Local Motion Is Sufficient for Human Body Movement Perception in High-Level Visual Cortex
Li, B.; Vogels, R.; Marrazzo, G.; Poyo Solanas, M.; de Gelder, B.
Show abstract
Perceiving the movements of other living organisms is a fundamental ability across species. Although several cortical regions are selective for static body features, it is unclear whether these areas also encode motion cues independently of body shapes. Here, we isolated local motion signals from naturalistic body movements using synthesized videos that eliminate explicit body shape information. We demonstrate that local motion alone is sufficient for perceiving human body movement. Using ultra-high field fMRI, we found that three body-motion-related areas, fusiform gyrus (FG), lateral occipitotemporal cortex (LOTC), and posterior superior temporal sulcus (pSTS), were sensitive to both the amount and the spatiotemporal structure of local motion. Critically, the local motion effects were significantly correlated to voxel-wise body motion selectivity in FG and LOTC, but not in pSTS. These findings identify local motion as a distinct and behaviorally sufficient cue for body perception, which can be encoded in FG and LOTC in parallel with body shape processing.
Matching journals
The top 4 journals account for 50% of the predicted probability mass.
Similar papers in this journal
- Gaze patterns and brain activations in humans and marmosets in the Frith-Happe; theory-of-mind animation task 97%
- Attention Modulates Human Visual Responses to Objects by Tuning Sharpening 96%
- Categorical representation from sound and sight in the ventral occipito-temporal cortex of sighted and blind 96%
Similar papers in this journal
"Similar papers" are the closest papers from that journal in the model's embedding space. They show what the match is built on, but the ranking comes mostly from a classifier over the whole training set, not from these examples alone.