Orthogonal adaptation improves orientation discrimination

Colin W G Clifford, Anna Ma Wyatt, Derek H. Arnold, Stuart T. Smith, Peter Wenderoth

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    Abstract

    We investigated the effect of adaptation on orientation discrimination using two experienced observers, then replicated the main effects using a total of 50 naïve subjects. Orientation discrimination around vertical improved after adaptation to either horizontal or vertical gratings, but was impaired by adaptation at 7.5 or 15° from vertical. Improvement was greatest when adapter and test were orthogonal. We show that the results can be understood in terms of a functional model of adaptation in cortical vision.

    Original languageEnglish
    Pages (from-to)151-159
    Number of pages9
    JournalVision Research
    Volume41
    Issue number2
    DOIs
    Publication statusPublished - 2001

    Keywords

    • Adaptation
    • Computational model
    • Orientation discrimination
    • Spatial vision
    • Tilt aftereffect

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