For his second Cinematheque appearance, Ken Jacobs will present a performance selected from the Nervous System series in which complex illusions of depth and movement are created and manipulated, an area he has concentrated on for many years. “The Nervous System consists, very basically, of two identical prints on two projectors capable of single-frame advance and ‘freeze’ (turning the movie back into a series of closely related slides). The twin prints plod through the projectors, frame-by-frame, in various degrees of synchronization with each other. Most often there’s only a single frame difference. Difference makes for movement and, often, three-dimensional space . . .Tiny shifts in the way the two images overlay each other create radically different visual effects. The throbbing flickering is necessary to create ‘eternalisms’: unfrozen slices of time, sustained movements going nowhere unlike anything in life .. .”— K.J.