Neurology


Scientists have discovered our brains communicate in a brand new way

Daily Mail

The human brain is capable of communicating in a way scientists previously thought was impossible. Brain cells can create an electrical field that triggers nearby neurons to pass on a message without any physical or chemical connections. Slow and mysterious waves produced by the brain, which have long been known to exist but whose function has been a long-standing mystery, are responsible. The discovery is so unusual the scientific journal that made the findings public demanded that the experiments were repeated before they were willing to publish. 'It was a jaw-dropping moment, for us and for every scientist we told about this so far, said Dominique Duran, a professor at the Case School of Engineering in Cleveland, Ohio.


10 Proven Ways to Learn Faster

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Learning new things is a huge part of life -- we should always be striving to learn and grow. But it takes time, and time is precious. So how can you make the most of your time by speeding up the learning process? Thanks to neuroscience, we now have a better understanding of how we learn and the most effective ways our brains process and hold on to information. If you want to get a jump start on expanding your knowledge, here are 10 proven ways you can start learning faster today.


A robot that can touch, eat and sleep? The science of cyborgs like Alita: Battle Angel

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Alita: Battle Angel is an interesting and wild ride, jam-packed full of concepts around cybernetics, dystopian futures and cyberpunk themes. The film – in cinemas now – revolves around Alita (Rosa Salazar), a female cyborg (with original human brain) that is recovered by cybernetic doctor Dyson Ido (Christoph Waltz) and brought into the world of the future (the film is set in 2563). Hundreds of years after a catastrophic war, called "The Fall", the population of Earth now resides in a wealthy sky city called Zalem and a sprawling junkyard called Iron City where the detritus from Zalem is dumped. We follow Alita's story as she makes friends and enemies, and discovers more about her past. Her character is great – she has many of the mannerisms of a teenage girl combined with a determination and overarching sense of what is right – "I do not stand by in the presence of evil."


New machine learning algorithm can help search new drugs

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LONDON, Feb 12: Researchers say they have developed a machine learning algorithm for drug discovery which is twice as efficient as the industry standard, and could accelerate the process of developing new treatments for diseases such as Alzheimer's. The team led by researchers at the University of Cambridge in the UK used the algorithm to identify four new molecules that activate a protein thought to be relevant for symptoms of Alzheimer's disease and schizophrenia. A key problem in drug discovery is predicting whether a molecule will activate a particular physiological process, according to the study published in the journal PNAS. It is possible to build a statistical model by searching for chemical patterns shared among molecules known to activate that process, but the data to build these models is limited because experiments are costly and it is unclear which chemical patterns are statistically significant. Machine learning is an application of artificial intelligence (AI) that provides systems the ability to automatically learn and improve from experience without being explicitly programmed "Machine learning has made significant progress in areas such as computer vision where data is abundant," said Alpha Lee from Cambridge's Cavendish Laboratory.


How the Brain Keeps Its Memories in the Right Order

WIRED

It began about a decade ago at Syracuse University, with a set of equations scrawled on a blackboard. Marc Howard, a cognitive neuroscientist now at Boston University, and Karthik Shankar, who was then one of his postdoctoral students, wanted to figure out a mathematical model of time processing: a neurologically computable function for representing the past, like a mental canvas onto which the brain could paint memories and perceptions. "Think about how the retina acts as a display that provides all kinds of visual information," Howard said. "That's what time is, for memory. And we want our theory to explain how that display works."


AI Is Rapidly Augmenting Healthcare and Longevity

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When it comes to the future of healthcare, perhaps the only technology more powerful than CRISPR is artificial intelligence. Over the past five years, healthcare AI startups around the globe raised over $4.3 billion across 576 deals, topping all other industries in AI deal activity. During this same period, the FDA has given 70 AI healthcare tools and devices'fast-tracked approval' because of their ability to save both lives and money. The pace of AI-augmented healthcare innovation is only accelerating. In Part 3 of this blog series on longevity and vitality, I cover the different ways in which AI is augmenting our healthcare system, enabling us to live longer and healthier lives.


Using neuroscience to develop artificial intelligence

Science

When the mathematician Alan Turing posed the question "Can machines think?" in the first line of his seminal 1950 paper that ushered in the quest for artificial intelligence (AI) (1), the only known systems carrying out complex computations were biological nervous systems. It is not surprising, therefore, that scientists in the nascent field of AI turned to brain circuits as a source for guidance. One path that was taken since the early attempts to perform intelligent computation by brain-like circuits (2), and which led recently to remarkable successes, can be described as a highly reductionist approach to model cortical circuitry. In its basic current form, known as a "deep network" (or deep net) architecture, this brain-inspired model is built from successive layers of neuron-like elements, connected by adjustable weights, called "synapses" after their biological counterparts (3). The application of deep nets and related methods to AI systems has been transformative.


Machine Learning Algorithm Helps In The Search For New Drugs

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Researchers have designed a machine learning algorithm for drug discovery which has been shown to be twice as efficient as the industry standard, which could accelerate the process of developing new treatments for disease. The researchers, led by the University of Cambridge, used their algorithm to identify four new molecules that activate a protein which is thought to be relevant for symptoms of Alzheimer's disease and schizophrenia. The results are reported in the journal PNAS.


AI's anatomy - toward augmented healthcare

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The possibilities that intelligent systems hold and the disruption that will be driven by them will sooner rather than later require a change in the mindset, concerning social and economic factors. While the emergence of Artificial Intelligence (AI) has started a political and economic struggle between countries over gaining AI supremacy. It has also caused a technological shift that gradually affects almost every industry. Especially, the healthcare sector is said to be influenced the most by this change. If applied correctly this technology may lead to an aspired improvement in patient care.


Automated ASPECTS on Noncontrast CT Scans in Patients with Acute Ischemic Stroke Using Machine Learning

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BACKGROUND AND PURPOSE: Alberta Stroke Program Early CT Score (ASPECTS) was devised as a systematic method to assess the extent of early ischemic change on noncontrast CT (NCCT) in patients with acute ischemic stroke (AIS). Our aim was to automate ASPECTS to objectively score NCCT of AIS patients. MATERIALS AND METHODS: We collected NCCT images with a 5-mm thickness of 257 patients with acute ischemic stroke ( 8 hours from onset to scans) followed by a diffusion-weighted imaging acquisition within 1 hour. Expert ASPECTS readings on DWI were used as ground truth. Texture features were extracted from each ASPECTS region of the 157 training patient images to train a random forest classifier.