Visual attention modulates signal detectability.
Visual attention modulates signal detectability.
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DOI：
10.1037//0096-1523.16.4.802
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发表时间：
1990-11
期刊：
影响因子：
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通讯作者：
H. Hawkins;S. Hillyard;S. Luck;M. Mouloua;C. Downing;D. P. Woodward
中科院分区：
文献类型：
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作者：
H. Hawkins;S. Hillyard;S. Luck;M. Mouloua;C. Downing;D. P. Woodward
视觉空间注意影响微弱信号检测的机制一直是相当大的争论主题。众所周知，空间线索加快了信号检测的速度。这可能意味着注意线索在检测过程中调节感觉信息的处理，或者，可替换地，线索产生有利于在线索位置输入的决策偏向。这些可能性在3个空间线索实验中得到了评估。实验1使用外围线索，实验2和实验3使用中央线索。提示同样提高了测量灵敏度P(A)和d‘，用于在所有3个实验中进行简单的亮度检测。在某些情况下，它还导致决策标准(Beta)的变化。这些发现表明，视觉-空间注意通过增加线索位置处输入的感觉增益或优先处理线索输入来促进检测过程中感觉输入的处理。
The mechanism by which visual-spatial attention affects the detection of faint signals has been the subject of considerable debate. It is well known that spatial cuing speeds signal detection. This may imply that attentional cuing modulates the processing of sensory information during detection or, alternatively, that cuing acts to create decision bias favoring input at the cued location. These possibilities were evaluated in 3 spatial cuing experiments. Peripheral cues were used in Experiment 1 and central cues were used in Experiments 2 and 3. Cuing similarly enhanced measured sensitivity, P(A) and d', for simple luminance detection in all 3 experiments. Under some conditions it also induced shifts in decision criteria (beta). These findings indicate that visual-spatial attention facilitates the processing of sensory input during detection either by increasing sensory gain for inputs at cued locations or by prioritizing the processing of cued inputs.