Tavella Michele, Leeb Robert, Rupp Rudiger, Millan Jose Del R
Non-Invasive Brain-Machine Interface, Center for Neuroprosthetics, School of Engineering, Ecole Polytechnique Fédérale de Lausanne, Switzerland.
Annu Int Conf IEEE Eng Med Biol Soc. 2010;2010:126-9. doi: 10.1109/IEMBS.2010.5627178.
In this paper we show how healthy subjects can operate a non-invasive asynchronous BCI for controlling a FES neuroprosthesis and manipulate objects to carry out daily tasks in ecological conditions. Both, experienced and novel subjects proved to be able to deliver mental commands with high accuracy and speed. Our neuroprosthetic approach relies on a natural interaction paradigm, where subjects delivers congruent MI commands (i.e., they imagining a movement of the same hand they control through FES). Furthermore, we have tested our approach in a common daily task such as handwriting, which requires the user to split his/her attention to multitask between BCI control, reaching, and the primary handwriting task itself. Interestingly, the very low number of erroneous trials illustrates how during the experiments subjects were able to deliver commands just when they intended to do so. Similarly, the subjects could perform actions while delivering, or preparing to deliver, mental commands.
在本文中，我们展示了健康受试者如何操作非侵入式异步脑机接口来控制功能性电刺激神经假体，并在自然环境中操纵物体以执行日常任务。经验丰富的受试者和新手受试者都证明能够以高精度和高速度发出心理指令。我们的神经假体方法依赖于一种自然交互范式，即受试者发出一致的运动想象指令（也就是说，他们想象用通过功能性电刺激控制的同一只手进行运动）。此外，我们在诸如手写这样的常见日常任务中测试了我们的方法，这要求用户在脑机接口控制、伸手动作和主要的手写任务本身之间分散注意力进行多任务操作。有趣的是，错误试验的数量非常少，这说明了在实验过程中受试者能够在他们想要发出指令的时候准确发出指令。同样，受试者在发出或准备发出心理指令时也能够执行动作。
