Inscrit le: 19 Avr 2018
Moyenne de points: 1,00
|Posté le: Jeu 7 Juin - 08:57 (2018) Sujet du message: Ramiro Funes Mori World Cup Jersey
|WASHINGTON Thomas Vermaelen Coupe du monde Maillot , June 5 (Xinhua) -- U.S. researchers said Thursday they have found important physical evidence that sleep helps consolidate and strengthen new memories.
In a study published in the U.S. journal Science, researchers at New York University showed for the first time that sleep after learning encourages the growth of dendritic spines, the tiny protrusions from brain cells that connect to other brain cells and facilitate the passage of information across synapses, the junctions at which brain cells meet.
Moreover Jordan Lukaku Coupe du monde Maillot , the activity of brain cells during deep sleep called slow-wave sleep after learning is critical for such growth.
"We've known for a long time that sleep plays an important role in learning and memory. If you don't sleep well you won't learn well," senior investigator Wen-Biao Gan, professor of neuroscience and physiology of the university, said.
"But what's the underlying physical mechanism responsible for this phenomenon? Here we've shown how sleep helps neurons form very specific connections on dendritic branches that may facilitate long-term memory Thibaut Courtois Coupe du monde Maillot ," Gan said.
Gan and colleagues employed mice genetically engineered to express a fluorescent protein in neurons.
Using a special laser-scanning microscope that illuminates the glowing fluorescent proteins in the motor cortex, they were then able to track and image the growth of dendritic spines along individual branches of dendrites before and after mice learned to balance on a spin rod.
They trained two sets of mice: one trained on the spinning rod for an hour and then slept for 7 hours; the second trained for the same period of time on the rod but stayed awake for 7 hours.
The researchers found that the sleep-deprived mice experienced significantly less dendritic spine growth than the well-rested mice.
Furthermore, they found that the type of task learned determined which dendritic branches spines would grow. Running forward on the spinning rod, for instance Adnan Januzaj Belgique Maillot , produced spine growth on different dendritic branches than running backward on the rod, suggesting that learning specific tasks causes specific structural changes in the brain.
"Now we know that when we learn something new, a neuron will grow new connections on a specific branch," said Gan. "Imagine a tree that grows leaves (spines) on one branch but not another branch. When we learn something new Christian Kabasele Belgique Maillot , it's like we're sprouting leaves on a specific branch."
The researchers also showed that brain cells in a brain region called motor cortex that activate when mice learn a task reactivate during slow-wave deep sleep.
Disrupting this process prevents dendritic spine growth, Gan said. Their findings offer an important insight into the functional role of neuronal replay -- the process by which the sleeping brain rehearses tasks learned during the day -- observed in the motor cortex.
"Our data suggest that neuronal reactivation during sleep is quite important for growing specific connections within the motor cortex," Gan said.
"The findings are especially important for children," he said. "Sacrificing sleep to study only causes significantly less dendritic spine Laurent Ciman Belgique Maillot , thus you will not be able to remember what you have learned."
Hotels Angel brings you the best hotel package deals that will leave you with a lot of surprises for sure. Holidaying in India has never been the same now. There is a lot of difference how you book for hotel accommodation in the past and now. That difference is made by Hotels Angel, your best booking agency. Our online booking system is so feature oriented that you can ensure your bookings readily. Besides, there is also provision for checking hotel information such as nearness to the airport and other amenities that are offered. Believe it or not! All these services are offered by us free of cost.
Hotel reservation is a hectic process as one has to search the best hotels in India. Then, spending time dedicatedly over the Internet Nacer Chadli Belgique Maillot , trying to find out sources that can offer such information is a different ball game altogether. Situations that you may or may not get the required information is highly speculative. Even if you find the information you require, what you get is a half baked one. However, with Hotels Angel, you can can now keep a tab on these problems. Realize hotel reservations in real time is our motto too regarding the booking facility we provide to travelers. And for regular travelers to India Laurent Depoitre Belgique Maillot , this feature benefits the most.
All the hotels in India are reasonably priced corresponding to the services they provide. Considering the fact that Hotels Angel, your dedicated travel operator for India, serve you free of cost, you can have the last laugh. Explore what a diverse range of advantages we let our dedicated customers can take being with us. Be it hotel bookings or finding out details about a hotel. We promote instant facilities regarding hotel booking system. You can book as many hotels as you can as per your requirement. Either you are attending a personal party or a business meeting Dedryck Boyata Belgique Maillot , we have information about all such hotels that accept bookings readily and we confirm you the rest.
When irresistible deals offered by hotels is the order of the day, how can your best travel agency, Hotels Angel, be behind in letting you to take advantage of such offers. In the past Mousa Dembele Belgique Maillot , we have secured bookings for numerous customers who either came to India for holidaying or regular travellers. As for the present, we are dedicated in providing latest information about the best deals offered by premium hotels in India. The list includes star hotels on one hand and suite hotels on the other hand. Secure your bookings being with us. We concentrate on our business and this is providing you our services regarding hotel bookings online, anytime you want and from anywhere you are.
Looking for luxury hotel deals in India? Opt for. Cheap Jerseys Cheap MLB Hoodies Online Cheap College Hoodies Free Shipping Cheap Soccer Jerseys From China Cheap Authentic NHL Jerseys Cheap Authentic NFL Jerseys Cheap Soccer Jerseys Free Shipping Wholesale Jerseys From China Wholesale Adidas NHL Jerseys Wholesale NFL Jerseys