Functional Correspondences in the Human and Marmoset Visual Cortex During Movie Watching: Insights from Correlation, Redundancy, and Synergy
The world of beauty is deeply connected to the visual cortex, as perception often begins with vision in both humans and marmosets. Quantifying functional correspondences in the visual cortex across species can help us understand how information is processed in the primate visual cortex, while also providing deeper insights into human visual cortex functions through the study of marmosets. In this study, we measured pairwise and beyond pairwise correlation, redundancy, and synergy in movie-driven fMRI data across species. Our first key finding was that humans and marmosets exhibited significant overlaps in functional synergy. Second, we observed that the strongest functional correspondences between the human peri-entorhinal and entorhinal cortex (PeEc) and the occipitotemporal higher-level visual regions in the marmoset during movie watching reflected a functional synergistic relationship. These regions are known to correspond to face-selective areas in both species. Third, redundancy measures maintained stable high-order hubs, indicating a steady core of shared information processing, while synergy measures revealed a dynamic shift from low- to high-level visual regions as interaction increased, reflecting adaptive integration. This highlights distinct patterns of information processing across the visual hierarchy. Ultimately, our results reveal the marmoset as a compelling model for investigating visual perception, distinguished by its remarkable functional parallels to the human visual cortex.
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