Reduction of stimulus visibility compresses apparent time intervals
The neural mechanisms underlying visual estimation of subsecond durations remain unknown, but perisaccadic underestimation of interflash intervals may provide a clue as to the nature of these mechanisms. Here we found that simply reducing the flash visibility, particularly the visibility of transient signals, induced similar time underestimation by human observers. Our results suggest that weak transient responses fail to trigger the proper detection of temporal asynchrony, leading to increased perception of simultaneity and apparent time compression.
In a sharp turnaround, the Republican candidates has opened a 5-point lead on his Democratic rival and is seen as a stronger manager of the economy, according to a Reuters/Zogby poll.
AFP - Georgia's South Ossetia and Abkhazia regions planned rallies Thursday to ask Russia for recognition as independent states, two weeks after Russian troops occupied both provinces.
