Page 1511
Jan 19, 2024
Research into the nature of memory reveals how cells that store information are stabilized over time
Posted by Cecile G. Tamura in categories: biotech/medical, neuroscience
When neurons are activated in the hippocampus, not all are going to be firing at once.
Think of a time when you had two different but similar experiences in a short period. Maybe you attended two holiday parties in the same week or gave two presentations at work. Shortly afterward, you may find yourself confusing the two, but as time goes on that confusion recedes and you are better able to differentiate between these different experiences.
New research published in Nature Neuroscience reveals that this process occurs on a cellular level, findings that are critical to the understanding and treatment of memory disorders, such as Alzheimer’s disease.
Jan 19, 2024
Lifespan Increases in Mice when Specific Brain Cells are Activated, study finds
Posted by Natalie Chan in categories: biotech/medical, life extension, neuroscience
In recent years, research has begun to reveal that the lines of communication between the body’s organs are key regulators of aging. When these lines are open, the body’s organs and systems work well together. But with age, communication lines deteriorate, and organs don’t get the molecular and electrical messages they need to function properly.
A new study from Washington University School of Medicine in St. Louis identifies, in mice, a critical communication pathway connecting the brain and the body’s fat tissue in a feedback loop that appears central to energy production throughout the body. The research suggests that the gradual deterioration of this feedback loop contributes to the increasing health problems that are typical of natural aging.
The study—published in the journal Cell Metabolism—has implications for developing future interventions that could maintain the feedback loop longer and slow the effects of advancing age.
Jan 19, 2024
Discovery of new ultra-large cosmic structure challenges our understanding of the universe
Posted by Dan Breeden in category: cosmology
The discovery of a second ultra-large structure in the remote universe has further challenged some of the basic assumptions about cosmology.
The Big Ring in the Sky is 9.2 billion light-years from Earth. It has a diameter of about 1.3 billion light-years, and a circumference of about 4 billion light-years. If we could step outside and see it directly, the diameter of the Big Ring would need about 15 full moons to cover it.
It is the second ultra-large structure discovered by University of Central Lancashire (UCLan) Ph.D. student Alexia Lopez who, two years ago, also discovered the Giant Arc in the Sky. Remarkably, the Big Ring and the Giant Arc, which is 3.3 billion light-years across, are in the same cosmological neighborhood—they are seen at the same distance, at the same cosmic time, and are only 12 degrees apart in the sky.
Jan 19, 2024
In New Experiment, Young Children Destroy AI at Basic Tasks
Posted by Zola Balazs Bekasi in categories: innovation, robotics/AI
A study pitting human children against large language models in basic reasoning problems revealed AIs to have one big blind spot: innovation.
Jan 19, 2024
Arizona State students will get their own ChatGPT-powered tutors as OpenAI partners with the university
Posted by Zola Balazs Bekasi in category: robotics/AI
On Thursday, OpenAI and ASU announced the first-of-its-kind partnership, which has reportedly been in the works for six months.
Students, professors, and researchers are set to get access to the tech in February. The university plans to build personalized AI tutors and avatars for students and expand its prompt engineering course.
In a press release, Arizona State University said the partnership would set a new precedent for how universities “enhance learning, creativity and student outcomes.”
Jan 19, 2024
Unlocking the secrets of quasicrystal magnetism: Revealing a novel magnetic phase diagram
Posted by Genevieve Klien in categories: particle physics, quantum physics
Quasicrystals are intermetallic materials that have garnered significant attention from researchers aiming to advance condensed matter physics understanding. Unlike normal crystals, in which atoms are arranged in an ordered repeating pattern, quasicrystals have non-repeating ordered patterns of atoms.
Their unique structure leads to many exotic and interesting properties, which are particularly useful for practical applications in spintronics and magnetic refrigeration.
A unique quasicrystal variant, known as the Tsai-type icosahedral quasicrystal (iQC) and their cubic approximant crystals (ACs), display intriguing characteristics. These include long-range ferromagnetic (FM) and anti-ferromagnetic (AFM) orders, as well as unconventional quantum critical phenomenon, to name a few.
Jan 19, 2024
Typo in telescope coordinates reveals one of the faintest galaxies in the known universe
Posted by Dan Breeden in category: space
Astronomers accidentally uncovered an extremely dark primordial galaxy — one of the faintest objects in the universe — because of a typo in their telescope coordinates.
Jan 19, 2024
Quantum Approaches to Consciousness
Posted by Dan Breeden in categories: neuroscience, quantum physics
It is widely accepted that consciousness or, more generally, mental activity is in some way correlated to the behavior of the material brain. Since quantum theory is the most fundamental theory of matter that is currently available, it is a legitimate question to ask whether quantum theory can help us to understand consciousness. Several approaches answering this question affirmatively, proposed in recent decades, will be surveyed. There are three basic types of corresponding approaches: consciousness is a manifestation of quantum processes in the brain, quantum concepts are used to understand consciousness without referring to brain activity, and matter and consciousness are regarded as dual aspects of one underlying reality. Major contemporary variants of these quantum-inspired approaches will be discussed.
Jan 19, 2024
Are tiny black holes hiding within giant stars?
Posted by Dan Breeden in category: cosmology
Phenomenon could account for universe’s mysterious dark matter.