background preloader

To make memories, new neurons must erase older ones

To make memories, new neurons must erase older ones
Short-term memory may depend in a surprising way on the ability of newly formed neurons to erase older connections. That's the conclusion of a report in the November 13th issue of the journal Cell, a Cell Press publication, that provides some of the first evidence in mice and rats that new neurons sprouted in the hippocampus cause the decay of short-term fear memories in that brain region, without an overall memory loss. The researchers led by Kaoru Inokuchi of The University of Toyama in Japan say the discovery shows a more important role than many would have anticipated for the erasure of memories. They propose that the birth of new neurons promotes the gradual loss of memory traces from the hippocampus as those memories are transferred elsewhere in the brain for permanent storage. Although they examined this process only in the context of fear memory, Inokuchi says he "thinks all memories that are initially stored in the hippocampus are influenced by this process."

Welcome to WWW.ZOE7.COM_ Consciousness, Hallucinogens, Hyperspace and Beyond Neuroscience Neuroscience is the scientific study of the nervous system.[1] Traditionally, neuroscience has been seen as a branch of biology. However, it is currently an interdisciplinary science that collaborates with other fields such as chemistry, computer science, engineering, linguistics, mathematics, medicine and allied disciplines, philosophy, physics, and psychology. It also exerts influence on other fields, such as neuroeducation[2] and neurolaw. Because of the increasing number of scientists who study the nervous system, several prominent neuroscience organizations have been formed to provide a forum to all neuroscientists and educators. History[edit] The study of the nervous system dates back to ancient Egypt. Early views on the function of the brain regarded it to be a "cranial stuffing" of sorts. The view that the heart was the source of consciousness was not challenged until the time of the Greek physician Hippocrates. Modern neuroscience[edit] Human nervous system

5 Best Screencast Software For Creating YouTube Videos Screencast applications help users create video tutorials and training courses by capturing desktop content. Such tools often provide numerous handy options for adding voice and music to recorded videos, as well as to annotate video frames to provide useful information to the viewer. I myself make use of such applications to provide my readers with video guides which are often added to some of the posts at WML Cloud . These screencasts are also uploaded to the official WML Cloud YouTube Channel , as well as to our channels at Vimeo and DailyMotion . If you are looking for a good free tool to create screencasts for educational, business or personal use, then here are a few suggestions for you. BB FlashBack Express This is a free Windows tool for creating screencasts . Some of the main features of this application are as follows: You can record your desktop, along with the output from your mike and webcam. You can save files in Flash or AVI format. Windows XP Windows Vista Windows 7 Ezvid

The Cloud and Collaboration Paper written as a contribution to the Ars Electronica symposium on Cloud Intelligence. Let's take as a starting point the discussion of 'cloud intelligence' on the conference website: In the cloud of connections, we each become social neurons, mimicking the biological human brain but on a giant scale. This idea of the connected world as a global brain is not new, nor surprising. Peter Russell's The Global Brain explicitly makes the connection. We have already noted that there are, very approximately, the same number of nerve cells in a human brain as there are human minds on the planet. According to Russell, the brain develops in two phases. Tom Stonier writes, In principle, this process does not differ from the evolution of primitive nervous systems into advanced mammalian brains... each node, rather than being a neuron, is a person comprising trillions of neurons ... coupled ... to their personal computers... We think together but remain independent in our identity. 80+1. (2008).

02.22.2010 - An afternoon nap markedly boosts the brain’s learning capacity If you see a student dozing in the library or a co-worker catching 40 winks in her cubicle, don’t roll your eyes. New research from the University of California, Berkeley, shows that an hour’s nap can dramatically boost and restore your brain power. Indeed, the findings suggest that a biphasic sleep schedule not only refreshes the mind, but can make you smarter. Students who napped (green column) did markedly better in memorizing tests than their no-nap counterparts. Conversely, the more hours we spend awake, the more sluggish our minds become, according to the findings. “Sleep not only rights the wrong of prolonged wakefulness but, at a neurocognitive level, it moves you beyond where you were before you took a nap,” said Matthew Walker, an assistant professor of psychology at UC Berkeley and the lead investigator of these studies. In the recent UC Berkeley sleep study, 39 healthy young adults were divided into two groups — nap and no-nap.

#31: Autism: One Label, Many Diseases | Mental Health People with autism are regularly lumped together and treated as a single group. But the world’s largest genetic study of the condition “shows that autism is many different diseases,” says Stanley Nelson, a professor of genetics and psychiatry at UCLA who collaborated on the investigation. “That insight should greatly enlighten how we think about autism and attempt to treat it.” The study, conducted by a global consortium of 120 scientists, compared the genes of more than 1,000 autistic children with those of 1,300 youngsters unaffected by the disorder. As the researchers reported last July, the mutations associated with autism fall all over the map. “If 100 different kids with autism walked into a clinic,” Nelson says, “chances are they’d have 100 different genetic aberrations.” Most of those aberrations occur in genes that affect the development and functioning of the brain.

Get Latest Discount Offers For Android And iOS Apps With AppZapp AppZapp is a cross-platform application for Android and iOS devices which provides users with information regarding the latest application discounts for Android or iOS apps. AppZapp informs users about price drops by push notifications or via email. There are hundreds of price drops everyday for applications on Google Play and for iOS devices (such as iPhone, iPod Touch and iPad), however, it can be hard to keep track or even find out about such discounts, some of which may be for a limited time frame.With AppZapp you can easily find such discounts within an easy to sort interface. AppZapp also provides the utility to sync data with your desktop and can also be used to find the latest apps to be released in the Android or iOS apps store. App Lists AppZapp displays the current total value of your Apps (in “My AppZapp”) and provides price alerts from your purchased apps. Android Beta Version Sync Tool The AppZapp sync tool can be download for Windows or Mac OS X. Demo Related Posts:

Brain innately separates living and non-living objects for proce For unknown reasons, the human brain distinctly separates the handling of images of living things from images of non-living things, processing each image type in a different area of the brain. For years, many scientists have assumed the brain segregated visual information in this manner to optimize processing the images themselves, but new research shows that even in people who have been blind since birth the brain still separates the concepts of living and non-living objects. The research, published in today's issue of Neuron, implies that the brain categorizes objects based on the different types of subsequent consideration they demand—such as whether an object is edible, or is a landmark on the way home, or is a predator to run from. They are not categorized entirely by their appearance. "When we looked at the MRI scans, it was pretty clear that blind people and sighted people were dividing up living and non-living processing in the same way," says Mahon. Story source

The Ten Most Revealing Psych Experiments Psychology is the study of the human mind and mental processes in relation to human behaviors - human nature. Due to its subject matter, psychology is not considered a 'hard' science, even though psychologists do experiment and publish their findings in respected journals. Some of the experiments psychologists have conducted over the years reveal things about the way we humans think and behave that we might not want to embrace, but which can at least help keep us humble. That's something. 1. 'Lord of the Flies': Social Identity Theory The Robbers Cave Experiment is a classic social psychology experiment conducted with two groups of 11-year old boys at a state park in Oklahoma, and demonstrates just how easily an exclusive group identity is adopted and how quickly the group can degenerate into prejudice and antagonism toward outsiders. Researcher Muzafer Sherif actually conducted a series of 3 experiments. 2. 3. 4. 5. 6. 7. 8. 9. 10. Turns out that it's all about framing.

Bruce Eckel's MindView, Inc: Book Download Sites These are the independent sites who have offered to mirror the books Thinking in C++, 2nd Edition, Thinking in Java, 1st and 2nd Editions, and Thinking in Patterns, all of which include source code. Make sure you check the contents of the sites against the Master Download Site (below); there is no guarantee that the mirror sites have been updated to include the most recent files. If you find a dead link, please email it to me. The current versions of each book are shown on the Master Download Site (below). Click here if you want to mirror the books on your site We regularly clean the dead sites from this page. Master Download Site Administered by MindView.

Download Weather Now App For iPhone With Interactive 3D Globe When looking for a weather apps users not only want an accurate source for weather forecasts but also like applications and gadgets with a visually appealing UI. Weather Now is an iOS app for iPhone, iPad and iPod Touch which displays weather information in a gorgeous UI with an interactive 3D globe. Like all weather apps, you will require allowing this app to access your current location. In case you do not wish to acquire local weather forecasts, simply skip adding your city and use the search bar in the Cities section to look for weather information for a specific location. The 3D globe of this app displays weather information for all added locations and shows the current time in all parts of the world. Hitting the thermometer icon next to a city’s name displays a badge with the city’s weather details. Download Weather Now For iPhone 5 [Free] Download Weather Now Pro [Paid] You May Also Like: Related Posts:

Artificial Neural Network Lab: Java applets and GIF-animation Artificial Neural Network Lab on the Web (To Japanese version) Demonstrations on artificial neural networks using java-applets and GIF-animations Bayesian Self-Organizing Maps (BSOM) The figures show an example of probability density distribution estimated by BSOM. Other Neural Networks Applets for Neural Networks and Artificial Life Link collection for pages using applets for the demonstration of neural networks and artificial life. My research and articles Akio Utsugi (home page)