Abstract
Original language | English |
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Pages (from-to) | 1-5 |
Number of pages | 5 |
Journal | Journal of Eye Movement Research |
Volume | 1 |
Issue number | 1 |
Publication status | Published - 3 Sep 2007 |
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Keywords
- eye movements
- receptive fieds
- saccadic compression
- decision uncertainty
Cite this
Squeezing the uncertainty from saccadic compression. / Chapman, Craig; Hunt, Amelia; Kingstone, Alan.
In: Journal of Eye Movement Research, Vol. 1, No. 1, 03.09.2007, p. 1-5.Research output: Contribution to journal › Article
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TY - JOUR
T1 - Squeezing the uncertainty from saccadic compression
AU - Chapman, Craig
AU - Hunt, Amelia
AU - Kingstone, Alan
PY - 2007/9/3
Y1 - 2007/9/3
N2 - Brief visual stimuli presented before and during a saccade are often mislocalized due to spatial compression. This saccadic compression effect is thought to have a perceptual basis, and results in visual objects being squeezed together and their number underestimated. Here we show that observers are also uncertain about their visual experiences just before and during a saccade. It is known that responses tend to be biased away from extreme values under conditions of uncertainty. Thus, a plausible alternative explanation of compression is that it reflects the uncertainty-bias to underestimate the number of items that were presented. We test this hypothesis and find that saccadic compression is independent of certainty, and is significantly modulated by orientation, with larger effects for stimuli oriented horizontally, in the direction of the saccade. These findings confirm that saccadic compression is a perceptual phenomenon that may enable seamless perceptual continuity across saccades.
AB - Brief visual stimuli presented before and during a saccade are often mislocalized due to spatial compression. This saccadic compression effect is thought to have a perceptual basis, and results in visual objects being squeezed together and their number underestimated. Here we show that observers are also uncertain about their visual experiences just before and during a saccade. It is known that responses tend to be biased away from extreme values under conditions of uncertainty. Thus, a plausible alternative explanation of compression is that it reflects the uncertainty-bias to underestimate the number of items that were presented. We test this hypothesis and find that saccadic compression is independent of certainty, and is significantly modulated by orientation, with larger effects for stimuli oriented horizontally, in the direction of the saccade. These findings confirm that saccadic compression is a perceptual phenomenon that may enable seamless perceptual continuity across saccades.
KW - eye movements
KW - receptive fieds
KW - saccadic compression
KW - decision uncertainty
M3 - Article
VL - 1
SP - 1
EP - 5
JO - Journal of Eye Movement Research
JF - Journal of Eye Movement Research
SN - 1995-8692
IS - 1
ER -