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. 2018 Apr 10;114(7):1667–1679. doi: 10.1016/j.bpj.2018.02.009

Table 1.

List of Symbols, Variables, and Definitions

χ˜ (ω) (m/N) response function T (K) bath temperature
ω (rad/s) frequency TA (K) active temperature
γ(t) (N/m) memory kernel τ (s) active persistence time
G(ω) (N/m2) complex shear modulus τ0 (s) active waiting time
G′(ω) (N/m2) elastic modulus v (m/s) active burst amplitude
G″(ω) (N/m2) viscous modulus C˜ (ω) (m2-s) position power spectral density
R (m) vesicle radius Eeff(ω) (N-m) effective energy
κ (N/m) local cage stiffness F˜cell (ω) (N-s) total cell force
ζα (s) passive timescale Scell(ω) (N2-s) cell force spectrum
α power-law exponent Sthermal(ω) (N2-s) thermal force spectrum
x(t) (m) vesicle position Sactive(ω) (N2-s) active force spectrum
x0(t) (m) local cage position F (N) active force amplitude
ξ(t) (N) thermal noise vvesicle (m/s) average vesicle velocity
vA(t) (m/s) active burst noise Δx (m) average step-displacement