Flashing light effect

Degen J, Uebele A, Retze A, et al A novel airlift photobioreactor with baffles for improved hght utilization through the flashing light effect, J Biotechnol 92 89-94, 2001. 

Another instructive example of the relevance of ambient stimuli to the nature of the effect of serotonergic manipulations on locomotor activity is provided by Brody s (27) study of PCPA. He monitored the locomotion of vehicle- and PCPA-treated rats in an open field to which the animals had been previously familiarized. Animals were tested either with or without additional stimulation in the form of flashing lights and 90 dB(A) noise bursts. Without stimulation, PCPA-treated rats were less active than controls with stimulation, PCPA-treated rats were more active. The results of these and other such studies indicate that the central serotonergic systems may not directly modulate the level of locomotor activity per se, but they may profoundly influence locomotor activity by virtue of their effects on the sensory responsivity of the animal to a wide variety of environmental stimuli. 

The most common visual side effects are blurring, dimness of vision, flickering or flashing lights, color vision (yellow, green, red, and white), cycloplegia, and diplopia. 

Typically means an anditory alarm (e.g., siren) or visual indication (e.g., flashing lights) to warn of a hazard aspect occurring over a wide area (e.g., toxic gas release in a chemical plant tsnnami approach, etc.) and the need for immediate actions to prevent injury or damage (e.g., evacuation, shelter-in-place, etc.). The effectiveness of the signal is dependent on its capability to be observed, the population s awareness of the signal characteristics, and the actions to be taken upon its activation. 

Park K-H, Kim D-I, Lee C-G. Effect of flashing light on oxygen production rates in high-density algal cultures.J Microbiol Biotechnol 2000 10 817. 

It should be noted that there is no research to validate the 100 percent effectiveness of alarms and flashing lights. Back up alarms are usually reserved only for counter-balanced forklifts. 

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