Body and Object Effectors: The Organization of Object Representations in High-Level Visual Cortex Reflects Body–Object Interactions

摘要: The principles driving the functional organization of object representations in high-level visual cortex are not yet fully understood. In four human fMRI experiments, we provide evidence that partly reflects degree to which objects typically controlled by body interact with world, thereby extending body9s boundaries. Univariate whole-brain analysis showed an overlap between responses effectors (e.g., hands, feet, and limbs) hammers, combs, tennis rackets) lateral occipitotemporal (LOTC) parietal cortex. Region interest analyses a hand-selective region left LOTC responded selectively relative range noneffector control conditions graspable objects, “act-on” musical instruments). Object ratings strong response was due general action-related properties shared these conditions, such as hand priming, grasping, hand-action centrality. Finally, representational similarity revealed multivoxel patterns predicted were rated being body. Together, results reveal clustering effector representations, indicating how relate