Subjective Stimulus Duration Depends on Visual Field Location
-
1
National University of Singapore, Psychology and LSI Neurobiology/Aging Programme, Singapore
-
2
Ulm University, General Psychology, Institute of Psychology and Pedagogy, Germany
Kliegl and Huckauf (submitted) asked participants to indicate whether the standard stimulus, presented first and at fixation, or the comparison stimulus, presented second and to the left or right of fixation along the horizontal meridian, was longer in duration. They found that the point of subjective equality increased as eccentricity increased. In other words, stimuli seem shorter when presented in the periphery as compared to on the fovea. Here, we used an eye-tracker to ensure that this horizontal eccentricity effect was not due to saccadic suppression resulting from gaze shifts during stimulus presentation (Exp. 1) and to determine whether the eccentricity effect would also hold along the vertical meridian (Exp. 2).
In Experiment 1, the standard stimulus was 120 ms and presented at fixation whereas the comparison stimuli ranged from 20 to 220 ms and were presented at 3, 6, or 9 degrees from fixation. The horizontal eccentricity effect was present even when trials containing saccades were excluded from the analysis. In Experiment 2, standard duration (i.e., 120, 170, 210 ms) was a between subjects factor and vertical eccentricity (3, 6, 9 degrees) was a within subjects factor. The interaction between stimulus duration and eccentricity was statistically significant. Follow-up analyses revealed that for the 120 ms condition the PSE was significantly larger for each increase in eccentricity, whereas for the 170 ms condition the PSE at 6 degrees and 9 degrees was larger than at 3 degrees, but did not differ between 6 and 9 degrees. For the 210 ms condition there were no statistically significant effects of eccentricity. Taken together, the results indicate that the location of a stimulus along the horizontal and vertical meridians affects its perceived duration. Moreover, the effect is not due to saccadic suppression and may not manifest for durations larger than about 200 ms. These results will be discussed in light of current models of time perception.
Keywords:
Time Perception,
interval timing,
retinal eccentricity,
Time distortion,
milliseconds range
Conference:
XII International Conference on Cognitive Neuroscience (ICON-XII), Brisbane, Queensland, Australia, 27 Jul - 31 Jul, 2014.
Presentation Type:
Poster
Topic:
Sensation and Perception
Citation:
Cheng
X,
Kliegl
K,
Huckauf
A and
Penney
T
(2015). Subjective Stimulus Duration Depends on Visual Field Location.
Conference Abstract:
XII International Conference on Cognitive Neuroscience (ICON-XII).
doi: 10.3389/conf.fnhum.2015.217.00169
Copyright:
The abstracts in this collection have not been subject to any Frontiers peer review or checks, and are not endorsed by Frontiers.
They are made available through the Frontiers publishing platform as a service to conference organizers and presenters.
The copyright in the individual abstracts is owned by the author of each abstract or his/her employer unless otherwise stated.
Each abstract, as well as the collection of abstracts, are published under a Creative Commons CC-BY 4.0 (attribution) licence (https://creativecommons.org/licenses/by/4.0/) and may thus be reproduced, translated, adapted and be the subject of derivative works provided the authors and Frontiers are attributed.
For Frontiers’ terms and conditions please see https://www.frontiersin.org/legal/terms-and-conditions.
Received:
19 Feb 2015;
Published Online:
24 Apr 2015.
*
Correspondence:
Prof. Trevor Penney, National University of Singapore, Psychology and LSI Neurobiology/Aging Programme, Singapore, Singapore, penney@cuhk.edu.hk