Communication Aid for ALS Patients Based on Event Related Brain Potentials

我们已经研究了任何神经生理学人员理解ALS患者要求的可能性。患者虽然保持智力活动，但没有说话的身体能力。在这项研究中，与受试者的交流是在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)出现在他的脑电(EEG)中，位于刺激的后面，这是对建议的视觉刺激进行智力评估的结果。这意味着我们很好地检测到了，基于Haar-Wavelet变换对事件相关电位进行了滤波，并对一些波形应用了平均方法。然后，利用这些方法进行了词组选择实验，取得了较好的效果。该系统在与ALS患者的交流中将有很大的实用价值。

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.