OpenCASA: A new open-source and scalable tool for sperm quality analysis
Fig 4
Two examples of the distribution of the instantaneous directionality angles ψ.
(a) Simulated sperm population without chemotaxis. (b) Simulated sperm population chemoattracted to θ = 0° (right). The ch-index provides information about the percentage of the angles ψ that point in the gradient direction with respect to the total number of angles taken into account (the total number of angles will depend on the option specified by the user). The parameters used to generate the simulation on the right were β = 1 and Responsiveness = 50%.