DSL and MUSIC under model misspecification and noise-conditions.
DSL and MUSIC under model misspecification and noise-conditions.
复制标题
模型错误指定和噪声条件下的 DSL 和 MUSIC。
DOI：
10.1007/bf01186773
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发表时间：
1994
期刊：
影响因子：
2.7
通讯作者：
Jewett,DL
中科院分区：
文献类型：
--
作者：
Zhang,Z;Jewett,DL
用简单的矢量解释了传统的DSL(偶极子源定位)和MUSIC(多信号分类)的概念。DSL和MUSIC在求权函数的方式上不同。在DSL和MUSIC中，通过将记录的势图投影到拟合权重函数上来求出拟合生成器幅值，该模型将权重函数转换为产生器位置/方向。当存在模型错误指定、噪声或两者同时存在时，DSL和MUSIC都会在拟合偶极子参数中引起误差。因此，准确的头部模型对于这两种方法得出可靠的结果都是至关重要的。
The concepts of both the traditional DSL (Dipole Source Localization) and MUSIC (Multiple Signal Classification) are explained using simple vectors. DSL and MUSIC differ in the way the weighting functions are found. In both DSL and MUSIC, the fitted generator magnitudes are found by projecting the recorded potential map onto the fitted weighting functions, and the model transfers the weighting functions into generator locations/orientations. Both DSL and MUSIC will cause errors in the fitted dipole parameters when there is model misspecification, noise, or both. Therefore, an accurate head model is essential for either method to give reliable results.