The locus of attentional effects in texture segmentation.

by: Y Yeshurun, M Carrasco

Nature neuroscience, Vol. 3, No. 6. (June 2000), pp. 622-627.

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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.

@article{citeulike:2713431, 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.}, address = {Department of Psychology, New York University, New York, New York 10003, USA.}, author = {Yeshurun, Y. and Carrasco, M. }, citeulike-article-id = {2713431}, doi = {10.1038/75804}, issn = {1097-6256}, journal = {Nature neuroscience}, keywords = {attention, human, psychophysics, vision}, month = {June}, number = {6}, pages = {622--627}, posted-at = {2008-04-24 17:09:46}, priority = {2}, title = {The locus of attentional effects in texture segmentation.}, url = {http://dx.doi.org/10.1038/75804}, volume = {3}, year = {2000} }

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TY - JOUR ID - citeulike:2713431 L3 - citeulike-article-id:2713431 TI - The locus of attentional effects in texture segmentation. JF - Nature neuroscience VL - 3 IS - 6 SP - 622 EP - 627 AD - Department of Psychology, New York University, New York, New York 10003, USA. SN - 1097-6256 N2 - 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. KW - attention KW - human KW - psychophysics KW - vision AU - Yeshurun, Y AU - Carrasco, M PY - 2000/06// UR - http://dx.doi.org/10.1038/75804 ER -

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