Evaluation of haptically augmented touchscreen gui elements under cognitive load
Evaluation of haptically augmented touchscreen gui elements under cognitive load
复制标题
认知负荷下触觉增强触摸屏 GUI 元素的评估
DOI：
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发表时间：
2007
期刊：
影响因子：
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通讯作者：
Mayukh Saubhasik
中科院分区：
文献类型：
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作者：
R. Leung;Karon E Maclean;Martin Bue Bertelsen;Mayukh Saubhasik
向移动设备添加富有表现力的触觉反馈具有提高其可用性的巨大潜力，特别是在需要视觉注意力的多任务环境中。压电致动器是一种适用于在移动设备上呈现富有表现力的触觉反馈的技术。我们描述了触摸屏图形用户界面按钮、进度条和滚动条的冗余压电触觉增强的设计，以及在不同认知负荷下的评估。我们触觉上增强的进度条和滚动条显著加快了任务的完成速度，并带来了有利的主观反应。我们进一步讨论了为触摸屏设计有用的触觉反馈所产生的见解，并强调了挑战，包括增强可用性的方法，价值最大化的交互类型，区分背景和前景信号的难度，触觉强度与分辨率之间的权衡，以及评估这些类型交互的微妙之处。
Adding expressive haptic feedback to mobile devices has great potential to improve their usability, particularly in multitasking situations where one's visual attention is required. Piezoelectric actuators are emerging as one suitable technology for rendering expressive haptic feedback on mobile devices. We describe the design of redundant piezoelectric haptic augmentations of touchscreen GUI buttons, progress bars, and scroll bars, and their evaluation under varying cognitive load. Our haptically augmented progress bars and scroll bars led to significantly faster task completion, and favourable subjective reactions. We further discuss resulting insights into designing useful haptic feedback for touchscreens and highlight challenges, including means of enhancing usability, types of interactions where value is maximized, difficulty in disambiguating background from foreground signals, tradeoffs in haptic strength vs. resolution, and subtleties in evaluating these types of interactions.