Age mediation of frontoparietal activation during visual feature search

David J. Madden, Emily L. Parks, Simon W. Davis, Michele T. Diaz, Guy G. Potter, Ying hui Chou, Nan kuei Chen, Roberto Cabeza

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

Activation of frontal and parietal brain regions is associated with attentional control during visual search. We used fMRI to characterize age-related differences in frontoparietal activation in a highly efficient feature search task, detection of a shape singleton. On half of the trials, a salient distractor (a color singleton) was present in the display. The hypothesis was that frontoparietal activation mediated the relation between age and attentional capture by the salient distractor. Participants were healthy, community-dwelling individuals, 21 younger adults (19-29. years of age) and 21 older adults (60-87. years of age). Top-down attention, in the form of target predictability, was associated with an improvement in search performance that was comparable for younger and older adults. The increase in search reaction time (RT) associated with the salient distractor (attentional capture), standardized to correct for generalized age-related slowing, was greater for older adults than for younger adults. On trials with a color singleton distractor, search RT increased as a function of increasing activation in frontal regions, for both age groups combined, suggesting increased task difficulty. Mediational analyses disconfirmed the hypothesized model, in which frontal activation mediated the age-related increase in attentional capture, but supported an alternative model in which age was a mediator of the relation between frontal activation and capture.

Original languageEnglish (US)
Pages (from-to)262-274
Number of pages13
JournalNeuroImage
Volume102
Issue numberP2
DOIs
StatePublished - Nov 15 2014

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All Science Journal Classification (ASJC) codes

  • Neurology
  • Cognitive Neuroscience

Cite this

Madden, D. J., Parks, E. L., Davis, S. W., Diaz, M. T., Potter, G. G., Chou, Y. H., ... Cabeza, R. (2014). Age mediation of frontoparietal activation during visual feature search. NeuroImage, 102(P2), 262-274. https://doi.org/10.1016/j.neuroimage.2014.07.053
Madden, David J. ; Parks, Emily L. ; Davis, Simon W. ; Diaz, Michele T. ; Potter, Guy G. ; Chou, Ying hui ; Chen, Nan kuei ; Cabeza, Roberto. / Age mediation of frontoparietal activation during visual feature search. In: NeuroImage. 2014 ; Vol. 102, No. P2. pp. 262-274.
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Madden, DJ, Parks, EL, Davis, SW, Diaz, MT, Potter, GG, Chou, YH, Chen, NK & Cabeza, R 2014, 'Age mediation of frontoparietal activation during visual feature search', NeuroImage, vol. 102, no. P2, pp. 262-274. https://doi.org/10.1016/j.neuroimage.2014.07.053

Age mediation of frontoparietal activation during visual feature search. / Madden, David J.; Parks, Emily L.; Davis, Simon W.; Diaz, Michele T.; Potter, Guy G.; Chou, Ying hui; Chen, Nan kuei; Cabeza, Roberto.

In: NeuroImage, Vol. 102, No. P2, 15.11.2014, p. 262-274.

Research output: Contribution to journalArticle

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