Table 1.

Overview of stress fiber biomechanical models based on data obtained from subcellular laser nanosurgery.

	Viscoelastic model	Progressive linear collapse model	Progressive inhomogeneous collapse model
Stress fiber retraction	Decreasing exponential	Decreasing exponential	Decreasing exponential
Sarcomere retraction	Decreasing exponential	Linear	Time dependent 1/2 power law
Do all sarcomeres collapse?	No – only ones close to ablated side	Yes	Yes
Viscosities considered	Internal + external	Internal	Internal + external
External Crosslinking	Yes	No	No
Tension generation	Borne entirely due to myosin contractility	Borne due to the elasticity of the fiber and myosin contractility	Borne due to the elasticity of the fiber and myosin contractility