Weighted integration of visual position information.
Weighted integration of visual position information.
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DOI:
10.1167/11.14.11
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发表时间:
2011-12-01
影响因子:
1.8
通讯作者:
Krekelberg B
中科院分区:
文献类型:
--
作者:
Wright JM;Morris AP;Krekelberg B
The ability to localize visual objects is a fundamental component of human behavior and requires the integration of position information from object components. The retinal eccentricity of a stimulus and the locus of spatial attention can affect object localization, but it is unclear whether these factors alter the global localization of the object, the localization of object components, or both. We used psychophysical methods in humans to quantify behavioral responses in a centroid estimation task. Subjects located the centroid of briefly presented random dot patterns (RDPs). A peripheral cue was used to bias attention towards one side of the display. We found that although subjects were able to localize centroid positions reliably, they typically had a bias towards the fovea and a shift towards the locus of attention. We compared quantitative models that explain these effects either as biased global localization of the RDPs or as anisotropic integration of weighted dot component positions. A model that allowed retinal eccentricity and spatial attention to alter the weights assigned to individual dot positions best explained subjects’ performance. These results show that global position perception depends on both the retinal eccentricity of stimulus components and their positions relative to the current locus of attention.
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影响因子:
1.8
作者:
Bocianski, Diana;Muesseler, Jochen;Erlhagen, Wolfram
通讯作者:
Erlhagen, Wolfram
DOI:
10.1080/14640749108400960
发表时间:
1991-11-01
期刊:
QUARTERLY JOURNAL OF EXPERIMENTAL PSYCHOLOGY SECTION A-HUMAN EXPERIMENTAL PSYCHOLOGY
影响因子:
--
作者:
CHEAL, ML;LYON, DR
通讯作者:
LYON, DR
影响因子:
1.8
作者:
MORGAN, MJ;HOLE, GJ;GLENNERSTER, A
通讯作者:
GLENNERSTER, A
影响因子:
1.7
作者:
Denisova, Kristina;Singh, Manish;Kowler, Eileen
通讯作者:
Kowler, Eileen
影响因子:
1.8
作者:
McGowan, JW;Kowler, E;Chubb, C
通讯作者:
Chubb, C