On the nature of the stimulus information necessary for estimating mean size of visual arrays.
On the nature of the stimulus information necessary for estimating mean size of visual arrays.
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DOI：
10.1167/9.9.7
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发表时间：
2009-08-19
影响因子：
1.8
通讯作者：
Blake R
中科院分区：
文献类型：
--
作者：
Joo SJ;Shin K;Chong SC;Blake R
本文探讨了用于计算不同大小的视觉对象的阵列的平均视觉大小的表示的性质。在实验1中，我们发现，平均大小的判断是准确的，即使当这些判断所依据的个别对象（圆圈）分布在两只眼睛之间。平均大小的判断受损，但是，当一个子集的组成对象参与估计的平均大小被呈现不可见的眼间抑制。这些研究结果表明，平均大小计算从相对精致的刺激信息表示在视觉处理阶段超出那些参与双目组合和眼间抑制。在实验2中，我们使用了注意瞬脱范式，以了解是否这种细化的信息容易受到注意的限制。准确性的平均大小的判断是不变的，当两个阵列中的一个圆圈内提出了一个快速的串行视觉呈现序列，无论任务要求（单与双任务）和阵列的时间相对于一个目标，这是注意力的焦点的短暂出现。显然，即使在没有集中注意力的情况下，用于计算平均大小的细化刺激信息仍然可用。
This paper explores the nature of the representations used for computing mean visual size of an array of visual objects of different sizes. In Experiment 1 we found that mean size judgments are accurately made even when the individual objects (circles) upon which those judgments were based were distributed between the two eyes. Mean size judgments were impaired, however, when a subset of the constituent objects involved in the estimation of mean size were rendered invisible by interocular suppression. These findings suggest that mean size is computed from relatively refined stimulus information represented at stages of visual processing beyond those involved in binocular combination and interocular suppression. In Experiment 2 we used an attentional blink paradigm to learn whether this refined information was susceptible to the constraints of attention. Accuracy of mean size judgments was unchanged when one of the two arrays of circles was presented within a rapid serial visual presentation sequence, regardless of task requirement (single vs. dual task) and the array’s time of presentation relative to the brief appearance of a target that was the focus of attention. Evidently the refined stimulus information used for computing mean size remains available even in the absence of focused attention.
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影响因子：
1.8
作者：
ATCHLEY, P;ANDERSEN, GJ
通讯作者：
ANDERSEN, GJ
影响因子：
1.7
作者：
Im, Hee Yeon;Chong, Sang Chul
通讯作者：
Chong, Sang Chul
影响因子：
64.8
作者：
Luck, SJ;Vogel, EK;Shapiro, KL
通讯作者：
Shapiro, KL
影响因子：
1.8
作者：
Chong, SC;Treisman, A
通讯作者：
Treisman, A
影响因子：
--
作者：
Pelli, DG
通讯作者：
Pelli, DG