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Fig. 5. Measured AP recovery (symbols) compared to the volume averaged model of AP
recovery (solid line) in small (A) and large (B) dark fibers. The dotted line
indicates the resting concentration. In the model, the myosin ATPase was
activated long enough to cause a decrease in AP that was comparable to the
measured data. (C,D) Three-dimensional graphs show the temporally and
spatially resolved concentrations of AP for small (C) and large (D) dark
levator fibers during a contraction-recovery cycle. This model output was
generated using parameters in Table
2. Note the absence of concentration gradients.