(Color online) Medial profile of the VFs at the mid-coronal plane (left column) and contour of contact forces applied on the VFs (right column) at three contact time instants for the tension-imbalanced (asymmetric) model. The contact forces in the lateral and vertical directions are shown respectively in the upper and lower rows in the right column of each time instant. (a) t = 0.1181 s, the time instant when the two VFs are moving toward each other and the contact force is just activated, (b) t = 0.1183 s, the time instant of minimum glottal gap width, (c) t = 0.1186 s, the time instant when the two VFs are moving apart.