(a) 728 activation coordinates which were included in the analysis, projected onto three orthogonal single coronal, sagittal, and axial slices. (b) Three example slices showing activation coordinates projected onto an individual brain. Slices were chosen to show cortical areas which are frequently reported as significantly activated in the Stroop task (ACC, IFJ, preSMA). Activation coordinates from the same study are plotted in the same color. [Color figure can be viewed in the online issue, which is available at www.interscience.wiley.com.]

Plot of the BIC values of the best three models for up to 30 clusters (left) and enlarged plot of the BIC values for the best three models with cluster numbers between 20 and 25 (right). [Color figure can be viewed in the online issue, which is available at www.interscience.wiley.com.]

Clustering results, on the left for the largest ALE region (left LPFC) and on the right for the second largest ALE region (MFC). Clusters are shown in a sagittal view (top) corresponding to the view in Figure 4 and twice turned around the y axis by a few degrees in order to visualize the shape and separation of the clusters. Colors correspond to the colors in Figure 4. [Color figure can be viewed in the online issue, which is available at www.interscience.wiley.com.]

ALE maps derived from 728 activation coordinates reported for the Stroop paradigm. The ALE map was thresholded at α = 0.01% yielding a maximum ALE value of ALEmax = 0.049. Axial and sagittal slices correspond to the example slices shown in Figure 1b. [Color figure can be viewed in the online issue, which is available at www.interscience.wiley.com.]

Left: Clustering results for the largest ALE region (left LPFC), shown in five consecutive sagittal slices. The clustering yielded five clusters (shown in green, light blue, yellow, red, and blue), dividing the region primarily in anterior-posterior and superior-inferior direction. The most posterior and superior part of the region was further divided in lateral-medial direction. An additional cluster centered around the left insula can be seen in orange at x = −34. These coordinates were not part of the largest ALE region. Right: Results for the second largest ALE region (MFC) shown in four consecutive sagittal slices. Clustering yielded four clusters (blue, green, yellow, red), again dividing the region in anterior-posterior and superior-inferior direction. Note that the single coordinate shown in orange at x = −1 was not part of the second largest ALE region. [Color figure can be viewed in the online issue, which is available at www.interscience.wiley.com.]