sleep

03/07/2014 - 09:36

Springing clocks forward by an hour this Sunday, traveling across time zones, staring at a computer screen late at night or working the third shift are just a few examples of activities that can disrupt our daily, or circadian, rhythms. These roughly 24-hour cycles influence our physiology and behavior, and they're driven by our body's network of tiny timekeepers. If our daily routines fall out of sync with our body clocks, sleep, metabolic and other disorders can result.

 

03/06/2014 - 09:22

Insomnia is associated with brain activity changes during wakefulness according to a new study. The results showed that the motor cortex of the brains of people with insomnia were surprisingly more neuroplastic- that is more adaptable to change and retraining- than those of good sleepers. This is despite association of insomnia with decreases in concentration and memory.

 

02/03/2014 - 07:10

Adolescents with high media use, reduced sleep and low physical activity comprise an 'invisible-risk' group that has high prevalence of psychiatric symptoms, according to a large international study led by researchers at Karolinska Institutet. The results of the study are published in the February issue of World Psychiatry.

 

01/28/2014 - 09:19

According to a new study by researchers at the University of Montreal, nightmares have greater emotional impact than bad dreams do, and fear is not always a factor. In fact, it is mostly absent in bad dreams and in a third of nightmares. What is felt, instead, is sadness, confusion, guilt, disgust, etc. For their analysis of 253 nightmares and 431 bad dreams, researchers obtained the narratives of nearly 10,000 dreams. “Physical aggression is the most frequently reported theme in nightmares. Moreover, nightmares become so intense they will wake you up. Bad dreams, on the other hand, are especially haunted by interpersonal conflicts,” write Geneviève Robert and Antonio Zadra, psychology researchers at the Université de Montréal, in the last issue of Sleep.

 

10/29/2013 - 13:18

It may seem counterintuitive, but young and middle-aged fibromyalgia patients report worse symptoms and poorer quality of life than older patients, a Mayo Clinic study shows. Fibromyalgia most often strikes women. It is characterized by widespread musculoskeletal pain with fatigue, sleep, memory and mood issues. The research, one of several Mayo studies being presented at the American College of Rheumatology annual meeting, suggests the disorder plays out differently among different age groups.

 

09/20/2013 - 07:11

Having evolved to keep time with our planet's rhythms – day and night, light and dark – we are wired at the genetic level to sleep at night and to wake and eat during the day. Research in recent years revealed that genetic and protein feedback loops – or clocks – operate in 24-hour cycles in every human cell. The clocks signal to thousands of genes, many of which speed up our ability to make and use energy from food during the day and turn it down at night.