Abstract Representations of Object-Directed Action in the Left Inferior Parietal Lobule.

摘要: Prior neuroimaging and neuropsychological research indicates that the left inferior parietal lobule in human brain is a critical substrate for representing object manipulation knowledge. In present functional MRI study we used multivoxel pattern analyses to test whether action similarity among objects can be decoded independent of task applied (identification or pantomime) stimulus format which stimuli are presented (pictures printed words). Participants pantomimed use objects, cued by words, identified pictures objects. Classifiers were trained tested across (e.g., training data: pantomime; testing identification), word format; format: picture) specific scissors vs. corkscrew; pliers screwdriver). The only region relations could task, was lobule. By contrast, medial aspects ventral surface temporal lobe represented function, albeit not at same level abstractness as actions These results suggest compulsory access abstract information even when simply identifying