AI Article Synopsis
- The study investigates how the order of maximum length sequences (m-sequences) affects noise attenuation in auditory evoked potentials (AEPs) using EEG data.
- Results indicate that the noise attenuation ratios align with theoretical predictions, showing effective noise reduction regardless of the m-sequence order used.
- The findings suggest that AEPs remain consistent across different m-sequence orders, highlighting a more effective framework for applying m-sequence methods to analyze non-linear AEPs.
Article Abstract
The maximum length sequence (m-sequence) has been successfully used to study the linear/nonlinear components of auditory evoked potential (AEP) with rapid stimulation. However, more study is needed to evaluate the effect of the m-sequence order in terms of the noise attenuation performance. This study aimed to address this issue using response-free electroencephalogram (EEG) and EEGs with nonlinear AEPs. We examined the noise attenuation ratios to evaluate the noise variation for the calculations of superimposed averaging and cross-correlation, respectively, which constitutes the main process in the deconvolution method using the dataset of spontaneous EEGs to simulate the cases of different orders (order 5 to 12) of m-sequences. And an experiment using m-sequences of order 7 and 9 was performed in true cases with substantial linear and nonlinear AEPs. The results demonstrate that the noise attenuation ratio is well agreed with the theoretical value derived from the properties of m-sequences on the random noise condition. The comparison of waveforms for AEP components from two m-sequences showed high similarity suggesting the insensitivity of AEP to the m-sequence order. This study provides a more comprehensive solution to the selection of m-sequences which will facilitate the feasible application on the nonlinear AEP with m-sequence method.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9935107 | PMC |
| http://dx.doi.org/10.7507/1001-5515.201703065 | DOI Listing |
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