Attended but unseen: Visual attention is not sufficient for visual awareness
Attended but unseen: Visual attention is not sufficient for visual awareness
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DOI：
10.1016/j.neuropsychologia.2007.11.036
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发表时间：
2008-01-01
期刊：
影响因子：
2.6
通讯作者：
Heywood, C. A.
中科院分区：
文献类型：
--
作者：
Kentridge, R. W.;Nijboer, T. C. W.;Heywood, C. A.
有没有哪一种心理过程会引起视觉意识？其中一个候选因素是选择性注意力--当我们关注某件事时，似乎总是能看到它。但是，如果注意力可以选择性地增强我们对看不见的刺激的反应，那么注意力就不能成为觉察的充分先决条件。书名/作者：Reach of[Kentbridge，Heywood，C.盲目地注意而不觉察。伦敦皇家学会论文集，B辑，266,1805-1811；肯特里奇，R.W.，海伍德，C.A.和魏斯克兰茨，L.(2004年)。空间注意加速了盲人在没有意识的情况下的辨别速度。神经心理学，42,831-835。]在失明受试者GY身上就表现出了这样的分离。在这里，我们测试这种解离是否适用于正常人群。我们向观察者展示了一对对彩色圆盘，每个圆盘都被随后呈现的彩色环所掩盖。这些圆盘起到了基数的作用，当它们的颜色匹配时，它们加速了对环的颜色的识别，而当它们不同时，它们的速度就变慢了。我们发现，注意的位置调节了这种启动效应的大小。然而，素数被元对比掩蔽变得看不见，尽管有人出席，但仍然看不到。因此，视觉注意可以促进对看不见的目标的处理，因此不能成为视觉意识的充分前提。(C)2007爱思唯尔有限公司。保留所有权利。
Does any one psychological process give rise to visual awareness? One candidate is selective attention-when we attend to something it seems we always see it. But if attention can selectively enhance our response to an unseen stimulus then attention cannot be a sufficient precondition for awareness. Kentridge, Heywood & Weiskrantz [Kentridge, R. W., Heywood, C. A., & Weiskrantz, L. (1999). Attention without awareness in blindsight. Proceedings of the Royal Society of London, Series B, 266, 1805-1811; Kentridge, R. W., Heywood, C. A., & Weiskrantz, L. (2004). Spatial attention speeds discrimination without awareness in blindsight. Neuropsychologia, 42, 831-835.] demonstrated just such a dissociation in the blindsight subject GY. Here, we test whether the dissociation generalizes to the normal population. We presented observers with pairs of coloured discs, each masked by the subsequent presentation of a coloured annulus. The discs acted as primes, speeding discrimination of the colour of the annulus when they matched in colour and slowing it when they differed. We show that the location of attention modulated the size of this priming effect. However, the primes were rendered invisible by metacontrast-masking and remained unseen despite being attended. Visual attention could therefore facilitate processing of an invisible target and cannot, therefore, be a sufficient precondition for visual awareness. (c) 2007 Elsevier Ltd. All rights reserved.