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Category: neuroscience – Page 522

Everything — Yes, Everything — is a SPRING! (Pretty much)

Sponsor: AG1, The nutritional drink I’m taking for energy and mental focus. Tap this link to get a year’s supply of immune-supporting vitamin D3-K2 & 5 travel packs FREE with your first order: https://www.athleticgreens.com/arvinash.

Science Asylum video on Schrodinger Equation:

JOIN our PATREON (Members help pay for the animations. THANK YOU so much!):
https://www.patreon.com/arvinash.

RECOMMENDED READING:
Schwartz, “Quantum Field Theory and the Standard model” https://amzn.to/3HmWdYt.

CHAPTERS:
0:00 The most important motion in the universe.
1:08 How get energy and mental focus.
2:20 A spring: Classical simple harmonic oscillator.
4:48 QUANTUM Harmonic oscillator.
6:00 Science Asylum — what is the Schrodinger equation?
7:30 Quantum Field Theory (QFT) uses spring math!
10:00 Intuitive description of what’s going on!
12:37 What is really oscillating in QFT?

SUMMARY:

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The colour that doesn’t exist

When we look at a rainbow, we see a full spectrum of light. Every colour we could imagine. Except one – magenta. Where is it? Well, officially magenta doesn’t exist. There is no wavelength of light for magenta, meaning the human brain literally makes it up, but how? Video by Archie Crofton Narrated by Lotte Rice Commissioned by Paul Ivan Harris Follow BBC Reel on Twitter, Instagram, Facebook and YouTube.

SpoonTEK — The Spoon that Elevates Taste

The built-in ion sensory technology mildly excites the taste buds on your tongue like they’ve never been stimulated before! The immediate results are enhanced flavor, heightened taste, and improved aftertaste. SpoonTEK science combines the power of advanced electronics with tongue sensory and the brain for an amazing eating experience. It’s not just any spoon—it’s the only spoon you will need to take your taste to the next level.

Neural decoding of music from the EEG

Neural decoding models attempt to identify the current mental state of an individual from recordings of their neural activity1. In recent years, neural decoders have been developed to identify numerous different types of mental activity from many neuroimaging modalities. These decoders were first developed to decode visual2,3 and semantic4,5,6,7 information from the brain, while more recent examples of neural decoders have been developed to decode a diverse set of activities, including, but not limited to, affective states8, visual imagery during sleep9, and story meaning10.

Neural decoding models have been developed that make use of many different types of neuroimaging techniques including, but not limited to, functional magnetic resonance imaging (fMRI), electrocortiography (ECoG), electroencephalogram (EEG), and functional near infrared spectroscopy (fNIRS). Depending on the type of neuroimaging technique the neural decoder uses different types of mental processes may be decoded. For example, fMRI provides a recording of activity throughout the entire brain with a very high spatial resolution, allowing a neural decoder the ability to decode mental states involving sub-cortical brain regions11. However, this comes at the cost of poor time resolution, which prevents decoding of mental activity over very short time scales.

The Question of Free Will

Do we make conscious decisions? Or are all of our actions predetermined? And if we don’t have free will, are we responsible for what we do? Modern neurotechnology is now allowing scientists to study brain activity neuron by neuron to try to determine how and when our brains decide to act. In this program, experts probe the latest research and explore the question of just how much agency we have in the world, and how the answer impacts our ethics, our behavior, and our society.

This program is part of the Big Ideas Series, made possible with support from the John Templeton Foundation.

Visit our Website: http://www.worldsciencefestival.com/
Like us on Facebook: https://www.facebook.com/worldsciencefestival.
Follow us on twitter: https://twitter.com/WorldSciFest.

Original Program Date: May 30, 2015
Host: Emily Senay.
PARTICIPANTS: Christof Koch, Tamar Kushnir, Alfred Mele, Azim Shariff.

Emily Senay Introduction. 00:00

Participant Introductions. 03:39

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Pioneering Transhumanism: a conversation with Natasha Vita-More

Transhumanism is the idea that technology and evidence-based science can and should be used to augment and improve humans in order to overcome the limitations that evolution has left us with. As the name suggests, it stems from humanism, but it adds an optimism that cognitive and physical improvement is both possible and desirable.

On the face of it, the idea that humans should be permitted to use technology to live healthier and happier lives does not sound dangerous, or even contentious. But it does provoke strong opposition: in 2004, Francis Fukuyama called transhumanism “the world’s most dangerous idea”. The force of that claim is somewhat undermined when you consider how wildly wrong his previous big idea turned out to be: in 1992 he declared that because the Cold War ended with the collapse of the Soviet Union, history had come to an end. Nevertheless, Fukuyama is not alone in fearing transhumanism.

Some people object to transhumanism because they think we should strive to be “natural”, and to be content with what evolution – or their god — have given us. But of course the definition of what is “natural” changes over time. Nature didn’t endow us with spectacles, and few people now argue they should be banned. Now we have cochlear implants, and many people feel that their smartphones are extensions of themselves. In the future we will have the option of raising our IQ with smart drugs or with gene therapy, and these will be hotly debated.

Researchers Provide New Insight Into the Carefully Choreographed Dance of Nerve and Vascular Cells

Nerve cells require vast amounts of energy and oxygen which they receive through the bloodstream. This results in nerve tissue being densely intertwined with numerous blood vessels. However, what prevents neurons and vascular cells from interfering with each other during growth? Researchers from the Universities of Heidelberg and Bonn, in collaboration with international partners, have uncovered a mechanism that ensures this coordination. The findings have recently been published in the journal Neuron.

Nerve cells are highly energy-intensive, requiring a large amount of fuel. Approximately 20% of the calories we consume through food are dedicated to our brain, as the generation of voltage pulses (action potentials) and transmission between neurons is incredibly energy-demanding. For this reason, nerve tissue is usually crisscrossed by numerous blood vessels. They ensure a supply of nutrients and oxygen.

During embryonic development, a large number of vessels sprout in the brain and spinal cord, but also in the retina of the eye. Additionally, masses of neurons are formed there, which network with each other and with structures such as muscles and organs. Both processes have to be considerate of each other so as not to get in each other’s way. “We have identified a new mechanism that ensures this,” explains Prof. Dr. Carmen Ruiz de Almodóvar, member of the Cluster of Excellence ImmunoSensation2 and the Transdisciplinary Research Area Life & Health at the University of Bonn.

Buzzing the brain with electricity can boost the willingness to engage in mental effort

Neuroscientists have successfully increased the motivation to exert mental effort by using a weak alternating electrical current sent through electrodes attached to the scalp to synchronize brain waves. The findings, published in Cognitive, Affective, & Behavioral Neuroscience, help to identify the neural mechanisms underlying the willingness to engage in mental effort, suggesting that midfrontal theta oscillations play a key role.

“For a long time research has mainly focussed on which brain mechanisms underlie mental processes, but in the recent years it has become clear that engaging in mental activities needs to be understood as an active decision process where humans are willing to perform demanding mental tasks only if they are ‘worth it.’ The goal of our research was to get a better understanding of the brain mechanisms causally determining our motivation to engage in demanding mental activities,” explained study author Alexander Soutschek, a research group leader at the psychology department of the University of Munich.

For their study, the researchers utilized transcranial alternating current stimulation (tACS), a non-invasive neurostimulation technique that applies low-amplitude electrical current to the scalp through electrodes. The current modulates the neural activity in the brain regions under the electrodes, potentially enhancing or suppressing specific cognitive processes.

Robert M. Sapolsky

Robert Sapolsky’s book is now available for pre-order!

𝙊𝙣𝙚 𝙤𝙛 𝙤𝙪𝙧 𝙜𝙧𝙚𝙖𝙩 𝙗𝙚𝙝𝙖𝙫𝙞𝙤𝙧𝙖𝙡 𝙨𝙘𝙞𝙚𝙣𝙩𝙞𝙨𝙩𝙨, 𝙩𝙝𝙚 𝙗𝙚𝙨𝙩𝙨𝙚𝙡𝙡𝙞𝙣𝙜 𝙖𝙪𝙩𝙝𝙤𝙧 𝙤𝙛 𝘽𝙚𝙝𝙖𝙫𝙚, 𝙥𝙡𝙪𝙢𝙗𝙨 𝙩𝙝𝙚 𝙙𝙚𝙥𝙩𝙝𝙨 𝙤𝙛 𝙩𝙝𝙚 𝙨𝙘𝙞𝙚𝙣𝙘𝙚 𝙖𝙣𝙙 𝙥𝙝𝙞𝙡𝙤𝙨𝙤𝙥𝙝𝙮 𝙤𝙛 𝙙𝙚𝙘𝙞𝙨𝙞𝙤𝙣-𝙢𝙖𝙠𝙞𝙣𝙜 𝙩𝙤 𝙢𝙤𝙪𝙣𝙩 𝙖 𝙙𝙚𝙫𝙖𝙨𝙩𝙖𝙩𝙞𝙣𝙜 𝙘𝙖𝙨𝙚 𝙖𝙜𝙖𝙞𝙣𝙨𝙩 𝙛𝙧𝙚𝙚 𝙬𝙞𝙡𝙡, 𝙖𝙣 𝙖𝙧𝙜𝙪𝙢𝙚𝙣𝙩 𝙬𝙞𝙩𝙝 𝙥𝙧𝙤𝙛𝙤𝙪𝙣𝙙 𝙘𝙤𝙣𝙨𝙚𝙦𝙪𝙚𝙣𝙘𝙚𝙨.

Buy Determined: A Science of Life Without Free Will on Amazon.com ✓ FREE SHIPPING on qualified orders.

Why I Am Spending Millions To Be 18 Again

The man himself:

Blueprint is a public science experiment to determine whether it’s possible to stay the same biological age. This requires slowing down aging processes as much as possible and then reversing the aging that has happened. Currently my speed of aging is .76 (DunedinPACE). That means for every 365 days each year, I age 277 days. My goal is to remain the same age biologically for every 365 days that pass.

I openly share (for free!) my diet, exercise and other protocols so that others can benefit and try to improve upon what I’m doing. I also openly share my health data as data is better than human opinion at guiding decision making. You can find everything here: https://blueprint.bryanjohnson.co/

This video is a whirlwind tour of what my daily life looks like as my team and I are on this adventure.

On the surface, Blueprint may seem like something about health, wellness and aging. To me, it’s a philosophy.

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