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Archive for the ‘neuroscience’ category: Page 813

Aug 27, 2018

Physicists race to demystify Einstein’s ‘spooky’ science

Posted by in categories: computing, encryption, mobile phones, neuroscience, quantum physics, science, space

When it comes to fundamental physics, things can get spooky. At least that’s what Albert Einstein said when describing the phenomenon of quantum entanglement—the linkage of particles in such a way that measurements performed on one particle seem to affect the other, even when separated by great distances. “Spooky action at a distance” is how Einstein described what he couldn’t explain.

While quantum mechanics includes many mysterious phenomena like entanglement, it remains the best fundamental physical theory describing how matter and light behave at the smallest scales. Quantum theory has survived numerous experimental tests in the past century while enabling many advanced technologies: modern computers, digital cameras and the displays of TVs, laptops and smartphones. Quantum entanglement itself is also the key to several next-generation technologies in computing, encryption and telecommunications. Yet, there is no clear consensus on how to interpret what quantum theory says about the true nature of reality at the subatomic level, or to definitively explain how entanglement actually works.

According to Andrew Friedman, a research scientist at the University of California San Diego Center for Astrophysics and Space Sciences (CASS), “the race is on” around the globe to identify and experimentally close potential loopholes that could still allow alternative theories, distinct from quantum theory, to explain perplexing phenomena like quantum entanglement. Such loopholes could potentially allow future quantum encryption schemes to be hacked. So, Friedman and his fellow researchers conducted a “Cosmic Bell” test with polarization-entangled photons designed to further close the “freedom-of-choice” or “free will” loophole in tests of Bell’s inequality, a famous theoretical result derived by physicist John S. Bell in the 1960s. Published in the Aug. 20 issue of Physical Review Letters, their findings are consistent with quantum theory and push back to at least 7.

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Aug 27, 2018

Secret immune cell tunnels found in human skulls

Posted by in categories: biotech/medical, neuroscience

Hidden tunnels which link the human skull to the brain have been discovered by scientists, leading to hopes the breakthrough may help in stroke and Alzheimer’s research.

Researchers believe that the passages provide a quick channel for immune cells to reach the brain from the bone marrow in the skull.

Previously it was through that immune cells formed in the bone marrow of the limbs was transported up to the brain to clear out infection.

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Aug 27, 2018

In sync: How cells make connections could impact circadian rhythm

Posted by in categories: biotech/medical, information science, neuroscience

If you’ve ever experienced jet lag, you are familiar with your circadian rhythm, which manages nearly all aspects of metabolism, from sleep-wake cycles to body temperature to digestion. Every cell in the body has a circadian clock, but researchers were unclear about how networks of cells connect with each other over time and how those time-varying connections impact network functions.

In research published Aug. 27 in PNAS, researchers at Washington University in St. Louis and collaborating institutions developed a unified, data-driven computational approach to infer and reveal these connections in biological and chemical oscillatory networks, known as the topology of these , based on their time-series data. Once they establish the topology, they can infer how the agents, or cells, in the network work together in synchrony, an important state for the brain. Abnormal synchrony has been linked to a variety of brain disorders, such as epilepsy, Alzheimer’s disease and Parkinson’s disease.

Jr-Shin Li, professor of systems science & mathematics and an applied mathematician in the School of Engineering & Applied Science, developed an algorithm, called the ICON (infer connections of networks) method, that shows for the first time the strength of these connections over time. Previously, researchers could only determine whether a connection existed between networks.

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Aug 27, 2018

Mysterious new brain cell found in people

Posted by in category: neuroscience

But newly discovered “rosehip” neuron is missing in mice.

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Aug 25, 2018

How 1 man’s brain injury turned him into a math savant

Posted by in categories: mathematics, neuroscience

Jason Padgett grew up struggling in school — until one night in 2002 when he was attacked in a bar and everything changed. Padgett said after the incident, he was using areas of the brain he didn’t previously have access to; he experienced choppy vision, was drawing intricate shapes and was seeing complex mathematical objects everywhere. Dr. Darold Treffert, a world renowned expert on savants, later diagnosed Padgett with acquired savant syndrome, which explained Padgett’s new skills. Padgett joins Megyn Kelly TODAY to share his story.

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Aug 24, 2018

Forget “Manned” Missions–Females May Be More Mentally Resilient in Deep Space

Posted by in categories: neuroscience, space

A controversial new study in lab mice hints at sex-based differences in cosmic ray–induced cognitive decline.

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Aug 24, 2018

Scientists Have Discovered The Protein That Enables Hearing And Balance

Posted by in category: neuroscience

Scientists at Harvard Medical School have discovered that a protein called TMC1 converts sound and head motion into electrical signals, thus enabling hearing and balance.

The findings were published this week in the journal https://www.cell.com/neuron/fulltext/S0896-6273(18)30631...ctitle0120\">Neuron.

Sensitivity to sound has been a powerful evolutionary force, but the precise molecular mechanisms that enable hearing have not been fully identified.

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Aug 23, 2018

Tau Protein Aggregation is Linked to DNA Damage and Senescent Cells

Posted by in categories: biotech/medical, life extension, neuroscience, open access

Today, we want to draw your attention to a recent study showing an association between the accumulation of Tau proteins, which are misfolded proteins that typically indicate Alzheimer’s disease and senescent cells.

Unfortunately, this journal paper is hidden behind a paywall, as is 70% of scientific data; this is an unacceptable situation for science and the sharing of knowledge. However, thanks to the work of Sci-Hub, a website that bypasses paywalls and offers free access to all scientific papers, you can read it without spending a dime.

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Aug 21, 2018

The Transhumanist Bill of Rights version 2.0

Posted by in categories: biological, information science, mobile phones, neuroscience, transhumanism

Level 4 – Awareness + World model: Systems that have a modeling system complex enough to create a world model: a sense of other, without a sense of self – e.g., dogs. Level 4 capabilities include static behaviors and rudimentary learned behavior.

Level 5 – Awareness + World model + Primarily subconscious self model = Sapient or Lucid: Lucidity means to be meta-aware – that is, to be aware of one’s own awareness, aware of abstractions, aware of one’s self, and therefore able to actively analyze each of these phenomena. If a given animal is meta-aware to any extent, it can therefore make lucid decisions. Level 5 capabilities include the following: The “sense of self”; Complex learned behavior; Ability to predict the future emotional states of the self (to some degree); The ability to make motivational tradeoffs.

Level 6 – Awareness + World model + Dynamic self model + Effective control of subconscious: The dynamic sense of self can expand from “the small self” (directed consciousness) to the big self (“social group dynamics”). The “self” can include features that cross barriers between biological and non-biological – e.g., features resulting from cybernetic additions, like smartphones.

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Aug 21, 2018

Our capacity for abstract thinking and dreams (a new brain-state of REM or paradoxical sleep) arose during the cold to warm blooded interface

Posted by in category: neuroscience

“Self volition” evolved in direct inverse to atrophy of the primal eye. New Book coming soon https://www.academia.edu/36239908/Finite_to_Infinite_State

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