 |
|
Sleep enforces the temporal sequence in memory
April 18, 2007We have usually quite strong memories of past events like an exciting holiday or a jolly birthday party. However it is not clear how the brain keeps track of the temporal sequence in such memories: did Paul spill a glass of wine before or after Mary left the party?
Previous findings from a research group headed by Jan Born at the University of Lübeck have confirmed the widely held view that long-term memories are formed particularly during sleep, and that this process relies on the brain replaying recently encoded experiences during the night. The same research group now provides evidence that sleep not only strengthens the content of a memory but also the particular order in which they were experienced, probably by a replay of the experiences in "forward" direction.
Students were asked to learn triplets of words presented one after the other. Afterwards they slept, whereas in a control condition no sleep was allowed. Later, recall was tested by presenting one word and asking which one came before and which one came after during learning. Sleep was found to enhance word recall, but only when the students were asked to reproduce the learned words in forward direction.
This finding shows that sleep associated consolidation of memories enforces the temporal structure of the memorized episode that otherwise might be blurred to a timeless puzzle of experiences.
Public Library of Science
This finding shows that sleep associated consolidation of memories enforces the temporal structure of the memorized episode that otherwise might be blurred to a timeless puzzle of experiences.
Public Library of Science
Memories News and Current Memories Events RSSNew Study Shows False Memories Affect Behavior
Do you know someone who claims to remember their first day of kindergarten? Or a trip they took as a toddler? While some people may be able to recall trivial details from the past, laboratory research shows that the human memory can be remarkably fragile and even inventive.
New Speed Record for Magnetic Memories
Fast memory chips such as DRAMs and SRAMs (Dynamic and Static Random Access Memory) commonly used today have one decisive disadvantage: in case of power interruption, they lose their stored information.
Model for Angelman syndrome developed by University of Texas at Austin biologists
A model for studying the genetics of Angelman syndrome, a neurological disorder that causes mental retardation and other symptoms in one out of 15,000 births, has been developed by biologists at The University of Texas at Austin.
Study finds that sleep selectively preserves emotional memories
As poets, songwriters and authors have described, our memories range from misty water-colored recollections to vividly detailed images of the times of our lives.
Halting retrieval of drug-associated memories may prevent addiction relapse
Disrupting the brain's retrieval of drug-associated memories may prevent relapse in drug addiction, according to new research in the August 13 issue of The Journal of Neuroscience.
'Erasing' drug-associated memories may stop drug addiction relapses
'Erasing' drug-associated memories may prevent recovering drug abusers from relapsing, researchers at the University of Cambridge have discovered.
Scientists find elephant memories may hold key to survival
A recent study by the Wildlife Conservation Society and the Zoological Society of London (ZSL) suggests that old female elephants-and perhaps their memories of distant, life-sustaining sources of food and water-may be the key to survival during the worst of times.
Genes may make some people more prone to anxiety
Inborn differences may help explain why trauma gives some people bad memories and others the nightmare of post-traumatic stress. Scientists in Germany and the United States have reported evidence linking genes to anxious behavior. The findings appear in the August issue of Behavioral Neuroscience, published by the American Psychological Association.
Aging impairs the 'replay' of memories during sleep
Aging impairs the consolidation of memories during sleep, a process important in converting new memories into long-term ones.
A hormone that enhances one's memory of happy faces
Oxytocin was originally studied as the "milk let-down factor," i.e., a hormone that was necessary for breast-feeding. However, there is increasing evidence that this hormone also plays an important role in social bonding and maternal behaviors.
More Memories News Articles
 | To Kill a Mockingbird by Harper Lee "When he was nearly thirteen, my brother Jem got his arm badly broken at the elbow.... When enough years had gone by to enable us to look back on them, we sometimes discussed the events leading to his accident. I maintain that the Ewells started it all, but Jem, who was four years my senior, said it started long before that. He said it began the summer Dill came to us, when Dill first gave us the... |
 | Where the Wild Things Are by Maurice Sendak The 1964 Caldecott Medal Winner for the Most Distinguished Picture Book of the Year by Maurice Sendak. Brian O'Doherty of The New York Times said the Mr. Sendak's work "disguised in fantasy, springs from his earliest self, from the vagrant child that lurks in the heart of all of... |
 | The Brain That Changes Itself: Stories of Personal Triumph from the Frontiers of Brain Science (James H. Silberman Books) by Norman Doidge An astonishing new science called neuroplasticity is overthrowing the centuries-old notion that the human brain is immutable. In this revolutionary look at the brain, psychiatrist and psychoanalyst Norman Doidge, M.D., provides an introduction to both the brilliant scientists championing neuroplasticity and the people whose lives they’ve transformed. From stroke patients learning to speak again... |
 | Harold and the Purple Crayon 50th Anniversary Edition (Purple Crayon Books) "One night, after thinking it over for some time, Harold decided to go for a walk in the moonlight." So begins this gentle story that shows just how far your imagination can take you. Armed only with an oversized purple crayon, young Harold draws himself a landscape full of beauty and excitement. But this is no hare-brained, impulsive flight of fantasy. Cherubic, round-headed Harold conducts his... |
 | The Giving Tree To say that this particular apple tree is a "giving tree" is an understatement. In Shel Silverstein's popular tale of few words and simple line drawings, a tree starts out as a leafy playground, shade provider, and apple bearer for a rambunctious little boy. Making the boy happy makes the tree happy, but with time it becomes more challenging for the generous tree to meet his needs. When he asks... |
 | Corduroy Have you ever dreamed of being locked in a department store at night? The endearing story of Corduroy paints a picture of the adventures that might unfold (for a teddy bear at least) in such a situation. When all the shoppers have gone home for the night, Corduroy climbs down from the shelf to look for his missing button. It's a brave new world! He accidentally gets on an elevator that he... |
 | The Memory Keeper's Daughter by Kim Edwards Kim Edwards’s stunning family drama evokes the spirit of Sue Miller and Alice Sebold, articulating every mother’s silent fear: what would happen if you lost your child and she grew up without you? In 1964, when a blizzard forces Dr. David Henry to deliver his own twins, he immediately recognizes that one of them has Down Syndrome and makes a split-second decision that will haunt all their lives... |
 | Making a Good Brain Great: The Amen Clinic Program for Achieving and Sustaining Optimal Mental Performance by Daniel G. Md Amen Daniel Amen, M.D., one of the world’s foremost authorities on the brain, has news for you: your brain is involved in everything you do—learn to care for it properly, and you will be smarter, healthier, and happier in as little as 15 days!You probably run, lift weights, or do yoga to keep your body in great shape; you put on sunscreen and lotions to protect your skin; but chances are... |
 | The 36-Hour Day: A Family Guide to Caring for People with Alzheimer Disease, Other Dementias, and Memory Loss in Later Life (4th Edition) (A Johns Hopkins Press Health Book) by Nancy L. Mace, Peter V. Rabins Revised in 2006 for its twenty-fifth anniversary, this best-selling book is the "bible" for families caring for people with Alzheimer disease, offering comfort and support to millions worldwide. In addition to the practical and compassionate guidance that have made The 36-Hour Day invaluable to caregivers, the fourth edition is the only edition currently available that includes new information on... |
 | The Belly Book: A Nine-Month Journal for You and Your Growing Belly (Potter Style) by Amy Krouse Rosenthal Before you get to meet your baby, you spend a swell (so to speak) nine months getting acquainted with your growing belly. The first pregnancy journal devoted 100% to you and your belly, The Belly Book is organized by trimester and includes pages for “time-lapse” belly photos and ultrasound images, as well as prompts for writing about morning sickness, food cravings, maternity clothes... |
| © 2008 BrightSurf.com |