PDF(Pubmed)
Abstract：
This study addresses an issue in attentional distribution in a binocular visual system using RSVP tasks under Attentional Blink (AB) experimental protocols. In Experiment 1, we employed dichoptic RSVP to verify whether, under interocular competition, attention may be captured by a monocular channel. Experiment 2 was a control experiment, where a monoptic RSVP assessed by both or only one eye determines whether Experiment 1 monocular condition results were due to an allocation of attention to one eye. Experiment 3 was also a control experiment designed to determine whether Experiment 1 results were due to the effect of interocular competition or to a diminished visual contrast. Results from Experiment 1 revealed that dichoptic presentations caused a delay in the type stage of the Wyble\'s eSTST model, postponing the subsequent tokenization process. The delay in monocular conditions may be further explained by a visual attenuation, due to fusion of target and an empty frame. Experiment 2 evidenced the attentional allocation to monocular channels when forced by eye occlusion. Experiment 3 disclosed that monocular performance in Experiment 1 differs significantly from conditions with interocular competition. While both experiments revealed similar performance in monocular conditions, rivalry conditions exhibit lower detection rates, suggesting that competing stimuli was not responsible for Experiment 1 results. These findings highlight the differences between dichoptic and monoptic presentations of stimuli, particularly on the AB effect, which appears attenuated or absent in dichoptic settings. Furthermore, results suggest that monoptic presentation and binocular fusion stages were a necessary condition for the attentional allocation.
摘要：
本研究在注意闪烁（AB）实验协议下使用RSVP任务解决了双目视觉系统中注意分布的问题。在实验1中，我们使用二磷酸RSVP来验证是否，在眼间竞争下，注意力可以由单眼通道捕获。实验2是对照实验,其中由两只或仅一只眼睛评估的单视RSVP确定实验1的单眼状况结果是否归因于将注意力分配给一只眼睛。实验3也是对照实验，旨在确定实验1的结果是由于眼间竞争的影响还是由于视觉对比度降低。实验1的结果表明，二分表现导致了Wyble的eSTST模型类型阶段的延迟，推迟随后的标记化过程。单眼状况的延迟可以通过视觉衰减来进一步解释，由于目标和空帧的融合。实验2证明了在眼睛阻塞的情况下，注意力分配给单眼通道。实验3揭示了实验1中的单眼表现与具有眼间竞争的条件明显不同。虽然两个实验在单眼条件下都显示出相似的表现，竞争条件表现出较低的检测率，这表明竞争刺激不是实验1结果的原因。这些发现强调了刺激的双视和单视表现之间的差异，特别是AB效应，在二联设置中似乎减弱或不存在。此外，结果表明，单视表现和双眼融合阶段是注意力分配的必要条件。
