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Attention doesn't slide: spatiotopic updating after eye movements instantiates a new, discrete attentional locus.


ABSTRACT: During natural vision, eye movements can drastically alter the retinotopic (eye-centered) coordinates of locations and objects, yet the spatiotopic (world-centered) percept remains stable. Maintaining visuospatial attention in spatiotopic coordinates requires updating of attentional representations following each eye movement. However, this updating is not instantaneous; attentional facilitation temporarily lingers at the previous retinotopic location after a saccade, a phenomenon known as the retinotopic attentional trace. At various times after a saccade, we probed attention at an intermediate location between the retinotopic and spatiotopic locations to determine whether a single locus of attentional facilitation slides progressively from the previous retinotopic location to the appropriate spatiotopic location, or whether retinotopic facilitation decays while a new, independent spatiotopic locus concurrently becomes active. Facilitation at the intermediate location was not significant at any time, suggesting that top-down attention can result in enhancement of discrete retinotopic and spatiotopic locations without passing through intermediate locations.

SUBMITTER: Golomb JD 

PROVIDER: S-EPMC3097429 | biostudies-literature | 2011 Jan

REPOSITORIES: biostudies-literature

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Attention doesn't slide: spatiotopic updating after eye movements instantiates a new, discrete attentional locus.

Golomb Julie D JD   Marino Alexandria C AC   Chun Marvin M MM   Mazer James A JA  

Attention, perception & psychophysics 20110101 1


During natural vision, eye movements can drastically alter the retinotopic (eye-centered) coordinates of locations and objects, yet the spatiotopic (world-centered) percept remains stable. Maintaining visuospatial attention in spatiotopic coordinates requires updating of attentional representations following each eye movement. However, this updating is not instantaneous; attentional facilitation temporarily lingers at the previous retinotopic location after a saccade, a phenomenon known as the r  ...[more]

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