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

Autoři: Charlotte Murphy aff001;  Giulia Poerio aff002;  Mladen Sormaz aff001;  Hao-Ting Wang aff001;  Deniz Vatansever aff001;  Micah Allen aff003;  Daniel S. Margulies aff004;  Elizabeth Jefferies aff001;  Jonathan Smallwood aff001
Působiště autorů: Department of Psychology, University of York, York England, United Kingdom aff001;  Department of Psychology, The University of Sheffield, Sheffield, England, United Kingdom aff002;  Cambridge Psychiatry, Cambridge University, Cambridge, United Kingdom aff003;  FRONTLAB, ICM—Hôpital Pitié Salpêtrière, Paris, France aff004
Vyšlo v časopise: PLoS ONE 14(11)
Kategorie: Research Article
doi: 10.1371/journal.pone.0216182


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.

Klíčová slova:

Cingulate cortex – Cognition – Functional magnetic resonance imaging – Magnetic resonance imaging – Memory – Neuroimaging – principal component analysis – Occipital lobe


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2019 Číslo 11