Jeffrey G. Ojemann, M.D., division chief of neurosurgery at UW Medicine, left, talks with former tattoo artist Gary Williams before Williams underwent microsurgery to remove the part of his brain responsible for debilitating seizures. Williams agreed to donate the small bit of healthy tissue that had to be removed during the operation for scientific analysis.  Gary Williams, of Montesano, shows off some of his ink before brain surgery at Harborview Medical Center. Williams hopes the operation will eliminate the hand tremors that forced him to give up his career as a tattoo artist. Gary Williams, of Montesano, before undergoing surgery that he hopes will eliminate his epileptic seizures. An ink mark on his left temple indicates where surgeons will open his skull. Patient Gary Williams’ brain is visible on the monitor at left as Dr. Robert Buckley finishes opening Williams’ skull before neurosurgery. UW Medicine neurosurgeon Dr. Jeffrey G. Ojemann points to abnormal brainwave patterns detected after he placed electrodes on the surface of Gary Williams’ brain to pinpoint the region causing epileptic seizures.  Allen Institute for Brain Science scientist John Mich is in the process...