Figure 1From: Axon initial segment potassium channel density in cortical neuronsA. The bar graph shows peak K+ conductance density recorded in axon initial segment of cells (16 recording axons for RS pyramidal cell, 11 for FS interneuron) by outside-out axon patch recording technique. B. Summary of the results from partially blocking K+ channels. The AP dV/dt ratio is an exponentially decaying function of the spike duration.Back to article page