Fig. 13From: Frequency Preference Response to Oscillatory Inputs in Two-dimensional Neural Models: A Geometric Approach to Subthreshold Amplitude and Phase ResonanceEffects of changes in ϵ on the resonant properties of the linear system (29)–(30) for α=−2. a Envelope-plane diagrams for ϵ=−0.01 (left), ϵ=−0.1 (middle), and ϵ=−0.5 (right). b Impedance (Z) profiles. c Phase (ϕ) profilesBack to article page