AICHA (Atlas of Intrinsic Connectivity of Homotopic Areas) a functional brain ROIs atlas based on resting-state fMRI data acquired in 281 individuals. AICHA ROIs cover the whole cerebrum, each having 1- homogeneity of its constituting voxels intrinsic activity, and 2- a unique homotopic contralateral counterpart with which it has maximal intrinsic connectivity.
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AICHA version1 (Dec 2015) for SPM12 : aicha_v1.zip
AICHA version2 (Jun 2021) for SPM12 : aicha_v2.tar.zip
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Original reference
AICHA : An atlas of intrinsic connectivity of homotopic areas. Joliot M, Jobard G, Naveau M, Delcroix N, Petit L, Zago L, Crivello F, Mellet E, Mazoyer B & Tzourio-Mazoyer N (2015) . Journal of Neuroscience Methods 10.1016/j.jneumeth.2015.07.013.
http://dx.doi.org/10.1016/j.jneumeth.2015.07.013