| |
Abstract:
A recent theoretical account delineated the role of the
Anterior Cingulate Cortex (ACC) as the detection of conflict
between competing information streams. Using functional Magnetic
Resonance Imaging (fMRI), we examined the activity of this brain
structure during different forms and degrees of conflict between
the word and color dimensions of Stroop stimuli. Overall, our
results showed a dissociation between the degree of conflict and
ACC activation. More specifically, although ACC activation was very
extensive when print color interfered with word reading
performance, the level of conflict, as measured by reaction time
(RT) costs, was only moderate compared to other conditions. These
results suggests that, rather than restricting the role of the ACC
to detection of conflict, it should be extended to include other
cognitive constructs, such as resolution of prior
inhibition.
|
