Figure 5.

Estimating the spatial resolution of shared representations in the common model space. (a) Effect of spatial smoothing of fMRI data on accuracies of bsMVPC of 15 s movie time segments in 20 selected searchlight ROIs (same as those used in Figs 2–4, Supplementary Table 1). Smoothing filters had a FWHM of 0 mm, 4 mm, 8 mm, and 12 mm. See Supplementary Figure 7 for brain maps of the effect of smoothing. (b) The slope of ISCs of time series by cortical distance in 20 searchlight ROIs after hyperalignment and anatomical alignment (left). The ROI mean correlations between time series for voxels in the same locations and for voxels at different distances from each other are shown on the right. ISC of time series for anatomically aligned data were calculated on data that were controlled for the effect of filtering (see Supplementary Fig. 1).