Problem:
An excised, active nerve trunk server as a bioelectric source located on the axis of circular cylindrical volume conductor. Field potentials are recorded at various radial distances from the nerve trunk from an appropriate electrode assembly to an amplifier.
Required:
Quetion 1: Describe the behavior of the field potential with increasing radial distance from the nerve(angle and axial distance are fixed).
Question 2: Describe the effect of increasing the specific resistivity p of the bathing medium on the magitude of the field potential, explanin how this change in p might be accomplished experimentally.
Question 3: In what manner would changing the radius of the surrounding volume-conductor affect the magnitude and waveshape of the extracellular field potential
Question 4: when can a volume conductor of finite dimensions be considered an essentially "infinite" volume conductor?
Please provide discription of all the answers.