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首页> 外文期刊>The Royal Society Proceedings B: Biological Sciences >Contrast discrimination, non-uniform patterns and change blindness.
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Contrast discrimination, non-uniform patterns and change blindness.

机译：对比歧视，不均匀的样式和改变盲目性。

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摘要

Change blindness--our inability to detect large changes in natural scenes when saccades, blinks and other transients interrupt visual input--seems to contradict psychophysical evidence for our exquisite sensitivity to contrast changes. Can the type of effects described as 'change blindness' be observed with simple, multi-element stimuli, amenable to psychophysical analysis? Such stimuli, composed of five mixed contrast elements, elicited a striking increase in contrast increment thresholds compared to those for an isolated element. Cue presentation prior to the stimulus substantially reduced thresholds, as for change blindness with natural scenes. On one hand, explanations for change blindness based on abstract and sketchy representations in short-term visual memory seem inappropriate for this low-level image property of contrast where there is ample evidence for exquisite performance on memory tasks. On the other hand, the highly increased thresholds for mixed contrast elements, and the decreased thresholds when a cue is present, argue against any simple early attentional or sensory explanation for change blindness. Thus, psychophysical results for very simple patterns cannot straightforwardly predict results even for the slightly more complicated patterns studied here.
机译：改变失明-当扫视，眨眼和其他瞬态中断视觉输入时，我们无法检测自然场景中的大变化-似乎与心理物理学证据相矛盾，因为我们对对比变化的敏感度很高。是否可以通过简单的，多元素的，适合心理生理分析的刺激来观察被描述为“改变失明”的影响类型？这种刺激物由五个混合的对比元素组成，与隔离元素相比，其对比度增加阈值显着增加。刺激之前的提示呈现方式大大降低了阈值，例如自然场景中的变化盲目性。一方面，对于短期的视觉记忆中基于抽象和粗略表示的变更盲目性的解释似乎不适用于这种低级的对比度图像特性，因为在这种情况下，有足够的证据证明在记忆任务上表现出色。另一方面，混合对比元素的阈值高度增加，而提示时阈值则降低，这与任何简单的早期注意或感官解释都无异。因此，即使对于这里研究的稍微复杂的模式，非常简单的模式的心理物理结果也无法直接预测结果。

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