Table 1. Notation used in this study... | Rockefeller University Press

Table 1.

Notation used in this study

Variable/parameter	Units	Definition/meaning
${Ca}_{cyto}^{2 +}$	µM	Calcium in the cytoplasm
${Ca}_{ER}^{2 +}$	µM	Calcium in the ER (SpApp)
D	$\frac{µ m^{2}}{s}$	Diffusion rate
B_m	µM	Mobile buffers
B_f	Mol/(µm² s)	Fixed buffers
PDE		Partial differential equation
ODE		Ordinary differential equation
J_x	Mol/(µm² s)	Boundary flux due to x
CBP	µM	Calcium-binding proteins (calcium buffers)
^Vcyto	µm³	Volume of the cytoplasm excluding the SpApp volume
PM		Plasma membrane
SpApp		Spine apparatus
ECS		Extracellular space
n	µm	Scale factor to convert between volume reactions to boundary flux
ⁿPM	µm	Volume-to-surface area ratio of the cytoplasm to the PM
ⁿSpApp	µm	Volume-to-surface area ratio of the SpApp volume to the SpApp surface area
AUC	Ions/s	Area under the curve
EPSP	mV	Excitatory postsynaptic potential
BPAP	mV	Back-propagating action potential
NMDAR		N-methyl-D-aspartate receptor
VSCC		Voltage-sensitive calcium channel
PMCA		Plasma membrane calcium ATPase
NCX		Sodium–calcium exchanger

Variable/parameter	Units	Definition/meaning
${Ca}_{cyto}^{2 +}$	µM	Calcium in the cytoplasm
${Ca}_{ER}^{2 +}$	µM	Calcium in the ER (SpApp)
D	$\frac{µ m^{2}}{s}$	Diffusion rate
B_m	µM	Mobile buffers
B_f	Mol/(µm² s)	Fixed buffers
PDE		Partial differential equation
ODE		Ordinary differential equation
J_x	Mol/(µm² s)	Boundary flux due to x
CBP	µM	Calcium-binding proteins (calcium buffers)
^Vcyto	µm³	Volume of the cytoplasm excluding the SpApp volume
PM		Plasma membrane
SpApp		Spine apparatus
ECS		Extracellular space
n	µm	Scale factor to convert between volume reactions to boundary flux
ⁿPM	µm	Volume-to-surface area ratio of the cytoplasm to the PM
ⁿSpApp	µm	Volume-to-surface area ratio of the SpApp volume to the SpApp surface area
AUC	Ions/s	Area under the curve
EPSP	mV	Excitatory postsynaptic potential
BPAP	mV	Back-propagating action potential
NMDAR		N-methyl-D-aspartate receptor
VSCC		Voltage-sensitive calcium channel
PMCA		Plasma membrane calcium ATPase
NCX		Sodium–calcium exchanger