Study On Eye Movement Of Biological Motion Perception

Biological motion means organisms move in space, such as walking and running.Biological motion perception achieves interaction between individual and the society.Recognizing the characteristics of biological motion signals helps organisms run awayfrom danger (e.g., predator and prey) and gain or close to the target when hunting orseeking a mate. Many vertebrates, including humans, have a visual system that processesbiological motion actively. Biological motion walking direction can induce robust reflexiveattentional orienting. Interestingly, the effect disappeared when the walker was shownupside-down. By means of study on eye movement, this study explored whether thisphenomenon resulted from whole configuration information or local motion. InExperiment1, the aim was to explore the key factor of inversion effect of biologicalmotion’s reflexive attentional orienting by comparing the inversion of feet and theinversion of all but feet. Experiment2explored the relative importance of wholeconfiguration and local motion of biological motion by presenting stationary point-lightdisplays and the dots representing the feet. According to the definition of automaticprocessing, load-insensitivity criterion, Experiment3explored whether the increasing ofcognitive load had an impact on the processing of biological motion and whetherbiological motion could be processed automatically.The results of experiments found that, firstly, biological motion walking directioncould induce robust reflexive attentional orienting. The effect remained when all but feetwere shown upside-down and the effect disappeared when the dots representing the feetwere shown upside-down. Secondly, moving feet only display could reduce reflexiveattentional orienting, but stationary point-light displays couldn’t. Thirdly, both theprocessing of intact point-light displays and feet only display didn’t influence by thechange of cognitive load. Not only under low load but also under high load, both of themcould reduce robust reflexive attentional orienting.