Decomposition of high-frequency electrical conductivity into extracellular and intracellular compartments based on two-compartment model using low-to-high multi-b diffusion MRI

Table 3 Estimated values of high-frequency conductivity, \(\sigma _H\), extracellular ion concentration, \({\bar{c}}_{ec}\), extracellular conductivity, and intra-neurite conductivity within CSF, white matter, and gray matter regions

	\(\sigma _H\)	\({\bar{c}}_{ec}\)	Extracellular conductivity			Intra-neurite conductivity
Subject 1
CSF	1.43 ± 0.70	0.57 ± 0.25		1.35 ± 0.72			0.02 ± 0.02
GM	0.51 ± 0.30	0.45 ± 0.24		0.29 ± 0.20			0.07 ± 0.05
WM	0.40 ± 0.19	0.39 ± 0.16	L	T	A	L	T	A
WM	0.40 ± 0.19	0.39 ± 0.16	0.28 ± 0.22	0.15 ± 0.11	0.19 ± 0.14	0.19 ± 0.10	0.10 ± 0.04	0.13 ± 0.06
Subject 2
CSF	1.58 ± 0.67	0.63 ± 0.29		1.49 ± 0.66			0.02 ± 0.03
GM	0.53 ± 0.26	0.46 ± 0.22		0.30 ± 0.19			0.08 ± 0.05
WM	0.39 ± 0.15	0.40 ± 0.15	L	T	A	L	T	A
WM	0.39 ± 0.15	0.40 ± 0.15	0.25 ± 0.15	0.13 ± 0.08	0.17 ± 0.10	0.22 ± 0.10	0.10 ± 0.04	0.14 ± 0.06
Subject 3
CSF	1.51 ± 0.86	0.60 ± 0.34		1.41 ± 0.85			0.03 ± 0.03
GM	0.55 ± 0.32	0.49 ± 0.28		0.31 ± 0.20			0.07 ± 0.05
WM	0.39 ± 0.17	0.41 ± 0.16	L	T	A	L	T	A
WM	0.39 ± 0.17	0.41 ± 0.16	0.26 ± 0.17	0.13 ± 0.07	0.17 ± 0.10	0.21 ± 0.12	0.11 ± 0.05	0.14 ± 0.07

ISSN: 1475-925X