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    Neither here nor there: localizing conflicting visual attributes

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    Publication date
    2003
    Author
    Whitaker, David J.
    Badcock, D.R.
    McGraw, Paul V.
    Skillen, Jennifer
    Keyword
    Luminance
    Texture
    Spatial Position
    Peer-Reviewed
    Yes
    
    Metadata
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    Abstract
    Natural visual scenes are a rich source of information. Objects often carry luminance, colour, motion, depth and textural cues, each of which can serve to aid detection and localization of the object within a scene. Contemporary neuroscience presumes a modular approach to visual analysis in which each of these attributes are processed within ostensibly independent visual streams and are transmitted to geographically distinct and functionally dedicated centres in visual cortex (van Essen & Maunsell, 1983; Zihl, von Cramon & Mai, 1983; Maunsell & Newsome, 1987; Tootell, Hadjikhani, Mendola, Marrett & Dale, 1998). In the present study we ask how the visual system localizes objects within this framework. Specifically, we investigate how the visual system assigns a unitary location to objects defined by multiple stimulus attributes, where such attributes provide conflicting positional cues. The results show that conflicting sources of visual information can be effortlessly combined to form a global estimate of spatial position, yet, this conflation of visual attributes is achieved at a cost to localization accuracy. Furthermore, our results suggest that the visual system assigns more perceptual weight (Landy, 1993; Landy & Kojima, 2001) to visual attributes which are reliably related to object contours.
    URI
    http://hdl.handle.net/10454/4058
    Version
    No full-text available in the repository
    Citation
    McGraw, P. V., Whitaker, D., Badcock, D. R. and Skillen, J. (2003). Neither here nor there: localizing conflicting visual attributes. Journal of Vision. Vol. 3, No. 4, pp. 265-273.
    Link to publisher’s version
    http://dx.doi.org/10.1167/3.4.2
    Type
    Article
    Collections
    Life Sciences Publications

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