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Archive for the ‘neuroscience’ category: Page 717

Jan 21, 2019

United Neuroscience’s Alzheimer Vaccine Just Might Work

Posted by in categories: biotech/medical, neuroscience

RealClearScience.

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Jan 21, 2019

AI Created in DNA-Based Artificial Neural Networks

Posted by in categories: bioengineering, biotech/medical, mathematics, neuroscience, robotics/AI, security

Mention artificial intelligence (AI) or artificial neural networks, and images of computers may come to mind. AI-based pattern recognition has a wide variety of real-world uses, such as medical diagnostics, navigation systems, voice-based authentication, image classification, handwriting recognition, speech programs, and text-based processing. However, artificial intelligence is not limited to digital technology and is merging with the realm of biology—synthetic biology and genomics, to be more precise. Pioneering researchers led by Dr. Lulu Qian at the California Institute of Technology (Caltech) have created synthetic biochemical circuits that are able to perform information processing at the molecular level–an artificial neural network consisting of DNA instead of computer hardware and software.

Artificial intelligence is in the early stages of a renaissance period—a rebirth that is largely due to advances in deep learning techniques with artificial neural networks that have contributed to improvements in pattern recognition. Specifically, the resurgence is largely due to a mathematical tool that calculates derivatives called backpropagation (backward propagation)—it enables artificial neural networks to adjust hidden layers of neurons when there are outlier outcomes for more precise results.

Artificial neural networks (ANN) are a type of machine learning method with concepts borrowed from neuroscience. The structure and function of the nervous system and brain were inspiration for artificial neural networks. Instead of biological neurons, ANNs have artificial nodes. Instead of synapses, ANNs have connections that are able to transmit signals between nodes. Like neurons, the nodes of ANNs are able to receive and process data, as well as activate other nodes connected to it.

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Jan 20, 2019

Alaska woman with MS says stem-cell treatment has left her ‘practically symptom-free’

Posted by in categories: biotech/medical, neuroscience

A young mother from Anchorage, Alaska, who was diagnosed with multiple sclerosis (MS) more than 10 years ago says an experimental stem-cell treatment has left her “practically symptom-free.”

Amanda Loy was 27 years old when she was first diagnosed with the disease, which typically affects the brain and spinal cord, also known as the central nervous system. MS can be debilitating and there is currently no cure, according to the Multiple Sclerosis International Federation.

ACTRESS SELMA BLAIR, 46, REVEALS MS DIAGNOSIS: ‘I AM DISABLED’

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Jan 20, 2019

Pioneering brain study reveals ‘software’ differences between humans and monkeys

Posted by in categories: biotech/medical, neuroscience

Neuroscientists have for the first time discovered differences between the ‘software’ of humans and monkey brains, using a technique that tracks single neurons.

They found that human brains trade off ‘robustness’ — a measure of how synchronized neuron signals are — for greater efficiency in information processing. The researchers hypothesize that the results might help to explain humans’ unique intelligence, as well as their susceptibility to psychiatric disorders. The findings were published in Cell on 17 January.

Scientists say that this type of unusual study could help them to better translate research in animal models of psychiatric diseases into the clinic.

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Jan 19, 2019

Evolution calls on us to lose weight slowly over time

Posted by in categories: energy, evolution, food, health, neuroscience

| Local | http://idahostatejournal.com/ Cutting calories (dieting) and increasing caloric expenditure (exercise) cause your brain to activate neurons that will not allow you to utilize fat or lose weight.


Recently, and at a most appropriate time, another study published in the journal eLife has given explanation as to why your current New Year’s Resolution diet will not work.

Cutting calories (dieting) and increasing caloric expenditure (exercise) cause your brain to activate neurons that will not allow you to utilize fat or lose weight.

Continue reading “Evolution calls on us to lose weight slowly over time” »

Jan 19, 2019

This Scientist Is On The Verge Of Curing Multiple Sclerosis For 2.3 Million Patients

Posted by in categories: biotech/medical, health, neuroscience

More effective treatments for Multiple Sclerosis on the horizon?


Dr. Metcalfe and her company are already looking to take down other severe diseases as well.

“Psoriasis is high up on our list, and diabetes is another. Downstream there are all the dementias because a LIF is a major health factor for the brain. So if we can get it into the brain we can start protecting against dementia.”

Continue reading “This Scientist Is On The Verge Of Curing Multiple Sclerosis For 2.3 Million Patients” »

Jan 19, 2019

Are We Just Another Primate? Robert Sapolsky

Posted by in category: neuroscience

Perhaps not the most complete and/or updated view on dopamine, but pretty fun short talk overall. No, we’re not that different.


http://www.scienceandnonduality.com

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Jan 19, 2019

Real-Life Expanding Brain Technique Is Blowing Some Minds

Posted by in category: neuroscience

It’s now possible to image an entire fly brain in just a few days, according to a new study—this might sound like a long time, but is in fact an incredible accomplishment, when you consider that the process would otherwise take weeks.

Brains aren’t easy to study—the human brain, for example, contains over 80 billion cells linked via 7,000 connections each, according to the new study published in Science. Even the far smaller fly brains are an incredible challenge to study comprehensively. The new research combines two microscopy methods to image and examine brains like never before.

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Jan 19, 2019

Scott Aaronson — The Winding Road to Quantum Supremacy

Posted by in categories: computing, existential risks, neuroscience, quantum physics

This was the first part in an interview series with Scott Aaronson — this one is on quantum computing — other segments are on Existential Risk, consciousness (including Scott’s thoughts on IIT) and thoughts on whether the universe is discrete or continuous.


First part in an interview series with Scott Aaronson — this one is on quantum computing — future segments will be on Existential Risk, consciousness (including Scott’s thoughts on IIT) and thoughts on whether the universe is discrete or continuous.

Continue reading “Scott Aaronson — The Winding Road to Quantum Supremacy” »

Jan 18, 2019

The Ghost in the Quantum Turing Machine

Posted by in categories: computing, cosmology, neuroscience, quantum physics

Interview with Scott Aaronson — covering whether quantum computers could have subjective experience, whether information is physical and what might be important for consciousness — he touches on classic philosophical conundrums and the observation that while people want to be thorough-going materialists, unlike traditional computers brain-states are not obviously copyable. Aaronson wrote about this his paper ‘The Ghost in the Quantum Turing Machine’ (found here https://arxiv.org/abs/1306.0159). Scott also critiques Tononi’s integrated information theory (IIT).


Scott discusses whether quantum computers could have subjective experience, whether information is physical and what might be important for consciousness — he touches on classic philosophical conundrums and the observation that while people want to be thorough-going materialists, unlike traditional computers brain-states are not obviously copyable. Aaronson wrote about this his paper ‘The Ghost in the Quantum Turing Machine’ (found here https://arxiv.org/abs/1306.0159). Scott also critiques Tononi’s integrated information theory (IIT).

Continue reading “The Ghost in the Quantum Turing Machine” »