Abstract

We modeled shared representational spaces in macaque brains using fMRI data from 12 rhesus monkeys obtained during movie-viewing and response hyperalignment (RHA). RHA greatly improved inter-subject correlation of movie response time-series in occipital, temporal, and prefrontal cortices and afforded highly accurate between-subject decoding of movie time-points and estimation of idiosyncratic functional topographies. These results reveal shared high-dimensional, high capacity representational spaces encoded in idiosyncratic fine- and coarse-grained functional topographies.