基于希尔伯特-黄变换的AEP去噪方法
Jan 1, 2011·,,·
1 min read
张爱桃
李彬
王涛
Image credit: UnsplashAbstract
在高刺激率模式下,采用去卷积方法提取暂态的听觉诱发电位存在噪声敏感的问题,为此,提出一种结合希尔伯特-黄变换(HHT)与总体相关的去噪方法.利用HHT方法提取有用信号,通过总体相关方法区分混叠在同一频率段的信号和噪声,获得相关性强的成分.实验结果表明,该方法能在不增加刺激个数的情况下,使得平均信号的信噪比提高约4倍,且不需要信号的先验知识和人为干预,便于应用.
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