Unformatted text preview: y similar. In fact you can combine the two and derive the magnitude of the chemical force as a function of the equilibrium potential (Eion). You do this by rearranging equation 1 and solving for RT/F *ln([Iout]/[Iin]) Eq. 2c |Fchemical| = RT/F *|ln([Ion]out/[Ion]in| = |z * Eion| The equation for the magnitude of the electrical force driving an ion through the CM is Eq. 3 |Felectrical| = |z*V| The equation for the net force driving an ion through the CM is Eq. 4a Fnet = Fchemical + Felectrical
This is vector notation remembering to take into account the direction of the forces (arrows in lecture) You can subst...
View Full Document
- Fall '08
- Neurobiology, Ion, Eq., Walther Nernst, goldman equation