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. Author manuscript; available in PMC: 2011 May 1.
Published in final edited form as: J Mol Cell Cardiol. 2009 Nov 13;48(5):989–998. doi: 10.1016/j.yjmcc.2009.11.004

Fig. 9.

Fig. 9

The simplest scheme for generating anisotropy fluctuations in contracting myofibrils. A. Actin becomes immobilized when a cross-bridge binds to it resulting in a well defined direction of transition dipole (red arrow, left panel) and high anisotropy. Dipoles become disorganized when a cross-bridge dissociates, leading to low anisotropy (multiple arrows, right panel). B. A simple rectangular signal reflecting binding-dissociation of a cross-bridge. C. Autocorrelation function of a rectangular signal showing duration (tON seconds) of strongly attached state and detached (or weakly attached) state, lasting tOFF seconds.