So even when their eyes are closed they can get a sense of whether an artificial arm is extended, or if there is resistance to a grasping motion, making the limb feel less detached and unnatural than an EMG device.
Full daylight comes through the windows, and gently raised, coved ceilings that make the galleries feel much more spacious have concealed illumination by Fisher Marantz Stone for a balance of natural and artificial light that reveals the glory of the paintings.