In:
Journal of the International Neuropsychological Society, Cambridge University Press (CUP), Vol. 5, No. 4 ( 1999-05), p. 308-319
Abstract:
Patterns of brain activation associated with covert
performance of the Stroop Color–Word task were studied in young, healthy, adult volunteers using blood oxygen
level dependent (BOLD) functional magnetic resonance imaging (fMRI). Comparisons of the incongruous Stroop condition
were made with both color naming and word reading baselines. Areas of the left and right anterior cingulate, the right
precuneus, and the left pars opercularis displayed larger BOLD signal responses during the incongruous Stroop condition
than during baseline conditions. Activation of BOLD signals in these areas was highly repeatable. In a second experiment,
pupil diameter was used to assess cognitive load in 7 individuals studied during overt and covert performance of both Stroop
and color naming conditions. Cognitive load was similar in overt and covert response conditions. Results from the
BOLD study indicate that brain regions participating in selective visual attention and in the selection of motor
programs involved in speech were activated more by the Stroop task than by the baseline tasks. The neural substrate
involved in the resolution of the perceptual and motor conflicts elicited by the Stroop Color–Word task
does not appear to be a single brain region. Rather, a network of brain regions is implicated, with separate regions
within this system supporting distinct functions. ( JINS ,
1999, 5 , 308–319.)
Type of Medium:
Online Resource
ISSN:
1355-6177
,
1469-7661
DOI:
10.1017/S1355617799544020
Language:
English
Publisher:
Cambridge University Press (CUP)
Publication Date:
1999
detail.hit.zdb_id:
2000018-2
SSG:
5,2
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