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In the study, researchers used a genetically modified mouse to determine how the dentate arch interacts with a type of template used to provide the differences between old and new spaces. Scientists believe that a set of neurons called place cells fires a subset of the images for each new location. The next time we see the same space, the same neurons fire. Because we know we've been somewhere before, we don't have to relearn what the surrounding area looks like. However, if we find ourselves in a space similar to one we've seen before, a new but overlapping set of neurons creates a print. When two sets of neurons overlap, we experience a feeling of déjá-vu—a term that comes from French and translates to "I've seen this before." As we age, or with neurodegenerative diseases such as Alzheimer's, differences occur in the formation of unique memories of similar but different places and experiences, leading to problems that plague some older people. ...

Scientists at the Picower Institute for Learning and Memory have discovered a neural mechanism responsible for distinguishing between similar locations, which may explain the feeling of déjá-vu. The study, published in Science, demonstrates how different subregions of the hippocampus cooperate in learning and memory. This discovery has potential for treating memory disorders that affect older adults. Experiments with mice identified how neurons create imprints for new locations, leading to the experience of déjà-vu in situations similar to familiar ones. Scientists from the U.S.-based Picower Institute for Learning and Memory said in a report published online July 7, 2007, in the journal Science that they have, for the first time, identified a neural mechanism that allows us to quickly distinguish between similar but different locations. The discovery helps explain the feeling of déjá-vu. The work could lead to a treatment for memory disorders such as confusion and disorientation that ...

Scientists from the US and China have discovered a way to selectively erase memories in mice using genetic modifications related to the CaMKII protein, which plays a key role in memory. The study, published in the journal Neuron, demonstrates that it is possible to block unwanted memories without damaging other memories. While this technology could open up new therapeutic possibilities, including for people suffering from PTSD, animal experiments are in their early stages and require further study before application in humans. It sounds like science fiction, but scientists claim that it will one day be possible to selectively and safely remove unwanted memories from the brain. American and Chinese researchers claim to have successfully performed this procedure in mice using genetic modification, but they are still a long way from achieving a similar effect in humans. Study co-author Joe Z. Tsien, associate director of the Brain & Behavior Discovery Institute at the Medical College ...

Scientists from Duke University and the University of St. Andrews have published research that explores the concept of invisibility, inspired by Harry Potter's magical cloak. They discovered that using advanced metamaterials can alter the direction of light around objects, rendering them invisible. While these technologies have potential applications in various fields, including military applications, the researchers emphasize that developing practical solutions faces numerous challenges. Despite progress, the scientists admit that the magic of Harry Potter remains beyond their reach. Let's call it "Harry Potter and the Professors of Invisibility." J.K. Rowling fans will likely remember that their favorite little magician can disappear at will. All he has to do is hide under his magical cloak and... he's never heard from again. Last week, a prestigious journal published two reports by scientists who discovered how the same effect could be achieved without breaking...

Scientists at the University of Melbourne have achieved a breakthrough in research on resurrecting extinct species by reviving the genetic code of a Tasmanian tiger in a mouse embryo. The nine-year experiment demonstrates that it is possible to replicate the function of a gene derived from an extinct animal. The researchers emphasize that this technique could open the door to the resurrection of other species, including dinosaurs, provided they have sufficient DNA. While resurrecting an entire species remains a possibility, these achievements could also have biomedical applications. Scientists have revived the genetic code of a Tasmanian tiger by injecting it into a mouse embryo. Researchers hope to bring extinct animal species back to life. Scientists say it may one day be possible to bring dinosaurs back to life after the world's first experiment with the DNA of an extinct Tasmanian tiger. In a nine-year experiment led by zoologists Andrew Pasek and Marilyn Renfree of the Univers...

Scientists at Eötvös Loránd University in Hungary have developed a groundbreaking computer program that can "translate" dog barks. Analyzing over 6,000 barks from 14 Hungarian Shepherd Dogs in various situations, the researchers found that the computer was able to recognize meanings such as "stranger," "fight," and "play." Although the identification accuracy was 43 percent, it still exceeded human performance. The team plans further research to understand the differences in the barking "languages" of different dog breeds. What would a dog say if it could talk? "Stranger," "fight," "walk," "loneliness," "ball," and "play," say scientists who have developed a computer program that translates dog barks. The program analyzed over 6,000 barks from 14 Hungarian Shepherd Dogs, recorded in six different situations. In a series of tests, a team of scientists from Hungary's Eötvös L...

Scientists have made a remarkable discovery in the Indonesian mountain jungle, where they have stumbled upon a "Lost World" teeming with new species of fauna and flora. During an expedition to Mount Foja, a team of 25 researchers discovered dozens of exotic birds, butterflies, frogs, and over 550 new plants. Among the discoveries are a new species of honeyeater, long-haired echidnas, and many other fascinating organisms. The research could provide valuable information about the biodiversity and ecosystems of this unique region. Scientists have discovered a "Lost World" in an Indonesian mountain jungle, home to dozens of new exotic species of birds, butterflies, frogs, and plants (over 550 of the latter have been discovered!).  This place is close to a Garden of Eden because it's on Earth  , said Bruce Beehler, co-leader of a U.S., Indonesian, and Australian expedition to the cloud-shrouded Mount Foja in West Papua. Natives living near the Foja mountain range, wh...

Giovanni Maria Pala, an Italian musician and computer technician, has discovered that musical notes may be encoded in Leonardo da Vinci's fresco "The Last Supper." Pala, who has been studying the work since 2003, argues that the artist may have created a musical composition to accompany the Last Supper scene. In his book "Hidden Music," he interprets the painting's symbols as musical cues, and the result of his research is a 40-second "Hymn to God." Experts, including Alessandro Vezzosi, confirm that Pala's hypothesis has merit. Italian musician and computer technician Giovanni Maria Pala claims to have discovered encoded musical notes in Leonardo da Vinci's fresco "The Last Supper," suggesting that the Renaissance genius may have left behind a somber musical composition alongside the painting to accompany the scene depicted in the 15th-century fresco. "It sounds like a requiem," Pala said. "It's like a soundtra...

Mathematicians at the University of Rochester have developed a new concept for an invisible tunnel that could transform the way we perceive light. Inspired by the idea of a "wormhole," the new model uses metamaterials to create an electromagnetic tunnel that is invisible from the outside but allows light to flow invisibly inside. Allan Greenleaf and his team are investigating how bending light can lead to effects resembling interdimensional travel, opening up new possibilities in optical technology and invisibility. Call it Harry Potter's invisible sleeve. New calculations show how to create an electromagnetic "wormhole"—a tunnel that is invisible from the sides but allows light to escape invisibly from its center. The concept is a variation on the spherical invisibility cloak proposed last year. Such a device would be constructed from a metamaterial, a thicket of metal rings or other shapes that reflect light in strange ways. The hollow metamaterial shell could...

 

 

" One cold, icy night, Billy sneaked into St. Anthony's Cemetery to find the grave of "Blind Paul." It was freezing, and Billy was wearing only a windbreaker. He searched everywhere, but the tombstone was nowhere to be found. Suddenly, he heard a growl. He turned around and saw a one-eyed figure with a knife in its hand. He was frightened. He turned around and began running. At one point, he tripped and fell into an empty grave. Suddenly, the grave closed, leaving Billy inside. He screamed loudly, but no one heard him. ****************************** Nanny stopped reading "Extraordinary Stories" to little Ali. Putting the book aside, she turned out the light and quietly left the room. Ala was a graceful eight-year-old with blond hair, blue eyes, and a great sense of humor. She had no friends because she was too mean to everyone. She loved playing pranks on people, which only she laughed at. Her parents were at a loss for what to do with her. Only her nanny m...

  Summer arrived, and the band members scattered to various campsites and resorts, collapsing in the process with long-lost relatives. We stayed in Prague, bored to death. Irka browsed newspapers and old magazines, and I painted. Didn't I tell you I paint yet? It's just an amateur hobby. I paint very often, but few of my works survive for posterity. When a painting is finished, I admire it for a few days, then cut the canvas into small pieces. I do this for a quite simple and rational reason: I need a frame. Irka even claims, sarcastically, that I'm painting the same picture over and over again. In either case, it's surely some kind of perpetual motion machine. So I devoted myself to the joyful torment of creation, while Irka browsed the classifieds sections. "Listen to this," he snorted with laughter at one point, "The all-female, intellectual rock band 'Deputowane' is looking for two guitarists. Auditions will take place..." date, location,...