The refresh rate of overhead projectors may affect the perception of fast moving objects: a modelling study

TL;DR

This study models how the refresh rate of overhead projectors can influence the perception of fast-moving objects, potentially affecting visual perception experiments at multiple neural levels.

Contribution

It introduces a mathematical model showing the impact of projector refresh rate on visual perception of fast motion.

Findings

Refresh rate affects perception of fast objects

Implications for visual system experiments

Potential influence on psychophysical results

Abstract

Using simulation and a simple mathematical argument we argue that the refresh rate of overhead projectors, used in experiments on the visual system, may impact the perception of fast moving objects at the retinal and cortical level (V1), and thereby at the level of psychophysics.