The origins of insight in resting-state brain activity

Neuropsychologia. 2008 Jan 15;46(1):281-91. doi: 10.1016/j.neuropsychologia.2007.07.013. Epub 2007 Jul 27.

Abstract

People can solve problems in more than one way. Two general strategies involve (A) methodical, conscious, search of problem-state transformations, and (B) sudden insight, with abrupt emergence of the solution into consciousness. This study elucidated the influence of initial resting brain-state on subjects' subsequent strategy choices. High-density electroencephalograms (EEGs) were recorded from subjects at rest who were subsequently directed to solve a series of anagrams. Subjects were divided into two groups based on the proportion of anagram solutions derived with self-reported insight versus search. Reaction time and accuracy results were consistent with different cognitive problem-solving strategies used for solving anagrams with versus without insight. Spectral analyses yielded group differences in resting-state EEG supporting hypotheses concerning insight-related attentional diffusion and right-lateralized hemispheric asymmetry. These results reveal a relationship between resting-state brain activity and problem-solving strategy, and, more generally, a dependence of event-related neural computations on the preceding resting state.

Publication types

  • Research Support, N.I.H., Extramural

MeSH terms

  • Adolescent
  • Adult
  • Analysis of Variance
  • Brain / physiology*
  • Brain Mapping*
  • Electroencephalography / methods
  • Female
  • Humans
  • Individuality
  • Male
  • Mental Processes
  • Pattern Recognition, Visual / physiology
  • Photic Stimulation / methods
  • Rest / physiology*