Department of Psychology, Princeton University, Princeton, NJ 08540, USA.
Science. 2010 Jan 1;327(5961):97-9. doi: 10.1126/science.1180029. Epub 2009 Nov 12.
What qualifies a neural representation for a role in subjective experience? Previous evidence suggests that the duration and intensity of the neural response to a sensory stimulus are factors. We introduce another attribute--the reproducibility of a pattern of neural activity across different episodes--that predicts specific and measurable differences between conscious and nonconscious neural representations independently of duration and intensity. We found that conscious neural activation patterns are relatively reproducible when compared with nonconscious neural activation patterns corresponding to the same perceptual content. This is not adequately explained by a difference in signal-to-noise ratio.
什么样的神经表示适合在主观体验中发挥作用？先前的证据表明，对感觉刺激的神经反应的持续时间和强度是两个因素。我们引入了另一个属性——模式的可重复性在不同事件中的神经活动——这可以预测意识和无意识神经表示之间的特定和可测量的差异，而与持续时间和强度无关。我们发现，与对应于相同感知内容的无意识神经激活模式相比，有意识的神经激活模式相对可重复。这不能用信噪比的差异来很好地解释。
