Spatial position information accumulates steadily over time

Eckart Zimmermann, M. Concetta Morrone, David C. Burr

Research output: Contribution to journalArticle

34 Citations (Scopus)

Abstract

One of the more enduring mysteries of neuroscience is how the visual system constructs robust maps of the world that remain stable in the face of frequent eye movements. Here we show that encoding the position of objects in external space is a relatively slow process, building up over hundreds of milliseconds. We display targets to which human subjects saccade after a variable preview duration. As they saccade, the target is displaced leftwards or rightwards, and subjects report the displacement direction. When subjects saccade to targets without delay, sensitivity is poor; but if the target is viewed for 300-500 ms before saccading, sensitivity is similar to that during fixation with a strong visual mask to dampen transients. These results suggest that the poor displacement thresholds usually observed in the "saccadic suppression of displacement" paradigm are a result of the fact that the target has had insufficient time to be encoded in memory, and not a result of the action of special mechanisms conferring saccadic stability. Under more natural conditions, trans-saccadic displacement detection is as good as in fixation, when the displacement transients are masked.

Original languageEnglish
Pages (from-to)18396-18401
Number of pages6
JournalJournal of Neuroscience
Volume33
Issue number47
DOIs
Publication statusPublished - 2013

Fingerprint

Saccades
Neurosciences
Eye Movements
Masks

ASJC Scopus subject areas

  • Neuroscience(all)

Cite this

Spatial position information accumulates steadily over time. / Zimmermann, Eckart; Morrone, M. Concetta; Burr, David C.

In: Journal of Neuroscience, Vol. 33, No. 47, 2013, p. 18396-18401.

Research output: Contribution to journalArticle

Zimmermann, Eckart ; Morrone, M. Concetta ; Burr, David C. / Spatial position information accumulates steadily over time. In: Journal of Neuroscience. 2013 ; Vol. 33, No. 47. pp. 18396-18401.
@article{2b751d6deb0341c7ad10b1420ade59f0,
title = "Spatial position information accumulates steadily over time",
abstract = "One of the more enduring mysteries of neuroscience is how the visual system constructs robust maps of the world that remain stable in the face of frequent eye movements. Here we show that encoding the position of objects in external space is a relatively slow process, building up over hundreds of milliseconds. We display targets to which human subjects saccade after a variable preview duration. As they saccade, the target is displaced leftwards or rightwards, and subjects report the displacement direction. When subjects saccade to targets without delay, sensitivity is poor; but if the target is viewed for 300-500 ms before saccading, sensitivity is similar to that during fixation with a strong visual mask to dampen transients. These results suggest that the poor displacement thresholds usually observed in the {"}saccadic suppression of displacement{"} paradigm are a result of the fact that the target has had insufficient time to be encoded in memory, and not a result of the action of special mechanisms conferring saccadic stability. Under more natural conditions, trans-saccadic displacement detection is as good as in fixation, when the displacement transients are masked.",
author = "Eckart Zimmermann and Morrone, {M. Concetta} and Burr, {David C.}",
year = "2013",
doi = "10.1523/JNEUROSCI.1864-13.2013",
language = "English",
volume = "33",
pages = "18396--18401",
journal = "Journal of Neuroscience",
issn = "0270-6474",
publisher = "Society for Neuroscience",
number = "47",

}

TY - JOUR

T1 - Spatial position information accumulates steadily over time

AU - Zimmermann, Eckart

AU - Morrone, M. Concetta

AU - Burr, David C.

PY - 2013

Y1 - 2013

N2 - One of the more enduring mysteries of neuroscience is how the visual system constructs robust maps of the world that remain stable in the face of frequent eye movements. Here we show that encoding the position of objects in external space is a relatively slow process, building up over hundreds of milliseconds. We display targets to which human subjects saccade after a variable preview duration. As they saccade, the target is displaced leftwards or rightwards, and subjects report the displacement direction. When subjects saccade to targets without delay, sensitivity is poor; but if the target is viewed for 300-500 ms before saccading, sensitivity is similar to that during fixation with a strong visual mask to dampen transients. These results suggest that the poor displacement thresholds usually observed in the "saccadic suppression of displacement" paradigm are a result of the fact that the target has had insufficient time to be encoded in memory, and not a result of the action of special mechanisms conferring saccadic stability. Under more natural conditions, trans-saccadic displacement detection is as good as in fixation, when the displacement transients are masked.

AB - One of the more enduring mysteries of neuroscience is how the visual system constructs robust maps of the world that remain stable in the face of frequent eye movements. Here we show that encoding the position of objects in external space is a relatively slow process, building up over hundreds of milliseconds. We display targets to which human subjects saccade after a variable preview duration. As they saccade, the target is displaced leftwards or rightwards, and subjects report the displacement direction. When subjects saccade to targets without delay, sensitivity is poor; but if the target is viewed for 300-500 ms before saccading, sensitivity is similar to that during fixation with a strong visual mask to dampen transients. These results suggest that the poor displacement thresholds usually observed in the "saccadic suppression of displacement" paradigm are a result of the fact that the target has had insufficient time to be encoded in memory, and not a result of the action of special mechanisms conferring saccadic stability. Under more natural conditions, trans-saccadic displacement detection is as good as in fixation, when the displacement transients are masked.

UR - http://www.scopus.com/inward/record.url?scp=84887841409&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84887841409&partnerID=8YFLogxK

U2 - 10.1523/JNEUROSCI.1864-13.2013

DO - 10.1523/JNEUROSCI.1864-13.2013

M3 - Article

C2 - 24259564

AN - SCOPUS:84887841409

VL - 33

SP - 18396

EP - 18401

JO - Journal of Neuroscience

JF - Journal of Neuroscience

SN - 0270-6474

IS - 47

ER -