[Verified Answer]: 20 pts10-20mm apart and placed near the…

20 pts10-20mm apart and placed near the nerve, and (b) monopolar where the cathode is placed near the nerve and the anode is placed far away. In the figure below, the main facial nerves are shown labeled N 1 to N 5 . Electrodes E1,E2, E 3 are placed close to the nerves, and electrode E 0 is placed behind the neck. In monopolar configuration, each of E1,E2,E3 can be a cathode and E 0 the anode. In bipolar mode pairs of electrodes, E1-E2,E2-E3 or E3-E1 are connected as anode and cathode. The successful stimulation of any of the nerves can be seen by activity in the respective innervated muscles. What are the advantages and disadvantages of these two configurations? If it is necessary to distinguish nerve N3 from nerve N4, which of the electrode configuration will be best? Explain with diagrams showing probable current paths.