Attention, segregation, and textons: bridging the gap between object-based attention and texton-based segregation.

Attention, segregation, and textons: bridging the gap between object-based attention and texton-based segregation. Research Abstract Details 

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Attention, segregation, and textons: bridging the gap between object-based attention and texton-based segregation. Abstract Text:

Ohad Ben-Shahar,Brian J Scholl,Steven W Zucker,

Studies of object-based attention (OBA) have suggested that attentional selection is intimately associated with discrete objects. However, the relationship of this association to the basic visual features ('textons') which guide the segregation of visual scenes into 'objects' remains largely unexplored. Here we study this hypothesized relationship for one of the most conspicuous features of early vision: orientation. To do so we examine how attention spreads through uniform (one 'object') orientation-defined textures (ODTs), and across texture-defined boundaries in discontinuous (two 'objects') ODTs. Using the divided-attention paradigm we find that visual events that are known to trigger orientation-based texture segregation, namely perceptual boundaries defined by high orientation and/or curvature gradients, also induce a significant cost on attentional selection. At the same time we show that no effect is incurred by the absolute value of the textons, i.e., by the general direction (or, the 'grain') of the texture-in conflict with previous findings in the OBA literature. Collectively these experiments begin to reveal the link between object-based attention and texton-based segregation, a link which also offers important cross-disciplinary methodological advantages.

Attention, segregation, and textons: bridging the gap between object-based attention and texton-based segregation. Publishing Authors By Initials

O Ben-Shahar,BJ Scholl,SW Zucker,

For similar behavioral disciplines and activities: behavioral sciences: psychophysics research abstracts see: behavioral disciplines and activities: behavioral sciences: psychophysics research

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Attention, segregation, and textons: bridging the gap between object-based attention and texton-based segregation. Journal Published:

PUBLICATION TYPE: Research Support, U.S. Gov't,

Journal: Vision research

VOLUME: 47

Page Numbers: 845-60

Journal Abbreviation: Vision Res.

ISSN: 0042-6989

DAY: 19

MONTH: 01

YEAR: 2007

Attention, segregation, and textons: bridging the gap between object-based attention and texton-based segregation. Information

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LANGUAGE: eng

NlmUniqueID: 417402

Attention, segregation, and textons: bridging the gap between object-based attention and texton-based segregation. Keywords Mesh Terms:

KEYWORDS: Psychophysics

MESH TERMS: methods

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Grant and Affiliation Information for Attention, segregation, and textons: bridging the gap between object-based attention and texton-based segregation.

AFFILIATION: Department of Computer Science and the Zlotowski Center for Neuroscience, Ben-Gurion University, Beer-Sheva, Israel. ben-shahar@cs.bgu.ac.il

Country: England

AGENCY: United States NIMH

GRANT: 1R03 MH 63808-01

ACRONYM: MH

MEDLINETA: Vision Res

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