Figure 4.

Subthreshold resonance of a UBC in response to sinusoidal inputs with linearly and non-linearly increasing frequency. (A) Zap current input from 0 to 10 Hz linearly as I_input = I_ampsin(2f(t)t) with f(t) = f_maxt/T at I_amp = 1 pA, f_max = 10 Hz, and T = 10 s. (B) UBC voltage response triggered by the stimulus given in (A) in the full model. (Right) Fourier transform of UBC response showing the resonance of UBC dynamics with a peak frequency around 6 Hz. (C) Similar to (B) but simulated with the minimal model. (D) Zap current input from 0 to 10 Hz non-linearly as $I_{input}=I_{amp}sin(0.35t^3)$ at I_amp = 1 pA. (E,F) Similar to (B,C) showing UBC response and resonance.