Perceived timing of new objects and feature changes.
Recent psychophysical studies have shown that perceived timings of events can be dissociated from their physical temporal relationship. In the flash-lag effect (FLE), a flash presented at the same spatiotemporal position as a continuously moving stimulus is perceived to lag behind the moving stimulus. In the present study, we report a peculiar condition in which FLE does not occur even when the position of a moving object is estimated at the moment of a transient event. In a series of experiments, we compared perceived timings and processing delays for appearance of a new object against feature changes of an existing object. We found that perceived timing of the appearance of a new object is delayed compared to the perception of feature changes updating the properties of an object. Our results suggest the construction of a new object representation requires additional time to establish a stable neuronal representation.
Kanai
Ryota
R
Institute of Cognitive Neuroscience & Dept of Psychology, University College London, London, UK. r.kanai@ucl.ac.uk
Carlson
Thomas A
TA
Verstraten
Frans A J
FA
Walsh
Vincent
V
D006801:Humans; D007600:Judgment; D009039:Motion Perception / Q000502:physiology*; D010775:Photic Stimulation / Q000379:methods; D011601:Psychophysics; D011930:Reaction Time; D013028:Space Perception / Q000502:physiology; D013998:Time Perception / Q000502:physiology*; D014796:Visual Perception / Q000502:physiology*