Compatible and incompatible representations in visual sensory storage
Compatible and incompatible representations in visual sensory storage
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DOI：
10.1167/12.5.1
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发表时间：
2012-01-01
影响因子：
1.8
通讯作者：
Smithson，Hannah E.
中科院分区：
文献类型：
--
作者：
Bhardwaj，Rishi;Mollon，John D.;Smithson，Hannah E.
翻译后摘要：摘要感觉存储显示了一个短暂的部分报告的优势，幸存下来的视觉噪声模式（史密森和Mollon，2006年）。我们测试了这种优势是否存在于不同类型的高对比度掩模中。目标是一个3× 4的数字数组。掩码可以是（a）噪声模式，（B）八数组，或（c）随机数字数组。在初步实验中，目标和掩模交错（在140 Hz）和目标对比度是不同的，以确定性能下降到机会的水平。在主要实验中，目标和面具分开的刺激间隔（ISI）为100，150，或200毫秒。听觉部分报告线索，提出目标偏移后240毫秒支持部分报告的优势，在所有的ISI噪声面具，在ISI大于100毫秒的数字-8面具，但不是在任何ISI的随机数面具。增加提示延迟，在240至730毫秒的范围内，产生了下降的优势，我们测量。不同类型的面具在部分报告优势上的差异要求将视觉感觉储存模型修正为一个单一的画布，连续的项目叠加在上面。当掩模和目标充分不同时，低对比度目标数字的表示可以独立于随后的高对比度掩模的表示而保持。然而，当相同的目标之后是由高对比度随机数字组成的掩码时，目标的独立表示不保持可供访问。
Abstract:Abstract Sensory storage shows a short-lived part-report advantage that survives an aftercoming visual noise pattern (Smithson & Mollon, 2006). We tested whether such an advantage survives different types of high-contrast mask. The target was a 3× 4 array of digits. The mask could be (a) a noise pattern,(b) an array of eights, or (c) an array of random digits. In a preliminary experiment, target and mask were interleaved (at 140 Hz) and target contrast was varied to determine the level at which performance fell to chance. In the main experiment, target and mask were separated by an inter-stimulus-interval (ISI) of 100, 150, or 200 ms. An auditory part-report cue that was presented 240 ms after target offset supported a part-report advantage at all ISIs for noise masks, at ISIs greater than 100 ms for digit-8 masks, but not at any ISI for random-number masks. Increasing cue delay, in the range 240 to 730 ms, produced a decline in the advantages we measured. The differences in part-report superiority with different types of mask call for revision of the model of visual sensory storage as a single canvas on which successive items are superposed. When mask and target are sufficiently different, a representation of low-contrast target digits can be maintained independently of the representation of an aftercoming, high-contrast mask. However, when the same target is followed by a mask composed of high-contrast random digits, an independent representation of the target does not remain available for access.