Renault Twingo previous engine from the Renault 5. Alongside the new engine came the Twingo Matic model, equipped with a 3-speed automatic gearbox. Also, various improvements were made including the addition of a third brake light. Two years later, the Twingo underwent its first major restyling revisions to the interior and dashboard. The front and rear lights were revised, and front orange indicator lights were merged into the headlamp housing. Two months later, the top of the range Twingo Initiale model launched. In September 2000, the Twingo underwent its second major restyling. Additions included larger 14" wheels, revised door trims with larger
Quantitative models of the action potential that again, there are only two time-dependent variables: the transmembrane voltage "V" and the potassium gate probability "n". The bursting, entrainment and other mathematical properties of this model have been studied in detail. The simplest models of the action potential are the "flush and fill" models (also called "integrate-and-fire" models), in which the input signal is summed (the "fill" phase) until it reaches a threshold, firing a pulse and resetting the summation to zero (the "flush" phase). All of these models are capable of exhibiting entrainment, which is commonly observed in nervous systems. Whereas the above models simulate the transmembrane