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Spatial transmembrane voltage profiles for extra- and intracellular stimulation computed for Neuron 1. Extracellular stimulation 50 μm above the soma (A, C) with cathodic threshold currents. Corresponding intracellular anodic threshold current cases at the right side (B, D). Voltage along the neural axis at the end of a 100 μs stimulation pulse (A, B) and in ten advancing 100 μs time steps for a 1 ms stimulation pulse (C, D).
