Communication Aid for ALS Patients Based on Event Related Brain Potentials

我们研究了从神经生理学的角度来理解肌萎缩侧索硬化症患者需求的可能性。这个病人没有说话的能力，但仍能进行智力活动。在这项研究中，与被测试者的交流是在ORT屏幕上显示的视觉刺激中进行的。例如，事件相关脑电位（ERP）出现在刺激后的脑电图（EEG）中，作为对提议的视觉刺激的智力评估的结果。这意味着我们可以很好地检测，基于haar -小波变换对ERP进行滤波，并对一些波形应用平均方法。然后，对一些用这些方法选择单词短语的实验，我们可以得到很好的结果。该系统在与渐冻症患者的交流中具有一定的实用价值。

We have studied the possibility of understanding ALS patient's requests by any neuro-physiological man-ners. The patient has no physical capability for speaking, though maintaining intellectual activities. In this study, communication with a testee is undertaken in a visual stimulus which is displayed on the ORT screen. For example, Event Related brain Potentials (ERP) appears within his Electroencephalogram (EEG) posterior to the stimulus as the result of intellectual evaluation of proposed visual stimuli. This means that we are well detection, ERP is filtered based on the Haar-Wavelet transform and applied averaging method for some wave-forms. Then, we could obtain a good result for some experiments which chose the word phrase by using these methods. This system will be of much practical use for the communication with ALS patients.