Hello, is that me you are looking for? A reexamination of the role of the DMN in social and self relevant aspects of off-task thought

TY - JOUR

T1 - Hello, is that me you are looking for? A reexamination of the role of the DMN in social and self relevant aspects of off-task thought

AU - Murphy, Charlotte

AU - Poerio, Giulia

AU - Sormaz, Mladen

AU - Wang, Hao Ting

AU - Vatansever, Deniz

AU - Allen, Micah

AU - Margulies, Daniel S.

AU - Jefferies, Elizabeth

AU - Smallwood, Jonathan

N1 - © 2019 Murphy et al.

PY - 2019/11/7

Y1 - 2019/11/7

N2 - Neural activity within the default mode network (DMN) is widely assumed to relate to processing during off-task states, however it remains unclear whether this association emerges from a shared role in self or social content that is common in these conditions. In the current study, we examine the possibility that the role of the DMN in ongoing thought emerges from contributions to specific features of off-task experience such as self-relevant or social content. A group of participants described their experiences while performing a laboratory task over a period of days. In a different session, neural activity was measured while participants performed Self/Other judgements (e.g., Does the word ‘Honest’ apply to you (Self condition) or Barack Obama (Other condition)). Despite the prominence of social and personal content in off-task reports, there was no association with neural activity during off-task trait adjective judgements. Instead, during both Self and Other judgements we found recruitment of caudal posterior cingulate cortex—a core DMN hub—was above baseline for individuals whose laboratory experiences were characterised as detailed. These data provide little support for a role of the DMN in self or other content in the off-task state and instead suggest a role in how on-going thought is represented.

AB - Neural activity within the default mode network (DMN) is widely assumed to relate to processing during off-task states, however it remains unclear whether this association emerges from a shared role in self or social content that is common in these conditions. In the current study, we examine the possibility that the role of the DMN in ongoing thought emerges from contributions to specific features of off-task experience such as self-relevant or social content. A group of participants described their experiences while performing a laboratory task over a period of days. In a different session, neural activity was measured while participants performed Self/Other judgements (e.g., Does the word ‘Honest’ apply to you (Self condition) or Barack Obama (Other condition)). Despite the prominence of social and personal content in off-task reports, there was no association with neural activity during off-task trait adjective judgements. Instead, during both Self and Other judgements we found recruitment of caudal posterior cingulate cortex—a core DMN hub—was above baseline for individuals whose laboratory experiences were characterised as detailed. These data provide little support for a role of the DMN in self or other content in the off-task state and instead suggest a role in how on-going thought is represented.

UR - http://www.scopus.com/inward/record.url?scp=85074655273&partnerID=8YFLogxK

U2 - 10.1371/journal.pone.0216182

DO - 10.1371/journal.pone.0216182

M3 - Article

C2 - 31697677

AN - SCOPUS:85074655273

SN - 1932-6203

VL - 14

SP - 1

EP - 19

JO - PLoS ONE

JF - PLoS ONE

IS - 11

M1 - e0216182

ER -