These are audio phosphenes; ie the goal is to create a sound on specific frequencies that will act on the left and right parts of the brain alternately.
The alternative hearing is to hear in turn through the right ear and then the left ear, on a regular adjustable rhythm
As an audio engineer, I would describe that as cyclically panning between “hard left” and “hard right”.
If you have a stereo track (sound in both left and right channels), you can pan rapidly between left and right by applying this code with the Nyquist Prompt effect: