Menu

Blog

Archive for the ‘neuroscience’ category: Page 561

Mar 22, 2021

Action potentials induce biomagnetic fields in carnivorous Venus flytrap plants

Posted by in categories: biotech/medical, chemistry, neuroscience, quantum physics

“Previously reported detection of plant biomagnetism, which established the existence of measurable magnetic activity in the plant kingdom, was carried out using superconducting-quantum-interference-device (SQUID) magnetometers1, 5, 16. Atomic magnetometers are arguably more attractive for biological applications, since, unlike SQUIDs34, 35, they are non-cryogenic and can be miniaturized to optimize spatial resolution of measured biological features14, 15, 36. In the future, the SNR of magnetic measurements in plants will benefit from optimizing the low-frequency stability and sensitivity of atomic magnetometers. Just as noninvasive magnetic techniques have become essential tools for medical diagnostics of the human brain and body, this noninvasive technique could also be useful in the future for crop-plant diagnostics—by measuring the electromagnetic response of plants facing such challenges as sudden temperature change, herbivore attack, and chemical exposure.”


Upon stimulation, plants elicit electrical signals that can travel within a cellular network analogous to the animal nervous system. It is well-known that in the human brain, voltage changes in certain regions result from concerted electrical activity which, in the form of action potentials (APs), travels within nerve-cell arrays. Electro-and magnetophysiological techniques like electroencephalography, magnetoencephalography, and magnetic resonance imaging are used to record this activity and to diagnose disorders. Here we demonstrate that APs in a multicellular plant system produce measurable magnetic fields. Using atomic optically pumped magnetometers, biomagnetism associated with electrical activity in the carnivorous Venus flytrap, Dionaea muscipula, was recorded. Action potentials were induced by heat stimulation and detected both electrically and magnetically.

Mar 21, 2021

Liz Parrish goes deep into gene therapies at the HackMyAge Podcast by Zora (March 2021)

Posted by in categories: biotech/medical, computing, genetics, law, life extension, neuroscience

Long but annotated! Most important here is human data for specific treatments due out starting in May or June. And apparently they had a mouse study where they expected a paper due out already but other groups chimed in to help with more testing so there is a delay.


Liz Parrish, CEO of BioViva Science and patient zero of biological rejuvenation with gene therapies, is interviewed by Zora Benhamou on her fresh podcast “HackMyAge”.

Continue reading “Liz Parrish goes deep into gene therapies at the HackMyAge Podcast by Zora (March 2021)” »

Mar 21, 2021

Neuroscientists Unveil Tech for the Vision Impaired: Bionic Eyes, Textured Tablets and More

Posted by in categories: cyborgs, neuroscience, transhumanism, wearables

Devices shift away from Robocop-like wearables to simpler, more accessible assistive solutions.


There are many, many wearable and portable devices aimed at improving life for the blind and visually impaired (in some cases, even restoring vision). Such devices have been developed for pretty much every part of the body: fingers, wrists, abdomen, chest, face, ears, feet, even the tongue.

Continue reading “Neuroscientists Unveil Tech for the Vision Impaired: Bionic Eyes, Textured Tablets and More” »

Mar 20, 2021

Gene Therapy Using ‘Zinc Fingers’ May Help Treat Alzheimer’s Disease

Posted by in categories: bioengineering, biotech/medical, genetics, neuroscience

Summary: A new genetic engineering strategy significantly reduces levels of tau in animal models of Alzheimer’s disease. The treatment, which involves a single injection, appears to have long-last effects.

Source: Mass General.

Researchers have used a genetic engineering strategy to dramatically reduce levels of tau–a key protein that accumulates and becomes tangled in the brain during the development of Alzheimer’s disease–in an animal model of the condition.

Mar 20, 2021

New technology ‘retrains’ cells to repair damaged brain tissue in mice after stroke

Posted by in categories: bioengineering, biotech/medical, genetics, life extension, neuroscience

The regeneration of damaged central nervous system (CNS) tissues is one of the biggest goals of regenerative medicine.


Most stroke victims don’t receive treatment fast enough to prevent brain damage. Scientists at The Ohio State University Wexner Medical Center, College of Engineering and College of Medicine have developed technology to “retrain” cells to help repair damaged brain tissue. It’s an advancement that may someday help patients regain speech, cognition and motor function, even when administered days after an ischemic stroke.

Engineering and medical researchers use a process created by Ohio State called tissue nanotransfection (TNT) to introduce genetic material into cells. This allows them to reprogram skin cells to become something different—in this case vascular cells—to help fix damaged tissue.

Continue reading “New technology ‘retrains’ cells to repair damaged brain tissue in mice after stroke” »

Mar 20, 2021

An End To Aging — The Mother Of All Disease

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

I will look at the idea that all disease could be almost stopped in its tracks with a universal treatment for aging. A lot of people ask when we will cure aging and the answer is it may well be here sooner than many realise.

It doesn’t matter how good the treatments are that we develop for cancer, heart disease, alzheimers, and any other of a number of the most common ways we finally die, it is really just a game of whack a mole. If you survive one, just wait a few years and another will get you.

Continue reading “An End To Aging — The Mother Of All Disease” »

Mar 19, 2021

New research provides evidence that a single dose of psilocybin can boost brain connections

Posted by in category: neuroscience

Scientists in Denmark believe the psychedelic substance psilocybin might produce rapid and lasting antidepressant effects in part because it enhances neuroplasticity in the brain. Their new research, published in the International Journal of Molecular Sciences, has found evidence that psilocybin increases the number of neuronal connections in the prefrontal cortex and hippocampus of pig brains.

Psilocybin — the active component in so-called “magic” mushrooms — has been shown to have profound and long-lasting effects on personality and mood. But the mechanisms behind these effects remain unclear. Researchers at Copenhagen University were interested in whether changes in neuroplasticity in brain regions associated with emotional processing could help explain psilocybin’s antidepressant effects.

“Both post-mortem human brain and in vivo studies in depressed individuals have shown a loss of synapses through the down-regulation of synaptic proteins and genes,” the authors of the study wrote. “Hence, upregulation of presynaptic proteins and an increase in synaptic density may be associated with the potential antidepressive effects of psychedelics.”

Mar 19, 2021

Study shows stronger brain activity after writing on paper than on tablet or smartphone

Posted by in categories: mobile phones, neuroscience

A study of Japanese university students and recent graduates has revealed that writing on physical paper can lead to more brain activity when remembering the information an hour later. Researchers say that the complex, spatial and tactile information associated with writing by hand on physical paper is likely what leads to improved memory.

“Actually, paper is more advanced and useful compared to electronic documents because paper contains more one-of-a-kind information for stronger memory recall,” said Professor Kuniyoshi L. Sakai, a neuroscientist at the University of Tokyo and corresponding author of the research recently published in Frontiers in Behavioral Neuroscience. The research was completed with collaborators from the NTT Data Institute of Management Consulting.

Mar 16, 2021

Researchers identify a class of neurons that are most active during non-REM sleep

Posted by in categories: biotech/medical, neuroscience

Typically, pyramidal cells and GABAergic interneurons in the brain are activated simultaneously. A team of neuroscientists at New York University, however, recently identified a unique class of neurons that do not fire at the same time as all principal neurons, cells and interneurons. Interestingly, the team found that these specific neurons are most active during the DOWN state of non-REM (NREM) sleep, when all other neuron types are silent.

“As is often the case in science, our discovery was a true serendipity,” György Buzsáki, one of the researchers who carried out the study, told MedicalXpress. “By collecting sleep recordings in deep layers of the cortex, we observed that spikes of some rare neurons occasionally occurred during the so-called ‘DOWN state’ epochs of sleep. No neuron was supposed to do such thing, as DOWN state is known (and identified by) by its complete neuronal silence (lack of spikes).”

The neocortex, a set of layers in a region of the called cerebral cortex, is rebooted thousands of times every night from the transient (50−300 ms long) DOWN state. In their study, Buzsáki and his colleagues identified a class of neurons that appear to be most active when all other neurons (i.e., excitatory pyramidal and inhibitory neurons) are silent, in the DOWN state, during NREM stages of sleep. In their follow up experiments, they showed that these neurons are neuroglia-form cells found in the deeper layers of the neocortex, which specifically express genes known as ID2 and Nkx2.1.

Mar 16, 2021

Crucial Step in Formation of Deadly Brain Diseases Discovered

Posted by in categories: biotech/medical, neuroscience

Summary: Study sheds light on what causes normal proteins to convert to a diseased form associated with CJD and Kuru.

Source: Imperial College London.

For the first time, researchers have pinpointed what causes normal proteins to convert to a diseased form, causing conditions like CJD and Kuru.