Table 4.

Inverse method specific algorithms.

Inverse Method	Formulation
Minimum norm [67]	$\widehat{\mathbf{D}}={({\mathbf{G}}^T\mathbf{G}+\lambda \mathbf{I})}^{-1}{\mathbf{G}}^T\mathbf{M}$
Weighted MN [67]	$\widehat{\mathbf{D}}={({\mathbf{G}}^T\mathbf{G}+\lambda {\mathbf{W}}^T\mathbf{W})}^{-1}{\mathbf{G}}^T\mathbf{M}$
LORETA [67]	$\widehat{\mathbf{D}}={({\mathbf{G}}^T\mathbf{G}+\lambda \mathbf{B}{\Delta }^T\Delta \mathbf{B})}^{-1}{\mathbf{G}}^T\mathbf{M}$
sLORETA [68]	$\widehat{\mathbf{D}}={\mathbf{D}}_{\mathbf{MN}}^{\mathbf{T}}{s}_{jj}^2{\mathbf{D}}_{\mathbf{MN}}$
LCMV beamformer [69]	$\widehat{\mathbf{D}}\left(\mathbf{r}\right)=$ ${[\mathbf{G}{\left(\mathbf{r}\right)}^T·{\mathbf{C}}^{-1}·\mathbf{G}\left(\mathbf{r}\right)]}^{-1}\mathbf{G}{\left(\mathbf{r}\right)}^T{\mathbf{C}}^{-1}·\mathbf{M}$
Single dipole [67]	${\displaystyle \widehat{\mathbf{D}}=\underset{{\mathbf{r}}_{\mathbf{dip}},\mathbf{D}}{min}\left|\right|\mathbf{G}({\mathbf{r}}_{\mathbf{j}},{\mathbf{r}}_{\mathbf{dip}})\mathbf{D}-\mathbf{M}\left|\right|}$