Tag Archives: sleep deprivation

this pressed: 10 Shocking Things About Ebola : Discovery News

Early symptoms of Ebola can appear harmless — fever, headache, aches, chills and sore throat. They could be the stuff of a normal illness.

But as the virus progresses, victims will experience nausea and vomiting, diarrhea, rash, chest pain and cough, weight loss and bleeding. In some cases, organs will shut down and cause unstoppable bleeding.

In the last stages of the disease, in a process known as a cytokine storm, the immune system goes haywire and inflammatory molecules called cytokines attack the body’s own tissue. Technically, then, it’s not the virus that kills people but instead their own immune systems ultimately turn against them.

Show here is Dr. Kent Brantly, a doctor who treated patients in Liberia before contracting the virus himself. Fortunately, he survived.

Samaritan’s Purse

via 10 Shocking Things About Ebola : Discovery News.

Sleep Promotes Learning through Synapse Formation (there are so many studies arriving to other conclusions: Why?)

Sleep Promotes Learning through Synapse Formation

Sleep has long been known to play a vital role in the learning process, but the precise science behind it was not fully understood. Using advanced microscopy, researchers were able to observe the formation of new synapses, or connections between nerve cells, in the brain and found that sleep-deprived subjects form fewer new connections than those allowed to sleep properly. Even intense, extended training on a task cannot make up for sleep deprivation. The findings suggest that sleep promotes the formation of new synaptic connections, thereby contributing to learning and memory formation. More… Discuss

Just a thought: “What”s known for thousands of years, is as true now than it was in the early history of mankind…who pays for all the sensational studies done to prove the mumankind commun sense wrong? and why?” (George B)

Enhanced by Zemanta


Skipping Sleep Could Cause Brain Damage

Burning the candle at both ends can lead to more than a few sluggish, cranky days; it may actually result in permanent brain damage. Just three days of sleep deprivation caused mice to lose a quarter of the nerve cells associated with alertness in a part of the brain stem called the locus ceruleus. If this turns out to be the case in humans as well, it will debunk the long-held notion that getting “catch-up sleep” can make up for night after night of missed sleep. To study this further, researchers plan to examine the brains of deceased shift workers for evidence of this sort of damage. More…Discuss

Enhanced by Zemanta


Sleep-Deprived Surgeons No More Error-Prone

Studies on the effects of fatigue on surgical outcomes have had mixed results, but one recent study indicates that missed sleep does not make surgeons more error-prone. The risk of complications from gallbladder removal surgery was found to be the same for patients whose surgeons had been up all night performing emergency surgery as for those whose surgeons were well rested. Complication rates were fairly low across the board. Researchers say the findings should ease the concerns of people requiring surgery. More…Discuss



Genetic Consequences of Sacrificing Sleep

Imagine a future in which sleep has been made obsolete. It may be improbable, but it is not necessarily impossible. A lack of adequate sleep can cause a host of health issues, as illustrated by a recent study showing that just a week of shortened sleep alters theexpression of more than 700 genes, including those involved in stress and immuneresponses. Still, if researchers are able to uncover all of the physiological changes that occur as a result of sleep deprivation, they could, theoretically, develop a drug to counter these effects and thereby eliminate the need for sleep. More… Discuss