Figure 7. Membrane‐potential and LFP resonance frequencies are closely related .

A, the resonance frequency in the LFP surrounding a cell receiving apical white‐noise current input (yellow star) is shown for a cortical pyramidal cell model with a single quasi‐active conductance with increasing density with distance from soma. This panel is identical to Fig. 6 D, but shown again for easy reference. B, the resonance frequency of the transmembrane currents of each cellular compartment is calculated for the same simulation as in A, and superimposed on the cellular morphology, using the colour coding from A. C, same as B but for the membrane potential. D, the resonance frequency of the LFP mode (the most commonly occurring resonance frequency of the LFP in the probed region, red curve), the somatic transmembrane currents (black curve) and the somatic membrane potential (grey curve), as a function of different scalings of the quasi‐active conductance strength, ${\overline{g}}_w$ (see Methods). The overall spatial distribution of the quasi‐active conductance, i.e. a 60‐fold linear increase along the apical dendrite, was retained, and A–C correspond to a ${\overline{g}}_w$scaling of 1.