In this paper a physical model of the neural membrane that I developed is tested for its ability to account for the details of the action potential spikes observed in squid giant axons, when perfused with sodium- and potassium-free fluids and surrounded by a calcium chloride solution. The near-zero resting potential of these perfused axons is accounted for by the model. The sizes, shapes, and conductances of the spikes observed with a number of different perfusates are also accounted for, when suitable values are assigned to the so-far unmeasured membrane constants that control the model properties. The three papers comprising the series are summarized at the end of this paper.
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