Secondly, ATD increased the BOLD response in the left precuneus (BA 31) and cuneus (BA 18) during congruent color words.
Firstly, ATD increased the BOLD response in the anterior cingulate cortex (ACC) (BA 32) when incongruent color words were compared with congruent color words in the first Stroop block the participants performed.
The researchers presented C with numerals in either a congruent color--for her, the number 7 looks yellow--or an incongruent color, such as a blue 7. When the numbers and colors matched, she named the colors in two-thirds the time it took to name mismatched colors.
The fourth condition, Inhibition/switching, has similar non-congruent color words, and requires the respondents to switch between reading and color naming.
However, demonstrating that the speeding of responses to ink color-congruent color words in comparison to neutral stimuli was equivalent between the groups, no interaction of trial type and group was found (F 1, 42) =.74; n.s).s
The RTs for the center 2-color and 4-color conditions, and the lateral congruent 2-color and 4-color conditions were also examined with Mann-Whitney tests.
Concerning RTs, bilinguals were faster than monolinguals in two conditions, the center 4-color and the lateral congruent 2-color conditions.
In the congruent condition, color words were presented in a semantically analog color.
Significant statistical differences were found in the center 4-color condition, favoring bilinguals (Z = -2.07, p = .04), and in the lateral congruent 2-color condition, also favoring bilinguals (Z = -2.58, p = .01).01
