Table 1.

The most important hardware model parameters, the type of physical quantity used for their implementation, their configurability and an estimation of uncertainty. The first four columns show their typical biological interpretation and the resulting value ranges. The translation between both domains depends on the chosen speedup and the desired biological parameter value ranges. The given estimations (some being educated guesses) of configuration uncertainty reflect the current state of available methods to measure, to adjust or to calibrate the values, and may not necessarily reflect hardware limitations. The uncertainty of E_e is load-dependent, the relation is not yet sufficiently analyzed.

Biological Interpretation				Hardware parameter implementation
Param	Unit	Min	Max	Physical quantity	Configurable	Estimation of uncertainty (%)
Cm	nF	0.2	0.2	Capacitance	No	10
Gl	nS	20	40	Current	Yes	10
El	mV	−80	−55	Voltage	Yes	2
Ei	mV	−80	−55	Voltage	Yes	2
Ee	mV	−80	20	Voltage	Yes	Unknown
Vth	mV	−80	−55	Voltage	Yes	5
Vreset	mV	−80	−55	Voltage	Yes	10
τsyn	ms	30	50	Current	Yes	25
gmax	nS	1	100	Current	Yes	25