Table A1.

Geometry of Descending Corticofugal Axons^a

Parameterb	Description	Unit(s)	Value
D	Fiber diameter	µm	3
INL	Intermodal length (NoR-NoR separation)	µm	300
LNoR	Length of NoR	µm	1
DNoR	Diameter of NoR	µm	1.21
wNoR	Periaxonal width of NoR	m	2×10−3
LMYSA	Length of MYSA	µm	3
DMYSA	Diameter of MYSA	µm	1.21
wMYSA	Periaxonal width of MYSA	µm	2×10−3
LFLUT	Length of FLUT	µm	12
DFLUT	Diameter of FLUT	µm	1.73
wFLUT	Periaxonal width of FLUT	µm	4×10−3
LSTIN	Length of STIN	µm	89.67
DSTIN	Diameter of STIN	µm	1.73
wSTIN	Periaxonal width of STIN	µm	4×10−3
nl	Number of myelin lemella	unitless	51
nNoR	Number of NoR	unitless	1
nMYSA	Number of MYSA elements per segmentc	unitless	2
nFLUT	Number of FLUT elements per segmentc	unitless	2
nSTIN	Number of STIN elements per segmentc	unitless	3

^aThe electrical parameters of the axon model are summarized in (McIntyre et al., 2002).

^bNoR = Node of Ranvier, MYSA = myelin attachment segment, FLUT = paranodal main segment, STIN = internodal segment

^cOne segment has the following pattern: NoR-MYSA-FLUT-STIN-STIN-STIN-FLUT-MYSA…