Fig. 4

Group comparison (recAN > controls) of the brain BOLD signals during the comparison task. a The cluster rendered on the sagittal brain section shows the group effect (recAN > controls) in the comparison task on BOLD signals in the left visual cortex (left superior occipital gyrus). Maximum peak of the effect at the MNI coordinates: x = − 6, y = − 106, z = 4 mm; cluster size: k = 362 voxels; peak T score = 5.07, height level: p = 1.6 × 10^− 6 (uncorrected), cluster level: p = 0.033; FDR corrected for multiple comparisons. The analyses were on a whole brain exploratory voxel-by-voxel basis. The left color bar indicates the T value of the rendered cluster. b The bar graph shows the parametric estimates of the BOLD signals in the left SOG cluster in each group (recAN and controls) for each stimulus type (underweight, healthy weight, and overweight). Post hoc t-tests showed significantly greater BOLD signals in patients with recAN than in controls, regardless of the stimulus types. Error bars indicate standard error. * p < 0.05, ** p < 0.01 (Bonferroni-corrected). MNI: Montreal Neurological Institute; BOLD: blood oxygen level dependent; FDR: false discovery rate; SOG, superior occipital gyrus; recAN: recovered anorexia nervosa