caa a22 4500 605542341 CHVBK 20210128100921.0 cr unu---uuuuu 210128e20150701xx s 000 0 eng 10.1007/s10071-015-0860-6 doi (NATIONALLICENCE)springer-10.1007/s10071-015-0860-6 Do rhesus monkeys ( Macaca mulatta ) perceive illusory motion? [Elektronische Daten] [Christian Agrillo, Simone Gori, Michael Beran] During the last decade, visual illusions have been used repeatedly to understand similarities and differences in visual perception of human and non-human animals. However, nearly all studies have focused only on illusions not related to motion perception, and to date, it is unknown whether non-human primates perceive any kind of motion illusion. In the present study, we investigated whether rhesus monkeys (Macaca mulatta) perceived one of the most popular motion illusions in humans, the Rotating Snake illusion (RSI). To this purpose, we set up four experiments. In Experiment 1, subjects initially were trained to discriminate static versus dynamic arrays. Once reaching the learning criterion, they underwent probe trials in which we presented the RSI and a control stimulus identical in overall configuration with the exception that the order of the luminance sequence was changed in a way that no apparent motion is perceived by humans. The overall performance of monkeys indicated that they spontaneously classified RSI as a dynamic array. Subsequently, we tested adult humans in the same task with the aim of directly comparing the performance of human and non-human primates (Experiment 2). In Experiment 3, we found that monkeys can be successfully trained to discriminate between the RSI and a control stimulus. Experiment 4 showed that a simple change in luminance sequence in the two arrays could not explain the performance reported in Experiment 3. These results suggest that some rhesus monkeys display a human-like perception of this motion illusion, raising the possibility that the neurocognitive systems underlying motion perception may be similar between human and non-human primates. Springer-Verlag Berlin Heidelberg, 2015 Motion illusion nationallicence Rotating Snake illusion nationallicence Macaca mulatta nationallicence Comparative perception nationallicence Agrillo Christian Department of General Psychology, University of Padova, Via Venezia 8, 35131, Padova, Italy aut Gori Simone Department of General Psychology, University of Padova, Via Venezia 8, 35131, Padova, Italy aut Beran Michael Psychology Department, Georgia State University, Atlanta, GA, USA aut Animal Cognition Springer Berlin Heidelberg 18/4(2015-07-01), 895-910 1435-9448 18:4<895 2015 18 10071 https://doi.org/10.1007/s10071-015-0860-6 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s10071-015-0860-6 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Agrillo Christian Department of General Psychology, University of Padova, Via Venezia 8, 35131, Padova, Italy aut NATIONALLICENCE 700 1- Gori Simone Department of General Psychology, University of Padova, Via Venezia 8, 35131, Padova, Italy aut NATIONALLICENCE 700 1- Beran Michael Psychology Department, Georgia State University, Atlanta, GA, USA aut NATIONALLICENCE 773 0- Animal Cognition Springer Berlin Heidelberg 18/4(2015-07-01), 895-910 1435-9448 18:4<895 2015 18 10071