Functional brain connectivity and cognition: Effects of adult age and task demands

Ying hui Chou, Nan kuei Chen, David J. Madden

Research output: Contribution to journalArticle

18 Scopus citations

Abstract

Previous neuroimaging research has documented that patterns of intrinsic (resting state) functional connectivity (FC) among brain regions covary with individual measures of cognitive performance. Here, we examined the relation between intrinsic FC and a reaction time (RT) measure of performance, as a function of age group and task demands. We obtained filtered, event-related functional magnetic resonance imaging data, and RT measures of visual search performance, from 21 younger adults (19-29 years old) and 21 healthy, older adults (60-87 years old). Age-related decline occurred in the connectivity strength in multiple brain regions, consistent with previous findings. Among 8 pairs of regions, across somatomotor, orbitofrontal, and subcortical networks, increasing FC was associated with faster responding (lower RT). Relative to younger adults, older adults exhibited a lower strength of this RT-connectivity relation and greater disruption of this relation by a salient but irrelevant display item (color singleton distractor). Age-related differences in the covariation of intrinsic FC and cognitive performance vary as a function of task demands.

Original languageEnglish (US)
Pages (from-to)1925-1934
Number of pages10
JournalNeurobiology of Aging
Volume34
Issue number8
DOIs
StatePublished - Aug 1 2013
Externally publishedYes

Keywords

  • Aging
  • Attention
  • Behavior-based connectivity analysis
  • Brain connectivity
  • Cognition
  • Default mode
  • FMRI
  • Reaction time
  • Resting state
  • Visual search

ASJC Scopus subject areas

  • Neuroscience(all)
  • Aging
  • Clinical Neurology
  • Developmental Biology
  • Geriatrics and Gerontology

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