caa a22 4500 445351195 CHVBK 20180317142844.0 cr unu---uuuuu 170323e20110401xx s 000 0 eng 10.1007/s00221-011-2598-y doi (NATIONALLICENCE)springer-10.1007/s00221-011-2598-y Time perception of action photographs is more precise than that of still photographs [Elektronische Daten] [Alessandro Moscatelli, Laura Polito, Francesco Lacquaniti] A photograph of an action contains implicit information about the depicted motion. Previous studies using either psychophysics or neuroimaging suggested that the neural processing of implied-motion images shares some features of real-motion processing. According to the hypothesis that the target depicted in photographs with implied motion is mentally represented as continuing in motion, such kind of photographs should be processed by the brain similarly to the individual frames of a running movie. In order to decode the functional significance of a movie, we must be able to estimate the duration of each frame and the time interval between successive frames as precisely as possible. Therefore, under naturalistic conditions, one would expect that the precision of time duration estimates is higher for action pictures than for still pictures. To test this prediction, we asked human observers to compare the variable duration of test photographs with the reference duration of their scrambled version. We found that, as expected, the duration of photographs with implied motion was discriminated better than the duration of photographs without implied motion. We also found that the average reaction time for the discrimination of photographs with implied motion was longer than that for photographs without implied motion, suggesting that the processing of implied motion involves longer and/or slower neural routes to compute time duration. This longer processing may depend on the engagement of two visual systems in parallel, one for processing form and the other one for processing implied motion. The perceptual decision about time duration would occur after the convergence of signals from these two pathways. Springer-Verlag, 2011 Temporal discrimination nationallicence Visual motion nationallicence Area hMT/V5+ nationallicence Moscatelli Alessandro Laboratory of Neuromotor Physiology, Santa Lucia Foundation, Via Ardeatina 306, 00179, Rome, Italy aut Polito Laura Laboratory of Neuromotor Physiology, Santa Lucia Foundation, Via Ardeatina 306, 00179, Rome, Italy aut Lacquaniti Francesco Laboratory of Neuromotor Physiology, Santa Lucia Foundation, Via Ardeatina 306, 00179, Rome, Italy aut Experimental Brain Research Springer-Verlag 210/1(2011-04-01), 25-32 0014-4819 210:1<25 2011 210 221 https://doi.org/10.1007/s00221-011-2598-y text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s00221-011-2598-y text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Moscatelli Alessandro Laboratory of Neuromotor Physiology, Santa Lucia Foundation, Via Ardeatina 306, 00179, Rome, Italy aut NATIONALLICENCE 700 1- Polito Laura Laboratory of Neuromotor Physiology, Santa Lucia Foundation, Via Ardeatina 306, 00179, Rome, Italy aut NATIONALLICENCE 700 1- Lacquaniti Francesco Laboratory of Neuromotor Physiology, Santa Lucia Foundation, Via Ardeatina 306, 00179, Rome, Italy aut NATIONALLICENCE 773 0- Experimental Brain Research Springer-Verlag 210/1(2011-04-01), 25-32 0014-4819 210:1<25 2011 210 221 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer