Attention makes moving objects be perceived to move faster.
Although it is well established that attention affects visual performance in many ways, by using a novel paradigm [Carrasco, M., Ling, S., & Read. S. (2004). Attention alters appearance. Nature Neuroscience, 7, 308-313.] it has recently been shown that attention can alter the perception of different properties of stationary stimuli (e.g., contrast, spatial frequency, gap size). However, it is not clear whether attention can also change the phenomenological appearance of moving stimuli, as to date psychophysical and neuro-imaging studies have specifically shown that attention affects the adaptability of the visual motion system. Here, in five experiments we demonstrated that attention effectively alters the perceived speed of moving stimuli, so that attended stimuli were judged as moving faster than less attended stimuli. However, our results suggest that this change in visual performance was not accompanied by a corresponding change in the phenomenological appearance of the speed of the moving stimulus.
Turatto
Massimo
M
Department of Cognitive Sciences and Education, Rovereto, Italy. massimo.turatto@unitn.it
Vescovi
Massimo
M
Valsecchi
Matteo
M
D000704:Analysis of Variance; D001288:Attention; D003463:Cues; D005403:Fixation, Ocular; D006801:Humans; D009039:Motion Perception / Q000502:physiology*; D009903:Optical Illusions; D010775:Photic Stimulation; D011601:Psychophysics