The Mind-Writing Pupil: A Human-Computer Interface Based on Decoding of Covert Attention through Pupillometry.
The Mind-Writing Pupil: A Human-Computer Interface Based on Decoding of Covert Attention through Pupillometry.
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DOI：
10.1371/journal.pone.0148805
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发表时间：
2016
期刊：
影响因子：
3.7
通讯作者：
Van der Stigchel S
中科院分区：
文献类型：
--
作者：
Mathôt S;Melmi JB;van der Linden L;Van der Stigchel S
我们提出了一种新的人机界面，是基于通过瞳孔解码的注意。我们的方法建立在最近的发现基础上，即隐蔽的视觉注意会影响瞳孔的光反应：当你隐蔽地（不看它）注意到明亮的刺激时，你的瞳孔会收缩，而不是黑暗的刺激。在我们的方法中，参与者秘密地注意到几个具有振荡亮度的字母中的一个。瞳孔大小反映了所选字母的亮度，这使我们能够以高精度和真实的时间来确定参与者打算选择哪个字母。我们的方法的性能可以与迄今为止最好的内隐注意脑机接口相媲美，并且具有以下几个优点：除了瞳孔大小的变化之外，不需要任何运动;不需要物理接触（即没有电极）;易于使用;并且可靠。潜在的应用包括：与完全锁定的患者沟通，持续注意力的训练，以及超安全的密码输入。
We present a new human-computer interface that is based on decoding of attention through pupillometry. Our method builds on the recent finding that covert visual attention affects the pupillary light response: Your pupil constricts when you covertly (without looking at it) attend to a bright, compared to a dark, stimulus. In our method, participants covertly attend to one of several letters with oscillating brightness. Pupil size reflects the brightness of the selected letter, which allows us–with high accuracy and in real time–to determine which letter the participant intends to select. The performance of our method is comparable to the best covert-attention brain-computer interfaces to date, and has several advantages: no movement other than pupil-size change is required; no physical contact is required (i.e. no electrodes); it is easy to use; and it is reliable. Potential applications include: communication with totally locked-in patients, training of sustained attention, and ultra-secure password input.