Gating currents associated with sodium and calcium currents in an Aplysia neuron.
In a voltage-clamped aplysia neuron (R15), depolarization beyond -30 millivolts produces an inward sodium current. Depolarization beyond -10 millivolts produces an additional inward calcium current with slower kinetics than the sodium current. When these ionic currents have been suppressed and capacitive currents subtracted out, a small outward displacement current can be seen with depolarizations beyond -30 millivolts. An additional, slower displacement current is seen with depolarizations beyond -10 millivolts. The currents have an exponential decay with an increase in rate per 10 degrees C increase in temperature of about 3 and are thought to be sodium and calcium gating currents.
D000818:Animals; D001692:Biological Transport; D002118:Calcium / Q000378:metabolism*; D066298:In Vitro Techniques; D007700:Kinetics; D008564:Membrane Potentials; D008974:Mollusca; D009474:Neurons / Q000378:metabolism / Q000502:physiology*; D012964:Sodium / Q000378:metabolism*; D013696:Temperature
D012964:Sodium; D002118:Calcium