I would like to clarify on some details regarding my question. For the example I gave, let's assume that each voxel in the positive cluster has a T value of 3, so that every voxel survived the thresholding. Similarly, let's assume that each voxel in the negative cluster has a T value of -3, so that every voxel also survived the thresholding. Then the question is what I put in the last message, that is, would the clusterizing command disregard the direction of activation or not. Thank you so much!
Marina