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(Solved): Consider the circuit model of the electrode-skin interface below. The A(g)/(A)gCl electrode has a ha ...
Consider the circuit model of the electrode-skin interface below.
The A(g)/(A)gCl electrode has a half cell potential of +223 mV , and the ion concentrations in the gel
and epidermis are given in the following table:
The Goldman-Hodgkin-Katz (GHK) equation is given by:
E=(60mV)log_(10)((P_(K)[K^(+)]_(o)+P_(Na)[Na^(+)]_(o)+P_(Cl)[Cl^(-)]_(i))/(P_(K)[K^(+)]_(i)+P_(Na)[Na^(+)]_(i)+P_(Cl)[Cl^(-)]_(o)))
aNa^(+),K^(+)and Cl^(-)across the gel-epidermis interface.
bE_(sc) across the gel-epidermis interface, assuming the boundary
separating the epidermis from the gel is equally permeable to all ion types.
cZ(j\omega ) of the electrode-skin interface, based on
the AC equivalent circuit. Find the electrode-skin interface impedance in the two limiting cases
of very low frequency and very high frequency.