DETROIT -- The gray probe, looking like a Nintendo Wii controller, is draped around Zach Zenner's neck. He puts the instrument there for maneuverability -- something he has done almost every morning since he started working with ultrasound machines earlier this year. He wants to get this right.
He spreads electrode gel on the machine’s tabletop platform and lines up the anesthetized rat he has been studying the past few days. Zenner turns the lights off and the machine on in Room LL362 of the John D. Dingell Veterans Affairs Medical Center. He can read the screen better this way.