tailieunhanh - Analyzing event related potentials using adaptive filter

In this paper, datasets are collected from ERPLAB and journals provided available datasets with the stimulus of sound and light. Using adaptive noise cancellation (ANC) combined with LMS algorithm the waves P300 of ERP were detected and separated. | TAÏP CHÍ PHAÙT TRIEÅN KH&CN, TAÄP 18, SOÁ K4- 2015 Analyzing event related potentials using adaptive filter Nguyen Thi Minh Huong Le Quoc Khai Nguyen Chi Hai Ngô Minh Tri Huynh Quang Linh Ho Chi Minh city University of Technology,VNU-HCM (Manuscript Received on August 01st, 2015, Manuscript Revised August 27th, 2015) ABSTRACT: ERPs (Event Related Potentials) are EEG signals which are directly measured from cortical electrical response to external stimuli such as feelings, sensual or cognitive events. The evaluation of the amplitude and latency of the ERP wave has important significance in evaluating neurological reflex. However, the ERP wave amplitude is small compared with the EEG wave, and considerably affected by the noise such as eyes, muscles, heart motion etc. In this paper, datasets are collected from ERPLAB and journals provided available datasets with the stimulus of sound and light. Using adaptive noise cancellation (ANC) combined with LMS algorithm the waves P300 of ERP were detected and separated. The algorithm was evaluated by the ratio SNR and average value. Results were compared with other published tools such as P300 calculation algorithm of ERPLAB softwar. Key words: Event Related Potentials, Adaptive Noise Cancellation, Least Mean Square, Electroencephalogram. 1. INTRODUCTION Electroencephalography records (EEGs) carry information about different responses to certain stimuli in the human brain. Some of the characteristics of these signals are their frequencies and shapes. These components are in the order of just a few up to 200 μV, and the frequencies differ according to different neurological rhythms, such as the alpha, beta, delta and theta rhythms [1]. Event related potentials (ERPs) can be considered as voltage deflections generated by cortical neurons that are time-locked to specific events and associated with stages of information flow in specific cortical areas. ERPs were first identified in 1964, and have remained

TỪ KHÓA LIÊN QUAN
crossorigin="anonymous">
Đã phát hiện trình chặn quảng cáo AdBlock
Trang web này phụ thuộc vào doanh thu từ số lần hiển thị quảng cáo để tồn tại. Vui lòng tắt trình chặn quảng cáo của bạn hoặc tạm dừng tính năng chặn quảng cáo cho trang web này.