由于几个因素,周边视觉受到限制,如视觉分辨率,拥挤,和注意。当注意力不指向刺激时,检测,歧视,和身份经常受到损害。最近的研究发现了一种强烈限制周边视觉的新现象,\"冗余掩码\"。在冗余掩码中,重复模式中感知项目的数量减少。例如,在外围视野中呈现三行并要求参与者报告行数时,通常只报告两条线。这里,我们调查了注意力在冗余掩蔽中起什么作用.如果冗余屏蔽是由于对目标的关注有限,当分配给目标的注意力较少时,它应该会更强,当注意力最大限度地集中在目标上时就会缺席。向参与者展示了线阵列,并报告了三种提示条件下的线数(即,单提示,双提示,并且没有提示)。在所有提示条件下都观察到冗余掩蔽,观察员报告的线路比单一线路少,双,没有线索条件。这些结果表明,冗余掩蔽不是由于注意力有限。与双线和无提示条件相比,报告的行数更接近单线中的正确行数。这表明注意力的减少会损害刺激歧视,复制注意力减少的典型影响。一起来看,我们的结果表明,对外周呈现的刺激的注意程度调节了辨别表现,但不考虑冗余掩码。
Peripheral vision is limited due to several factors, such as visual resolution, crowding, and attention. When attention is not directed towards a stimulus, detection, discrimination, and identification are often compromised. Recent studies have found a new phenomenon that strongly limits peripheral vision, \"redundancy masking\". In redundancy masking, the number of perceived items in repeating patterns is reduced. For example, when presenting three lines in the peripheral visual field and asking participants to report the number of lines, often only two lines are reported. Here, we investigated what role attention plays in redundancy masking. If redundancy masking was due to limited attention to the target, it should be stronger when less attention is allocated to the target, and absent when attention is maximally focused on the target. Participants were presented with line arrays and reported the number of lines in three cueing conditions (i.e., single cue, double cue, and no cue). Redundancy masking was observed in all cueing conditions, with observers reporting fewer lines than presented in the single, double, and no cue conditions. These results suggest that redundancy masking is not due to limited attention. The number of lines reported was closer to the correct number of lines in the single compared to the double and the no cue conditions, suggesting that reduced attention additionally compromised stimulus discrimination, and replicating typical effects of diminished attention. Taken together, our results suggest that the extent of attention to peripherally presented stimuli modulates discrimination performance, but does not account for redundancy masking.