Details

Autor(en) / Beteiligte

• Marrazzo, Giuseppe
• De Martino, Federico
• Lage-Castellanos, Agustin
• Vaessen, Maarten J.
• de Gelder, Beatrice

Titel

Voxelwise encoding models of body stimuli reveal a representational gradient from low-level visual features to postural features in occipitotemporal cortex

Ist Teil von

• NeuroImage (Orlando, Fla.), 2023-08, Vol.277, p.120240-120240, Article 120240

Ort / Verlag

United States: Elsevier Inc

Erscheinungsjahr

2023

Quelle

MEDLINE

Beschreibungen/Notizen

• •Bodies are encoded in occipitotemporal cortex following a gradient from low-level to postural features.•EBA encodes features pertaining specifically to posture.•Body representation in EBA appears to be viewpoint dependant posteriorly (pITG/pLOS) whereas greater viewpoint tolerance arises anteriorly (aITG/aLOS). Previous research on body representation in the brain has focused on category-specific representation, using fMRI to investigate the response pattern to body stimuli in occipitotemporal cortex. But the central question of the specific computations involved in body selective regions has not been addressed so far. This study used ultra-high field fMRI and banded ridge regression to investigate the computational mechanisms of coding body images, by comparing the performance of three encoding models in predicting brain activity in occipitotemporal cortex and specifically in the extrastriate body area (EBA). Our results indicate that bodies are encoded in occipitotemporal cortex and in the EBA according to a combination of low-level visual features and postural features.