Subliminal techniques have been used to enhance and enrich the interaction efficiency between humans and computers. However, the extent to which they are effective when presented at the periphery of the visual field remains unexplored. In addition, it is still unclear which stimulus type is more effective at influencing decisions when presented in peripheral areas. In this work, we investigate the degree to which three types of subliminal stimuli (images, shapes, words) are effective at influencing selection decisions, and how their efficiency degrades when presented at different visual angles. In a controlled study, we examine the selection performance of subliminal stimuli that are presented at thirteen visual angles and tested using two presentation durations (33ms, 66ms). Our findings suggest that subliminal words can be effective at peripheral angles. Also, types comparison showed that the word stimulus outperformed other types at specific visual angles. These findings provide insights for understanding how peripheral subliminal techniques can be used to support users while performing primary tasks. We examine these findings, present potential use-case scenarios for peripheral subliminal techniques and discuss ethical considerations around their use in user interfaces.

潜意识技术已被用于增强和丰富人与计算机之间的交互效率。然而，当它们出现在视野周围时，其有效程度尚待探索。此外，目前尚不清楚哪种刺激类型在外围地区出现时在影响决策方面更有效。在这项工作中，我们研究了三种类型的阈下刺激（图像，形状，单词）在影响选择决策方面的有效程度，以及当以不同的视角呈现时，它们的效率如何降低。在一项对照研究中，我们检查了以13个视角呈现并使用两个呈现持续时间（33毫秒，66毫秒）进行测试的潜意识刺激的选择性能。我们的发现表明，潜意识词在周围角度可能是有效的。此外，类型比较显示，在特定的视角下，单词刺激的表现优于其他类型。这些发现为理解外围潜意识技术如何在执行主要任务时为用户提供支持提供了见识。我们检查了这些发现，提出了外围潜意识技术的潜在用例场景，并讨论了在用户界面中使用它们时的道德考虑。