EEG dynamics of spontaneous stimulus-independent thoughts

Andrey V. Bocharov, Gennady G. Knyazev, Alexander N. Savostyanov, Tatiana N. Astakhova, Sergey S. Tamozhnikov

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)

Abstract

In this study, we aimed to compare the oscillatory dynamics accompanying self-referential and non-self-referential stimulus-independent thoughts. Electroencephalograms were recorded in 30 healthy participants who were asked to press buttons classifying their spontaneous thoughts as self-referential or non-self-referential. EEG data were analyzed using independent component analysis in conjunction with dipole localization. Self-referential thoughts, as compared to non-self-referential thoughts, were accompanied by more pronounced decreases of theta, alpha, and beta spectral power in the anterior hub of the default-mode network, in the left lateral prefrontal, motor/somatosensory, and temporal cortices. These oscillatory dynamics are interpreted as a reflection of autobiographical memory retrieval intrinsic to self-referential thoughts. Abbreviations: BA: Brodmann area; BOLD: blood oxygenation level-dependent; DMN: default mode network; EEG: electroencephalogram; ERSP: event-related spectral perturbations; fMRI: functional magnetic resonance imaging; PCC: posterior cingulate cortex; PET: positron emission tomography; PFC: prefrontal cortex; SIT: stimulus-independent thought; WM: working memory.

Original languageEnglish
Pages (from-to)77-87
Number of pages11
JournalCognitive Neuroscience
Volume10
Issue number2
DOIs
Publication statusPublished - 3 Apr 2019

Keywords

  • default mode network
  • EEG
  • mind wandering
  • self-referential thoughts
  • stimulus-independent thoughts
  • DEFAULT MODE NETWORK
  • ALPHA OSCILLATIONS
  • METAANALYSIS
  • LOAD
  • AUTOBIOGRAPHICAL MEMORY
  • SELF
  • PREFRONTAL CORTEX
  • FRONTAL-THETA
  • BRAIN

Fingerprint Dive into the research topics of 'EEG dynamics of spontaneous stimulus-independent thoughts'. Together they form a unique fingerprint.

Cite this