Temporal Illusions in Peripheral Vision: The Effect of Eccentricity on Subjective Duration varies with the investigated Duration Range
Mon-Main hall - Z3-Poster 1-2805
Presented by: Alina Krug
Research has shown that the perceived duration of short stimuli in the visual periphery decreases as eccentricity increases. However, conflicting results have been found by studies using other methods to investigate subjective duration or longer durations. The aim of this study is to investigate how stimulus eccentricity affects perceived duration across different duration ranges. Using the temporal bisection task and carefully controlling for fixation, participants categorized the duration of stimuli presented at 3° or 9° eccentricity as short or long in three separate experiments. Experiment 1 examined short durations ranging from 20-220 ms, Experiment 2 examined long durations from 400-1600 ms, and Experiment 3 examined intermediate durations ranging from 160-660 ms. We replicated the decrease in perceived duration for stimuli presented at larger eccentricities for the short durations investigated in Experiment 1. Interestingly, the effect reversed for the long durations of Experiment 2. But, there was no significant difference between eccentricities for the intermediate durations of Experiment 3. We discuss the results with regard to possible differences in attentional mechanisms determining the processing of short and long durations.
Keywords: Duration estimation, Time perception, Temporal bisection task, Visual periphery, Eccentricity