MIT Media Lab, 75 Amherst St, E14-548, Cambridge, MA 02139, USA.
Sensors (Basel). 2019 Nov 27;19(23):5200. doi: 10.3390/s19235200.
Information about a person's engagement and attention might be a valuable asset in many settings including work situations, driving, and learning environments. To this end, we propose the first prototype of a device called AttentivU-a system that uses a wearable system which consists of two main components. Component 1 is represented by an EEG headband used to measure the engagement of a person in real-time. Component 2 is a scarf, which provides subtle, haptic feedback (vibrations) in real-time when the drop in engagement is detected. We tested AttentivU in two separate studies with 48 adults. The participants were engaged in a learning scenario of either watching three video lectures on different subjects or participating in a set of three face-to-face lectures with a professor. There were three conditions administrated during both studies: (1) biofeedback, meaning the scarf (component 2 of the system) was vibrating each time the EEG headband detected a drop in engagement; (2) random feedback, where the vibrations did not correlate or depend on the engagement level detected by the system, and (3) no feedback, when no vibrations were administered. The results show that the biofeedback condition redirected the engagement of the participants to the task at hand and improved their performance on comprehension tests.
关于一个人的参与度和注意力的信息可能是许多场景中的宝贵资产，包括工作环境、驾驶和学习环境。为此，我们提出了一种名为 AttentivU 的设备的第一个原型，该系统使用一个由两个主要组件组成的可穿戴系统。组件 1 由一个 EEG 头带表示，用于实时测量一个人的参与度。组件 2 是一条围巾，当检测到参与度下降时，它会实时提供微妙的触觉反馈（振动）。我们在两项独立的研究中测试了 AttentivU，共有 48 名成年人参与。参与者在观看三个关于不同主题的视频讲座或与教授进行三组面对面讲座的学习场景中进行了学习。在这两项研究中都进行了三种条件管理：（1）生物反馈，即系统的围巾（组件 2）每次检测到头带检测到参与度下降时都会振动；（2）随机反馈，其中振动与系统检测到的参与度水平不相关或不依赖，以及（3）无反馈，即不进行振动。结果表明，生物反馈条件将参与者的注意力重新引导到手头的任务上，并提高了他们在理解测试中的表现。
