A simulation study assessing the efficiency of deriving evoked responses using high stimulus rate
A simulation study assessing the efficiency of deriving evoked responses using high stimulus rate
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DOI：
10.1109/iembs.2008.4650344
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发表时间：
2008-10
期刊：
影响因子：
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通讯作者：
Tao Wang;Yuan-yuan Su;Qian Shen;Jianhua Ma
中科院分区：
文献类型：
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作者：
Tao Wang;Yuan-yuan Su;Qian Shen;Jianhua Ma
本研究采用计算机模拟听觉诱发电位（AEPs）的方法，探讨了刺激频率对诱发反应情景记录效率的影响。我们研究AEP来自三个范例：1）传统的刺激合奏平均; 2）连续循环平均反卷积（CLAD）;和3）最大长度序列（MLS）的刺激，其中反卷积技术被纳入检索重叠的反应。通过理想响应和导出响应之间的相关系数来评估性能。结果表明，对于高速率刺激范例，SNR没有明显的改善，这表明高速率下的去卷积技术不会提供更有效的记录方法。此外，由于序列的较低抖动布置，与其他两种方法相比，来自CLAD范例的响应趋于恶化。
This study investigates the effects of stimulus rate on the recording efficiency of evoked-response scenario using a computer generated data simulating auditory evoked potentials (AEPs). We examine AEPs derived from three paradigms: 1) Conventional stimuli for ensemble averaging; 2) continuous loop averaging deconvolution (CLAD); and 3) maximum length sequence (MLS) stimuli, in which deconvolution techniques are incorporated to retrieve the overlapped responses. The performance is evaluated by correlation coefficients between the ideal and the derived responses. The results show that there is no distinct improvement of SNR for high rate stimulation paradigms, suggesting that the techniques of deconvolution in high rate will not provide more efficient recording approach. Further, responses from the CLAD paradigm tend to deteriorate compared to the other two methods due to the lower jittering arrangement of the sequence.