Flicker and electroclinical syndromes: the effects of migraine variants in control room situations and on drivers

Concerns the effect on the brain, and in particular on control performance, of flicker, and striped images which can lead to photic driving, microsleep, nausea, disorientation, jamais vu (where am I?) and strange visual perceptions that can be caused when the flicker frequency entrains brain waves, in particular alpha waves. The stimuli are many and will be described, all of which are disturbing in varying degrees especially when the individual is in a state of vulnerability. In this situation, an attack can be precipitated by relatively minor events. In migraine variants there is no headache, so it can be classed as subclinical (not reported to the doctor). Certainly many road traffic accidents can be attributed to migraine variants with microsleep and disorientation amongst other effects