The locus of attentional effects in texture segmentation

Yaffa Yeshurun, Marisa Carrasco

Research output: Contribution to journalArticle

Abstract

Cuing covert spatial attention can increase spatial resolution. Here we pinpointed the specific locus of this effect using texture segmentation. At the level of visual cortex, texture segmentation theoretically involves passage of visual input through two layers of spatial linear filters separated by a pointwise nonlinearity. By manipulating the textures to differentially stimulate first- or second-order filters of various scales, we showed that the attentional effect consistently varied with the latter. These psychophysical results further support the hypothesis that attention increases resolution at the attended location and are consistent with an effect of attention at stages as early as the primary visual cortex.

Original languageEnglish (US)
Pages (from-to)622-627
Number of pages6
JournalNature Neuroscience
Volume3
Issue number6
DOIs
StatePublished - Jun 2000

ASJC Scopus subject areas

  • Neuroscience(all)

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