注意调制的MMN提取

International Conference on Neural Networks and Signal Processing, 2003. Proceedings of the 2003 Pub Date : 1900-01-01 DOI:10.1109/ICNNSP.2003.1279227

Ding Hy, Yew Dt

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引用次数: 2

摘要

听觉事件相关脑电位的失配负性(MMN)分量可以在没有注意和任务要求的情况下测量，是衡量中枢听觉功能的客观指标。而在诱发电位的收集中，选择性注意可能会影响诱发MMN的外观。在某些情况下，MMN可能紧随其后，甚至被P300取代。我们研究了注意力在MMN提取中的作用。在讨论这一现象的基础上，本文提出了一种由注意调制的系综平均方法。这种方法可以在很大程度上抑制分心的影响，提高MMN的振幅。此外，该方法可以缩短MMN提取实验的时间成本，有助于研究神经识别机制的复杂功能性质。

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The extraction of MMN modulated by attention

The mismatch negativity (MMN) component of the auditory event-related brain potential can be measured in the absence of attention and without any task requirements, which makes it the objective measure of the central auditory function. While in the collection of evoked potentials, selective attention may affect the appearance of the evoked MMN. In some cases, MMN may be followed or even substituted by P300. We investigated the role of attention on the MMN extraction. Based on the discussion of such phenomenon, an ensemble average method modulated by attention is proposed in the present study. This method may restrain the affection of distraction and increase the amplitude of MMN to a great extent. Furthermore, such method may shorten the time cost of MMN extraction experiment, which will be helpful for the research of complex function nature of neural discrimination mechanism.

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International Conference on Neural Networks and Signal Processing, 2003. Proceedings of the 2003

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