11.   As the gathering wound to a close Friday, sleep deprivation was apparent on the faces of the delegates and nongovernmental observers.

12.   Aside from the obvious fatigue and irritability that sustained sleep deprivation can cause, the insomnia has destructive psychological effects.

13.   Because she elected to bottle feed the infant, her mother is able to take him in her room every other night so sleep deprivation is shared.

14.   Between beer, cigarettes and sleep deprivation, his health deteriorated to the point that he began losing his teeth.

15.   A combination of sleep deprivation and raging hormones robs them of their senses.

16.   But after narrowly missing an oncoming car on her way home from work, she realized sleep deprivation had jeopardized her judgment and was compromising her health.

17.   But now, it is the severity and prevalence of their sleep deprivation that is causing a growing concern among researchers, educators, parents and even teen-agers themselves.

18.   But officials said other, nonviolent forms of coercion were being used, including sleep deprivation and a variety of psychological techniques that are meant to inspire fear.

19.   But she can imagine how hard it might be for older grandparents dealing with middle-of-the-night feedings and sleep deprivation.

20.   But that may also just be an effect of sleep deprivation.