Discrimination between biological motion with and without social intention: A pilot study using visual scanning in healthy adults

作者：Roche L^*; Hernandez N; Blanc R; Bonnet Brilhault F; Centelles L; Schmitz C; Martineau J

来源：International Journal of Psychophysiology, 2013, 88(1): 47-54.

DOI：10.1016/j.ijpsycho.2013.01.009

• Human biological motion
• Social intention
• Eye movements
• Visual-spatial attention

Human beings have a detailed understanding of others%26apos; action and body language allowing them to adapt their behaviour for effective social interaction. A proper selection of human motion deserving a social intention over the many human motion surrounding them may be executed by overt visual-spatial attention. The aim of this study was to characterize eye movements in 32 healthy adults while exploring Social and Non-social human biological motion using an eye tracking method according to two paradigms. The %26quot;preferential looking paradigm%26quot; revealed that the first fixation is more often on the Non-social Motion than Social Motion but the first fixations duration are longer on Social Motion. Moreover, with the same paradigm, subjects spent a greater looking time percentage on Social Motion than Non-social Motion, no matter whether discrimination between categories was asked for or not. In the %26quot;blocks paradigm%26quot; the looking time percentage varied by the body parts (chests, pelvis and legs) and its distribution was different between categories. Eye movements revealed a spontaneous, fast and durable bias of overt visual-spatial attention favouring the perception of Social Motion and a different visual scanpath for Social compared to Non-social human biological motion. These findings constitute a basis for the investigation of a %26apos;social intention%26apos; bias in perception of human biological motion.

• 出版日期2013-4