Disclosed are implementations, including a method for video presentation to cause controllable stimulation of a subject's eyes, that includes preparing a video presentation comprising successive frames of moving images, and, for one or more of the successive frames, selecting a target feature(s) represented in the moving images, with the moving images further comprising one or more background features, the target feature causing stimulation of one of a first eye or a second eye of the subject. For at least some of the frames in which the target feature(s) appears, the method also includes controlling a first contrast characteristic of the target feature(s) to form a first portion of the moving images, and controlling a second contrast characteristic of the one or more background features to form a second portion of the moving images. The method further includes providing the prepared video presentation.
