Listen, You are Writing! Speeding up Online Spelling with a Dynamic Auditory BCI.

Listen, You are Writing! Speeding up Online Spelling with a Dynamic Auditory BCI.
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听着,你在写!使用动态的听觉BCI加速在线拼写。

DOI:
10.3389/fnins.2011.00112
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发表时间:
2011
影响因子:
4.3
通讯作者:
Tangermann M
Tangermann M
中科院分区:
医学2区
文献类型:
--
作者:
Schreuder M;Rost T;Tangermann M

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在听觉域中表示脑机接口(BCI)的直观拼写接口并不简单。因此,基于事件相关电位(ERP)的所有现有方法至少部分地依赖于界面的视觉表示。这项在线研究引入了一个听觉拼写界面,消除了这种可视化的必要性。在两个会议中,一组健康受试者(N = 21)被要求使用文本输入应用程序,利用空间线索的AMUSE范式(听觉多类空间ERP)。拼写者依靠听觉刺激和核心反馈。在没有BCI经验的情况下,76%的参与者在第一次会议期间能够写出完整的句子。通过利用新引入的动态停止方法的优点,在第二会话期间可以达到1.41个字符/分钟(7.55位/分钟)的最大写入速度(平均:0.94个字符/分钟,5.26位/分钟)。第一次,所提出的工作表明,听觉脑机接口可以达到性能类似于国家的最先进的视觉脑机接口的基础上隐蔽注意。这些结果代表了迈向纯听觉BCI的重要一步。
Representing an intuitive spelling interface for brain–computer interfaces (BCI) in the auditory domain is not straight-forward. In consequence, all existing approaches based on event-related potentials (ERP) rely at least partially on a visual representation of the interface. This online study introduces an auditory spelling interface that eliminates the necessity for such a visualization. In up to two sessions, a group of healthy subjects (N = 21) was asked to use a text entry application, utilizing the spatial cues of the AMUSE paradigm (Auditory Multi-class Spatial ERP). The speller relies on the auditory sense both for stimulation and the core feedback. Without prior BCI experience, 76% of the participants were able to write a full sentence during the first session. By exploiting the advantages of a newly introduced dynamic stopping method, a maximum writing speed of 1.41 char/min (7.55 bits/min) could be reached during the second session (average: 0.94 char/min, 5.26 bits/min). For the first time, the presented work shows that an auditory BCI can reach performances similar to state-of-the-art visual BCIs based on covert attention. These results represent an important step toward a purely auditory BCI.
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