Figure 5
From: Dependence and Homeostasis of Membrane Impedance on Cell Morphology in Cultured Hippocampal Neurons
Functional role of membrane impedance. (a) Impedance magnitude profiles of patterned (red) and unpatterned (black) neurons at 16 DIV. (b) Voltage responses of the same neurons whose impedance profiles were presented in (a). The same input was applied to both neurons. (c) A schematic illustration of the effect of the membrane impedance on the coincidence detection property: Input neurons (A) send different pulse trains to a high-impedance (B) and low-impedance (C) neurons. Neuron B requires only three coincident inputs to fire, while Neuron C requires five coincident inputs. Although the influence of individual synapses is smaller in Neuron C, the larger dendritic field would permit the neuron to receive synaptic inputs from more neurons than Neuron B.
