I think that they mean.....
Wouldnt it be better to place suctioncaps in to the brain to capture the electricity. Instead of cut the brain, and cause unwanted damage. When if you capture the current like a net. You could prehaps phase it out before it went to a further part of the brain.
Like with the eeg the electrodes flow to the computer through electrodes. Im probably making no sense here, like trying to earth you instead of make you static.