Post-hoc comparisons of ALFF between each pair of three groups. Between-group differences of ALFF in (A) classic frequency band, (B) slow-4 frequency band, and (C) slow-5 frequency band. The regions on the left of dashed line showing PSD-specific alterations of ALFF. *p < 0.05, **p < 0.01, ***p < 0.001 Abbreviations: Stroke, stroke patients without depression; PSD, post-stroke depression; HC, healthy controls; IL, ipsilesional hemisphere; CL, contralesional hemisphere; I, inferior; S, superior; MFG, middle frontal gyrus; SFGdor, the dorsolateral part of superior frontal gyrus; INS, insula; SMA, supplementary motor area; MTG, middle temporal gyrus; IFGtriang, the triangular part of inferior frontal gyrus; SOG, superior occipital gyrus; STG, superior temporal gyrus; DCG, median cingulate and paracingulate gyri; SFGmed, the medial part of superior frontal gyrus; HIP, hippocampus; ROL, rolandic operculum; MOG, middle occipital gyrus; PreCG, precental gyrus; SMG, supramarginal gyrus.