TABLE 2:

Pool fractions from the myelination model

Region	fmy		fma		fmx		fmy/fma
	18q−	Control	18q−	Control	18q−	Control	18q−	Control
FWM	0.067 ± 0.023	0.171 ± 0.021	0.458 ± 0.035	0.536 ± 0.027	0.474 ± 0.036	0.295 ± 0.018	0.147	0.319
SWM	0.085 ± 0.017	0.183 ± 0.021	0.423 ± 0.022	0.475 ± 0.028	0.493 ± 0.027	0.343 ± 0.021	0.200	0.387
PWM	0.079 ± 0.023	0.186 ± 0.012	0.394 ± 0.059	0.463 ± 0.026	0.526 ± 0.045	0.351 ± 0.022	0.200	0.403
Genu	0.034 ± 0.020	0.155 ± 0.020	0.542 ± 0.025	0.602 ± 0.031	0.423 ± 0.026	0.245 ± 0.026	0.063	0.257
Splenium	0.053 ± 0.015	0.157 ± 0.022	0.515 ± 0.075	0.538 ± 0.052	0.444 ± 0.071	0.304 ± 0.038	0.102	0.292
MCBP	0.043 ± 0.025	0.117 ± 0.022	0.469 ± 0.054	0.461 ± 0.041	0.489 ± 0.047	0.421 ± 0.028	0.091	0.254

Note.—f_my indicates the myelin pool fraction; f_ma, myelinated axon pool fraction; and f_mx, mixed pool fraction. Equilibrium fractions are from the model ± SDs of measured fractions about these values for age >4 years.