1. Repeat for each group: FsFastGroupSurfaceRandomEffectsAnalysis
      • func2sph-sess -analysis <analysis> -projfrac <projfrac> -sf <sessid> -df sesspar

        <projfrac>=.3 is typical

      • sphsmooth-sess -analysis <analysis> -sf <sessid> -df sesspar -smoothsteps <XX> -outsphdir sphsm<XX>

      • paint-sess -analysis <analysis> -contrast <1v2> -subject <subject> -space sph -spacedir sphsm<XX> -isxavg <random|fixed> -s <subject> -df sesspar

    • intergroupavg-sess -analysis <analysis> -contrast <1v2> -group1 <group1> -group2 <group2> -intergroup <group1vgroup2> -space sph -spacedir sphsm<XX>