FIGURE 2.

Visualization of the anterior cingulate cortex (ACC) voxels under the optimal cluster solution (k = 3) and clustering performance according to the cluster criteria. (a) Similarity matrix of the ACC voxels. (b) Similarity matrix of the ACC voxels reordered by their clustering affiliations. (c) Visualization of ACC voxels according to the three‐cluster solution by multidimensional scaling. Longer distance between points (denote ACC voxels) was associated with less similar impairment profile of these voxels in relation to their functional connectivity with bilateral dorsolateral prefrontal cortices and amygdalae. (d) According to elbow criteria, k = 3 was the most significant inflection point of the curve and was chosen as the optimal cluster number