For Shutter Interface I wanted a sound rhythm and a visual rhythm that would have something to do with high-amplitude alpha waves. I think that’s why it’s such a pleasant film. I did some biofeedback to listen to the sound of my alpha rhythm and I tried to approximate it in the piece. I wanted that sound to fit with the flicker and it does exactly. Every series of frames of colour – which are each from two to eight frames long – is separated by one black frame and the sound is in direct correspondence to those black frames. The black frames are like little punctuation points.
–From a 1976 interview with Linda Cathcart.
Sharits’s work is currently on view at Greene Naftali Gallery.