medial prefrontal cortex (MPFC) and posterior cingulate cortex (PCC) extending to precuneus both during explicit self-reference tasks and during rest, a period during which some form of self-reference is assumed to occur in the default mode of brain function. The similarity between these two patterns of midline cortical activation may reflect a common neural system for explicit and default-mode self-reference, but there is little direct evidence about the similarities and differences between the neural systems that mediate explicit self-reference versus default-mode self-reference during rest. In two experiments, we compared directly the brain regions activated by explicit self-reference during judgments about trait adjectives and by rest conditions relative to a semantic task without self-reference. Explicit self-reference preferentially engaged dorsal MPFC, rest preferentially engaged precuneus, and both self-reference and rest commonly engaged ventral MPFC and PCC. These findings indicate that there are both associations (shared components) and dissociations between the neural systems underlying explicit self-reference and the default mode of brain function. CI - Copyright (c) 2010 Elsevier Inc. All rights reserved. FAU - Whitfield-Gabrieli, Susan AU - Whitfield-Gabrieli S AD - Massachusetts Institute of Technology, Department of Brain and Cognitive Sciences, Harvard-MIT Division of Health Sciences and Technology, and Poitras Center for Affective Disorders Research, Cambridge, MA 02139, USA swg@mit.edu FAU - Moran, Joseph M AU - Moran JM FAU - Nieto-Castanon, Alfonso AU - Nieto-Castanon A FAU - Triantafyllou, Christina AU - Triantafyllou C FAU - Saxe, Rebecca AU - Saxe R FAU - Gabrieli, John D E AU - Gabrieli JD LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20101125 PL - United States TA - Neuroimage JT - NeuroImage JID - 9215515 SB - IM MH - Adult MH - Brain/*physiology MH - Cognition/*physiology MH - *Ego MH - Humans MH - *Magnetic Resonance Imaging MH - Nerve Net/*physiology MH - *Self Concept EDAT- 2010/11/30 06:00 MHDA- 2011/05/14 06:00 CRDT- 2010/11/30 06:00 PHST- 2010/08/02 00:00 [received] PHST- 2010/11/11 00:00 [revised] PHST- 2010/11/12 00:00 [accepted] PHST- 2010/11/30 06:00 [entrez] PHST- 2010/11/30 06:00 [pubmed] PHST- 2011/05/14 06:00 [medline] AID - S1053-8119(10)01526-0 [pii] AID - 10.1016/j.neuroimage.2010.11.048 [doi] PST - ppublish SO - Neuroimage. 2011 Mar 1;55(1):225-32. doi: 10.1016/j.neuroimage.2010.11.048. Epub 2010 Nov 25.