A comfortable brain-interface to video displays

Recent progress in and the popularization of computer graphics mean we now see many images that are composed artificially and include a lot of flicker to add to their impact. These highly flickering images, however, cause fatigue that affects our brain rather than our eyes. This is a content-dependent video display terminal (VDT) hazard that is unlike conventional VDT hazards. This paper shows that content-dependent VDT hazards are a genuine threat based on physiological evidence concerning the temporal response of visual cortical cells, and proposes a quantitative measure to estimate the risk of the hazard, and also provides an adaptive filtering method to reduce the risk. Images from the critical part of the “Pocket Monsters” TV animation episode were studied to confirm the effectiveness of this method.