Figure 10.

Example results from a subject with chronic balance complaints following mild traumatic brain injury (mTBI) in comparison to a control subject. Model fits (solid lines) to the frequency response function data in (A) identified equal sensory weight measures of W_prop = 0.42 for both subjects. The divergence between the mTBI and control results are accounted for by the mTBI subject having a lower value of the neural controller proportional gain parameter, K_p, and lower value of the torque feedback parameter, K_t. The functional consequences of these differences are that the surface-tilt stimulus evoked much larger sway in the mTBI subject (B).