Our brains are made of billions of neurons, which are connected forming complex networks. They communicate between themselves by sending electrical signals, known as action potentials, and chemical signals, known as neurotransmitters, ...
Apr 6, 2023
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(Medical Xpress)—When the brains of those who have succumbed to age-related neurodegeneration are analyzed post-mortem, they typically show significant atrophy on all scales. Not only is the cortex thinner and sparser, ...
The brain is perhaps the most sensitive organ with respect to changes in blood flow and oxygen supply. Even brief interruptions in capillary flow (or "stalling") can indicate acute neurological issues; evidence suggests that ...
Sep 13, 2023
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St. Jude Children's Research Hospital is reporting phase 2 clinical trial results treating the brain tumor craniopharyngioma with proton therapy. The researchers found a similar survival rate between more targeted proton ...
Apr 19, 2023
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When you are first learning how to ride a bicycle or play a musical instrument, your physical movements are uncoordinated at best. But with time and lots of repetition, your brain's motor neurons create a kind of shorthand ...
Sep 14, 2022
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To combat viruses, one of humankind's oldest threats, researchers are studying predators with the oldest adaptive immune system in the animal kingdom: sharks.
Jun 1, 2022
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The COVID-19 pandemic has reinforced the pressing need to mitigate a fast-developing virus as well as antibiotic-resistant bacteria that are growing at alarming rates worldwide.
May 18, 2021
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New research led by Northeastern University suggests that Alzheimer's disease may not progress like falling dominoes, as conventional wisdom holds, with one molecular event sparking the formation of plaques throughout the ...
Sep 16, 2016
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In a long-awaited finding, an international team of scientists using high-brightness x-rays from the U.S. Department of Energy Office of Science's Advanced Photon Source at Argonne National Laboratory has determined the high-resolution ...
Sep 27, 2013
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The pain and itching associated with shingles and herpes may be due to the virus causing a "short circuit" in the nerve cells that reach the skin, Princeton researchers have found.
Sep 10, 2013
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The science of photonics includes the generation, emission, transmission, modulation, signal processing, switching, amplification, detection and sensing of light. The term photonics thereby emphasizes that photons are neither particles nor waves — they are different in that they have both particle and wave nature. It covers all technical applications of light over the whole spectrum from ultraviolet over the visible to the near-, mid- and far-infrared. Most applications, however, are in the range of the visible and near infrared light. The term photonics developed as an outgrowth of the first practical semiconductor light emitters invented in the early 1960s and optical fibers developed in the 1970s.
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