Model misspecification detection by means of multiple generator errors, using the observed potential map.
Model misspecification detection by means of multiple generator errors, using the observed potential map.
复制标题
使用观察到的电位图，通过多个生成器错误来对错误指定进行模型检测。
DOI：
10.1007/bf01184835
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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
由于模型规范错误，目前使用的偶极子源定位方法在拟合同时活动的偶极子时可能存在多发生器误差（MulGenErrs）。MulGenErr的大小是所使用的模型和偶极子参数的函数，包括偶极子的波形（时变幅度）。对于给定的拟合模型，通过检查MulGenErrs（或拟合参数）在不同波形下对同一偶极子的变化，可以确定该偶极子组拟合模型的精度。这种测试模型不规范的方法可以应用于诱发电位图，即使产生偶极子的参数是未知的。模型中拟合的偶极子参数只有在模型足够精确的情况下才能被接受。
Due to model misspecification, currently-used Dipole Source Localization (DSL) methods may contain Multiple-Generator Errors (MulGenErrs) when fitting simultaneously-active dipoles. The size of the MulGenErr is a function of both the model used, and the dipole parameters, including the dipoles' waveforms (time-varying magnitudes). For a given fitting model, by examining the variation of the MulGenErrs (or the fit parameters) under different waveforms for the same generating-dipoles, the accuracy of the fitting model for this set of dipoles can be determined. This method of testing model misspecification can be applied to evoked potential maps even when the parameters of the generating-dipoles are unknown. The dipole parameters fitted in a model should only be accepted if the model can be shown to be sufficiently accurate.