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Updated: May 14, 2025

Cortical Source Analysis of High-Density EEG Recordings in Children
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Cortical Source Analysis of High-Density EEG Recordings in Children

Published on: June 30, 2014

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一个EEG信号平滑算法使用上调和下调表示

Tran Hiep Dinh1, Avinash Kumar Singh2, Quang Manh Doan1

  • 1Faculty of Engineering Mechanics and Automation, VNU University of Engineering and Technology, 144 Xuan Thuy road, Cau Giay, Hanoi, Vietnam.

Journal of neural engineering
|April 30, 2025
PubMed
概括

一个新的算法通过将其转换为二进制图像并提取骨架来有效地平滑电脑电图 (EEG) 信号. 这种方法显著改善了脑电脑接口中的认知冲突 (CC) 检测,特别是在噪音较大的数据中.

关键词:
认知冲突是一种认知冲突.一个电脑电图 (electroencephalogram) 是一个电脑电图.信号处理 信号处理 信号处理骨化是一种骨化.稀释 稀释 稀释 在

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Upsampling01:22

Upsampling

Managing signal sampling rates is essential in digital signal processing to maintain signal integrity. A decimated signal, characterized by a reduced frequency range due to its lower sampling rate, can be upsampled by inserting zeros between each sample. This upsampling process expands the original spectrum and introduces repeated spectral replicas at intervals dictated by the new Nyquist frequency. To refine this zero-inserted sequence, it is passed through a lowpass filter with a cutoff...
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Downsampling01:20

Downsampling

When considering a sampled sequence with zero values between sampling instants, one can replace it by taking every N-th value of the sequence. At these integer multiples of N, the original and sampled sequences coincide. This process, known as decimation, involves extracting every N-th sample from a sequence, thereby creating a more efficient sequence.
The Fourier transform of the decimated sequence reveals a combination of scaled and shifted versions of the original spectrum. This...
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Reconstruction of Signal using Interpolation01:10

Reconstruction of Signal using Interpolation

Signal processing techniques are essential for accurately converting continuous signals to digital formats and vice versa. When a continuous signal is sampled with a period T, the resulting sampled signal exhibits replicas of the original spectrum in the frequency domain, spaced at intervals equal to the sampling frequency. To handle this sampled signal, a zero-order hold method can be applied, which creates a piecewise constant signal by retaining each sample's value until the next...
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