細胞外電位と細胞内電位の微分波形との関係

概要

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Intracellular and extracellular potentials from one cell that spontaneously discharged in the Aplysia abdominal ganglion (R10, 11, 12, L10, 12, 13) were recorded simultaneously and summarized as follows: 1. The amplitude of intracellular action potential was 50-70mV and the amplitude of extracellular potential was about 0.3mV. 2. The pattern of extracellular action potential was similar to the differential pattern of intracellular action potential. 3. In the time course, there was a time lag between the pattern of extracellular action potential and differential pattern of intracellular action potential. It became clear that this time lag depended upon the time constant in the electrical circuit. 4. From the above results, we concluded that the intracellular action potential was differentiated by the electrical circuit in the cell membrane and shown as extracellular action potential. 5. The hypothesis of Inomata et al. was supported by the results.
北海道医療大学の論文
2005-12-30