Effects of sleep deprivation on cognitive performance

It has been estimated that over 20% of adults suffer from some form of sleep deprivation. Insomnia and sleep deprivation are common symptoms of depression, and can be an indication of other mental disorders. The consequences of not getting enough sleep could have dire results, not only to the health, cognition, energy level and the mood of the person, but also to those around them. Sleep deprivation increases the risk of human-error related accidents, especially with vigilance-based tasks involving technology.