Non-parametric system identification of dynamic baroreflex from step response

In cardiovascular diseases, the assessment of baroreflex function requires the quantitative evaluation of dynamic properties. The wavelet-based time-frequency analysis was applied to the model baroreflex response in anesthetized rabbits with isolated carotid sinuses. The dynamic baroreflex properties could be accurately extracted from short-term step responses, regardless of background noises, compared to the standard FFT method. The results indicate that be applicable to clinical assessment of dynamic baroreflex function.