Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
6026468 | NeuroImage | 2015 | 10 Pages |
Abstract
Our visual system takes into account the effects of Earth gravity to interpret biological motion (BM), but the neural substrates of this process remain unclear. Here we measured functional magnetic resonance (fMRI) signals while participants viewed intact or scrambled stick-figure animations of walking, running, hopping, and skipping recorded at normal or reduced gravity. We found that regions sensitive to BM configuration in the occipito-temporal cortex (OTC) were more active for reduced than normal gravity but with intact stimuli only. Effective connectivity analysis suggests that predictive coding of gravity effects underlies BM interpretation. This process might be implemented by a family of snapshot neurons involved in action monitoring.
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Authors
Vincenzo Maffei, Iole Indovina, Emiliano Macaluso, Yuri P. Ivanenko, Guy A. Orban, Francesco Lacquaniti,