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Wenyuan Yu, Ye Liu, Xiaolan Fu; The time course of structure-based and function-based action representation activation during object recognition. Journal of Vision 2016;16(12):174. doi: 10.1167/16.12.174.
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© 2017 Association for Research in Vision and Ophthalmology.
Previous research has proved that the action representation influences object recognition before the completion of object recognition, that is, within the first 150 millisecond (Kiefer, Sim, Helbig, & Graf, 2011). There are at least two kinds of action representation, structure-based and function-based action representation, depending on different neural streams (Rizzolatti & Matelli ,2003). Therefore, an ERP experiment was conducted to explore whether these two action representations can both influence object recognition before the completion of object recognition. With a priming paradigm, a hand posture picture and a manipulable object were presented sequentially and participants were asked to name the object when a question mark was presented, during which ERPs were measured to examine brain activation. The results showed that there was a function-based action priming effect over the central scalp as early as 70 millisecond after the onset of target objects, that is, the mean amplitude with congruent function-based action pictures was significant larger than that with incongruent function-based action pictures in central scalp. Whereas, the difference between congruent and incongruent trials was not significant in structure-based action priming condition. The mean amplitude of N1 in the function-based action priming condition over the parietal scalp in the early stage of object recognition was significant larger than that in the structure-based action priming condition. These results indicate that function-based action representation is activated in the early recognition stage, and functions before the completion of object recognition, while the structure-based action representation cannot. The findings suggest that the activation time of these two action representation are different and that function-based action representation is perhaps more important to object recognition. The present study provides further evidence for the distinction between two action systems: "Grasp" and "Use" system.
Meeting abstract presented at VSS 2016
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