electrographic

adjective

elec·​tro·​graph·​ic i-ˌlek-trə-ˈgraf-ik 

: relating to, involving, or produced by the use of electrodes implanted directly in living tissue

electrographic stimulation of the brain

electrographically

-i-k(ə-)lē 

adverb

electrography

i-ˌlek-ˈträg-rə-fē 

noun

plural electrographies