Computational complexities (“speeds”) of select cell models in the NeuroML database.

See Methods for details. Complexities are relative to the Hodgkin & Huxley model, for which complexity is defined to be 1 HH. Simulations were performed using NEURON CVODE variable step integration method. Top rows: Models with complexities smaller than the Hodgkin & Huxley model (e.g. 0.2 HH means the model was 5 times faster than the Hodgkin & Huxley model). Bottom row: Models more complex than the Hodgkin & Huxley model (e.g. 50 HH means model was 50 times slower than the Hodgkin & Huxley model).