Fig. 4From: A functional magnetic resonance imaging investigation of visual hallucinations in the human striate cortexClustering of voxel activation information for HCC, HCF, RTC and RTX, in BA 17, 18 and 19. K-means clustering is used for cluster formation. The x, y and z—axes are labeled as the average voxel activations in BA 17, 18 and 19 respectivelyBack to article page