Big shoutout to my co-authors Richard Schweitzer, Éric Castet, Tamara Watson, & @svenohl.bsky.social. I want to thank more people than I can list here (see screenshot). And we are grateful for continued funding from @dfg.de , @erc.europa.eu , @daadworldwide.bsky.social over the past few years! 15/15

We show that a parsimonious model of early visual processing captures both the phenomenology of and sensitivity to high-speed stimulus perception in our task. It gives rise to perceptual omission of saccade-induced motion while maintaining sensitivity to high-speed motion.13/n

… instead, visibility of continuous motion depends on a conjunction of the speed, duration, and amplitude of the movement and is exactly proportional to the main sequence of saccades. Plotting speed and duration thresholds as a function of amplitude shows this relationship. 9/n

We used @vpixx.bsky.social's PROPixx for high-speed video projection to reproduce the lawful saccadic conjunction of speed/duration/amplitude in a moving stimulus, and assessed observers’ ability to see the stimulus’ motion by asking them if the stimulus moved with an up- vs downwards curvature. 7/n

The kinematic law that governs saccade-induced motion on the retina is called the main sequence, and describes the relation of saccade speed and duration to the movement's amplitude: both peak velocity and duration of the movement increase systematically with the distance the eyes travel. 4/n

Saccadic eye movements incessantly impose rapid motion on the retina. We hypothesized that this abundance of input may shape if and how we perceive high-speed motion even during fixation. Importantly, the kinematics of saccade-imposed retinal motion are very systematic. In fact, they are lawful.