Towards a unified model of vision and attention: Effects of visual landmarks and identity cues on covert and overt attention movements

Show simple item record Lambert, Anthony en Wilkie, J en Greenwood, A en Ryckman, Nathan en Sciberras-Lim, E en Booker, L-J en Tahara-Eckl, Lenore en 2018-10-10T03:24:35Z en 2018-03 en
dc.identifier.citation Undergoing revision, 2016 en
dc.identifier.issn 0096-1523 en
dc.identifier.uri en
dc.description.abstract To what extent are shifts of attention driven by encoding of visual-spatial landmarks, associated with useful locations, or by encoding of environmental cues that act as symbolic representations, providing information about where to look next? In Experiments 1-3 we found that when cues were presented with a long exposure time (300ms) attention shifts were driven by the symbolic identity of cue stimuli, independently of their visual-spatial (landmark) features; but when cues were exposed very briefly, (66ms), attention shifts were independent of symbolic information, and were driven instead by visual landmark features. This unexpected finding was interpreted in terms of the transient and sustained response characteristics of the M-cell and P-cell inputs to the dorsal and ventral visual streams, respectively, and informed our theoretical proposal that attentional effects elicited by visual-spatial landmarks may be driven by dorsal stream (‘where pathway’) encoding; while attentional effects driven by the symbolic identity of cues may be driven by ventral stream (‘what pathway’) encoding. Detailed predictions derived from this proposal, and based on distinct physiological properties of the two visual streams were tested and confirmed in Experiments 4-6. Our results suggest that a two-process view of attention shifting can be integrated with dual-stream models of vision. According to this unified theory: (1) Landmarks associated with visually useful locations elicit rapid, non-conscious shifts of attention, via non-semantic, dorsal visual stream encoding of their features and spatial relationships; (2) Slower, endogenous shifts of attention are elicited by ventral visual stream encoding of symbolic-semantic information. en
dc.publisher American Psychological Association en
dc.relation.ispartofseries Journal of Experimental Psychology: Human Perception and Performance en
dc.rights Items in ResearchSpace are protected by copyright, with all rights reserved, unless otherwise indicated. Previously published items are made available in accordance with the copyright policy of the publisher. en
dc.rights ©American Psychological Association, 2018. This paper is not the copy of record and may not exactly replicate the authoritative document published in the APA journal. Please do not copy or cite without author's permission. The final article is available, upon publication, at: en
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dc.rights.uri en
dc.title Towards a unified model of vision and attention: Effects of visual landmarks and identity cues on covert and overt attention movements en
dc.type Journal Article en
dc.identifier.doi 10.1037/xhp0000474 en
pubs.issue 3 en
pubs.begin-page 412 en
pubs.volume 44 en
dc.rights.holder Copyright: American Psychological Association en
dc.identifier.pmid 28816478 en
pubs.end-page 432 en
dc.rights.accessrights en
pubs.subtype Article en
pubs.elements-id 534324 en Science en Psychology en
pubs.record-created-at-source-date 2016-07-04 en
pubs.dimensions-id 28816478 en

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