Figure 10

The cortical pyramidal neurons encode digital spikes in an economical way. The plot shows the comparison of the energetic barriers for the soma and axon to fire spikes induced by the different durations of synaptic inputs. The values of energetic barriers are calculated by multiplication of threshold and refractory period. These values at the soma are low by giving long-time pulses (red symbols) and the values at the axon are low by short ones (blues).