The HYOID_scaled model is an improved model of the head and neck, that is suitable for dynamic simulations. Full description of the development of this model has been accepted for publication:
Mortensen J, Vasavada A., Merryweather A., "The inclusion of hyoid muscles improve moment generating capacity and dynamic simulations in musculoskeletal models of the head and neck", PLOS ONE, 2018.
The folder, "Mortensen et al. 2018, PLOS ONE" contains all the model/data associated with the above publication. These include modified MASI models (https://simtk.org/projects/csibath) which are available under the Creative Commons Attribution-NonCommercial License (http://creativecommons.org/licenses/by-nc/3.0/).