Figure 4: The oscilloscope photographs of the experimental results and its analysis.

The oscilloscope photographs shows the actual dynamical behaviors of the TC neuron and the estimation results of the RTDE system in the normal and Parkinsonian states (time scale = 200 μs). In the RTDE system the hardware clock frequency is divided due to the hardware timing constraints and the clock division factor is 20 using a PLL block, so that the system timing requirement is met. The oscilloscope is used to display the experimental results and in high-resolution acquisition mode. (a1) TC neuron membrane potential in the normal state. (a2) The variable “h” of the TC neuron in the normal state. (a3) The variable “ω” of the CETC model in the normal state. (b1) TC neuron membrane potential in the Parkinsonian state. (b2) The variable “h” of the TC neuron in the Parkinsonian state. (b3) The variable “ω” of the TC neuron model in the Parkinsonian state. (c1) Stereoscopic image of a spiking trajectory of the TC relay neuron under the normal state in the three-dimensional phase space (V, h, ω). (c2) Stereoscopic image of a spiking trajectory of the TC relay neuron model under the Parkinsonian state in the three-dimensional phase space (V, h, ω). (d1) Absolute error of the estimation results under the normal state. (d2) Absolute error of the estimation results under the Parkinsonian state.