Frequency response of the human vestibulo-ocular reflex system at low frequencies: the effect of adaptation. I....

From the mathematical model of the human vestibulo-ocular reflex (VOR) system, the frequency response has been calculated for harmonic sinusoidal acceleration. The addition of an adaptation term to the second order model, describing the cupular behaviour, results in considerable changes in the response characteristics in the low frequency region. An attempt has been made to quantify the influence of the cupular time constant T1 and the adaptation time constant Ta on the amplitude and phase characteristics of the transfer function, which represents the human VOR system. The results of this theoretical study will be employed in the following paper.