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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

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

  \(\sigma _H\) \({\bar{c}}_{ec}\) 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
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
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
0.26 ± 0.17 0.13 ± 0.07 0.17 ± 0.10 0.21 ± 0.12 0.11 ± 0.05 0.14 ± 0.07