Simulate a lumped model of the lower urinary tract

Version 1.0.2 (1.18 MB) by Zachary Danziger
This app lets you simulate the Nunez et al. three-state model of the lower urinary tract, adjust model parameters, change views, and save.
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Updated 28 Apr 2025

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This app lets you interact via GUI with the Nunez et al. 2024 model of the lower urinary tract. It supports timeseries views, state space views, saving/loading simulation data, manipulating parameters and initial conditions, and toggling displays of many physiological states.
The model is a 3-state ODE system comprised of bladder volume, tension, and neural sensing, but from these primary states the value of many other physiological quantities of interest are calculated, including bladder pressure, bladder radius, and bladder muscle commands.
Get more information about the model from the Technical Paper or a Light Blog Post Model Description.

Cite As

Zachary Danziger (2026). Simulate a lumped model of the lower urinary tract (https://www.mathworks.com/matlabcentral/fileexchange/180876-simulate-a-lumped-model-of-the-lower-urinary-tract), MATLAB Central File Exchange. Retrieved .

Nunez, Roberto, et al. “Onset of Spontaneous Filling and Voiding Cycles in the Lower Urinary Tract: A Modeling Study.” Bulletin of Mathematical Biology, vol. 86, no. 10, Aug. 2024, https://doi.org/10.1007/s11538-024-01320-1.

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MATLAB Release Compatibility
Created with R2024b
Compatible with any release
Platform Compatibility
Windows macOS Linux
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Version Published Release Notes
1.0.2

Attempting to fix how the app renders latex to accurately show parameter names. (Cosmetic change only.)
1.0.1

Corrected a dialogue box behavior that prevented the "store" feature from throwing an error in pre-2024 versions of MATLAB.
Note that pre-2024 versions of MATLAB may not interpret the LaTex code properly in the parameter input fields.
1.0.0