Low Internal Conductivity of Aplysia Neuron Somata

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Science  23 Jun 1972:
Vol. 176, Issue 4041, pp. 1329-1330
DOI: 10.1126/science.176.4041.1329


The internal conductivity of Aplysia neuron somata was measured by passing constant current pulses across a calibrated four-electrode array. The intracellular medium is less than one-tenth as conductive as seawater. The low conductivity probably results from structured cell water since ions are present in quantity and do not appear to be bound.