Department of Psychology, University of Iowa, , 11 Seashore Hall E, Iowa City, IA 52242, USA.
Philos Trans R Soc Lond B Biol Sci. 2013 Sep 9;368(1628):20130061. doi: 10.1098/rstb.2013.0061. Print 2013 Oct 19.
We examined the conditions under which a feature value in visual working memory (VWM) recruits visual attention to matching stimuli. Previous work has suggested that VWM supports two qualitatively different states of representation: an active state that interacts with perceptual selection and a passive (or accessory) state that does not. An alternative hypothesis is that VWM supports a single form of representation, with the precision of feature memory controlling whether or not the representation interacts with perceptual selection. The results of three experiments supported the dual-state hypothesis. We established conditions under which participants retained a relatively precise representation of a parcticular colour. If the colour was immediately task relevant, it reliably recruited attention to matching stimuli. However, if the colour was not immediately task relevant, it failed to interact with perceptual selection. Feature maintenance in VWM is not necessarily equivalent with feature-based attentional selection.
我们研究了视觉工作记忆（VWM）中特征值在何种条件下将视觉注意力吸引到匹配刺激上。先前的研究表明，VWM 支持两种不同性质的表示状态：与知觉选择相互作用的活跃状态和不相互作用的被动（或附属）状态。另一种假设是，VWM 支持单一形式的表示，特征记忆的精度控制表示是否与知觉选择相互作用。三项实验的结果支持了双状态假说。我们确定了参与者保持特定颜色的相对精确表示的条件。如果颜色立即与任务相关，则它会可靠地吸引注意力到匹配的刺激上。但是，如果颜色与任务不立即相关，则它无法与知觉选择相互作用。VWM 中的特征维持并不一定等同于基于特征的注意力选择。
