Vijay Balasubramanian University of Pennsylvania, SFI The human brain consists of a 100 billion neurons connected by a 100 trillion synapses. In its computa…
Category: neuroscience – Page 290
Step forward platelet factor 4 (PF4): this substance in the blood has been linked to the mental boost we get from exercise, the benefits of blood transfusions, and a protein associated with longevity, in three separate studies.
All three processes promote cognitive enhancement, meaning PF4 is something of a superpowered blood factor. The research was carried out by two teams from the University of California San Francisco (UCSF) in the US and the University of Queensland in Australia.
Platelets are cell fragments that play a critical role in the clotting process. Aside from serving as physical plugs that staunch bleeding, these small, non-nucleated chunks of bone marrow cell contain granules that release chemicals to promote aggregation.
Researchers at The University of Queensland have found an anti-aging function in a protein deep within human cells.
Associate Professor Steven Zuryn and Dr. Michael Dai at the Queensland Brain Institute have discovered that a protein called ATSF-1 controls a fine balance between the creation of new mitochondria and the repair of damaged mitochondria.
Summary: Researchers uncovered how distinct neuron types in the Drosophila fruit fly differentiate their functions despite originating from a similar genetic framework.
In the study, two closely related neuronal subtypes expressed more than 800 different genes (~5% of the fly genome) differently. This gene expression directly influenced the observable distinctions between the neuron types.
The findings help illuminate the brain’s intricate cell development and how disease could affect it.
The Human Brain Project wraps up in September after a decade. Nature examines its achievements and its troubled past.
(NewsNation) — Eye scans could be able to detect Parkinson’s disease several years before the presentation of other symptoms, according to a new study.
The findings, published in the journal Neurology, add to growing evidence that eye scans could help detect neurodegenerative diseases including Alzheimer’s and multiple sclerosis.
Researchers at University College Hospital and the Moorfields Eye Hospital used a type of 3D scan known as optical coherence tomography (OCT) which detected Parkinson’s disease markers an average of seven years before clinical symptoms.
Human Brain Project (HBP) researchers from Forschungszentrum Jülich and the University of Cologne (Germany) have uncovered how neuron densities are distributed across and within cortical areas in the mammalian brain. They have unveiled a fundamental organizational principle of cortical cytoarchitecture: the ubiquitous lognormal distribution of neuron densities.
Numbers of neurons and their spatial arrangement play a crucial role in shaping the brain’s structure and function. Yet, despite the wealth of available cytoarchitectonic data, the statistical distributions of neuron densities remain largely undescribed. The new HBP study, published in Cerebral Cortex, advances our understanding of the organization of mammalian brains.
The team based their investigations on nine publicly available datasets of seven species: mouse, marmoset, macaque, galago, owl monkey, baboon and human. After analyzing the cortical areas of each, they found that neuron densities within these areas follow a consistent pattern—a lognormal distribution. This suggests a fundamental organizational principle underlying the densities of neurons in the mammalian brain.
The strange science experiment that blew a worm’s head off… and blew our minds.
This interview is an episode from @The-Well, our publication about ideas that inspire a life well-lived, created with the @JohnTempletonFoundation.
Watch Michael Levin’s next interview ► https://youtu.be/XHMyKOpiYjk.
Michael Levin, a developmental biologist at Tufts University, challenges conventional notions of intelligence, arguing that it is inherently collective rather than individual.
https://youtube.com/watch?v=wc8qRKm9MLs&feature=share7
Boltzmann brain is another bizarre consequence of laws of physics. It’s a configuration of matter, similar to our brains; a statistical fluctuation risen out of thermal equilibrium, a conscious observer created by a sudden decrease in entropy, having false memories of a grand structure exactly like our universe.
Given enough time, every single possibility allowed by the physical laws in our most likely closed universe must eventually occur, including one with a fluctuated brain, sitting in the middle of nowhere, having the exact same thoughts that you are having right now.
Boltzmann brains are speculative and inevitable at the same time. There is a serious chance that you might be indeed one of those brains, experiencing your false memories within a fake universe which is nothing but a delusion.
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MIT researchers have created a detailed map of neuron activity in the C. elegans worm, revealing how neurons encode behavior. Using cutting-edge technology, they discovered neurons’ capability to adjust their encoding based on various factors and conditions. Their findings provide a comprehensive neural behavior atlas for further studies.
MIT
MIT is an acronym for the Massachusetts Institute of Technology. It is a prestigious private research university in Cambridge, Massachusetts that was founded in 1861. It is organized into five Schools: architecture and planning; engineering; humanities, arts, and social sciences; management; and science. MIT’s impact includes many scientific breakthroughs and technological advances. Their stated goal is to make a better world through education, research, and innovation.