Joint longitudinal modelling of brain atrophy, white matter damage, and cognition in 543 older adults yielded a brain maintenance index. Poorer mental health, lower openness, and faster biological ageing predicted reduced maintenance.
Category: biological – Page 4
Scientists Keep Teaching Life to Play Doom, But Why?
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Hello and welcome! My name is Anton and in this video, we will talk about why Doom is used in scientific experiments involving learning.
Links:
https://arxiv.org/pdf/2602.11632
https://corticallabs.com/cl1
• Rats in Doom.
https://theconversation.com/how-scien…
#doom #biology #learning.
0:00 Doom runs on everything.
1:03 Brain organoids and why they are used.
2:50 New breakthrough — a biological computer.
3:50 How cells learns to play Doom.
5:10 Rats and Doom.
6:20 Organoids and engineering problems.
7:00 Implications for biology and information sciences.
9:08 Conclusions.
Enjoy and please subscribe.
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Scientists discovered the brain doesn’t make decisions the way we thought
A new study suggests the brain begins making decisions much earlier than scientists previously thought. Researchers found that even primary sensory regions are influenced by higher brain areas through rapid feedback loops, rather than simply passing information forward. This more dynamic view of brain function could help engineers design future AI systems that think more like biological brains while using far less power.
Biodegradation of polyethylene by the marine fungus Parengyodontium album
Year 2024 Marine fungus that eats plastic.
Plastic pollution in the marine realm is a severe environmental problem. Nevertheless, plastic may also serve as a potential carbon and energy source for microbes, yet the contribution of marine microbes, especially marine fungi to plastic degradation is not well constrained. We isolated the fungus Parengyodontium album from floating plastic debris in the North Pacific Subtropical Gyre and measured fungal-mediated mineralization rates (conversion to CO2) of polyethylene (PE) by applying stable isotope probing assays with 13 C-PE over 9 days of incubation. When the PE was pretreated with UV light, the biodegradation rate of the initially added PE was 0.044%/day. Furthermore, we traced the incorporation of PE-derived 13 C carbon into P. album biomass using nanoSIMS and fatty acid analysis.
Optically detected and radio wave-controlled spin chemistry in flavoproteins
An incredible paper by Meng et al. showing how the fluorescence of the flavoproteins iLOV and cryptochrome can be modulated by RF signals when held under certain magnetic fields. This work may provide a foundation for more RF tools which allow manipulation of biological processes.
Radio waves are shown to modulate fluorescence and associate spin chemistry in proteins.
What Makes Information Physical? | Chiara Marletto
What makes information a real part of physics rather than just a way of describing the world?
Chiara Marletto explains how constructor theory grounds information in physical reality, why information is not merely a human concept, and how knowledge differs from information by possessing the ability to persist and shape the world around it.
0:00 Constructor Theory and the Physics of Information 1:49 Is Information Fundamental to Reality? 4:42 Constructor Theory Beyond Quantum Information 6:31 Information, Knowledge, and Resilience 10:17 Why Knowledge Emerges Above Fundamental Physics.
Chiara Marletto is a Research Fellow at Wolfson College, University of Oxford. She holds degrees from the universities of Oxford and Turin. Her main research focus is in theoretical physics, and she also pursues interests in theoretical biology, epistemology, and Italian literature. The Science of Can and Can’t: A Physicist’s Journey Through the Land of Counterfactuals is her first trade book.
More from Chiara Marletto on Closer To Truth: Closer To Truth: The Podcast: • Closer To Truth: The Podcast Closer To Truth contributors: https://closertotruth.com/contributor… to Closer To Truth: / @closertotruthtv Join the Community:
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Mind uploading: Can human brains be digitally copied? | Michael Levin and Lex Fridman
Lex Fridman Podcast full episode: • Michael Levin: Hidden Reality of Alien Int…
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Michael Levin is a biologist at Tufts University working on novel ways to understand and control complex pattern formation in biological systems.
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Biological Robots: https://arxiv.org/abs/2207.00880
Classical Sorting Algorithms: https://arxiv.org/abs/2401.05375
Aging as a Morphostasis Defect: https://pubmed.ncbi.nlm.nih.gov/38636…
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Beyond Agentic AI: The Emergence Of Cognitive AI Ecosystems
In the next decade, AI will likely undergo more significant changes than only becoming more independent; it will also grow more cognitive. AI systems will act as interconnected ecosystems that are capable of contextual awareness, cooperative reasoning, ongoing learning, and adaptive decision-making in almost every facet of society, rather than isolated applications.
Large language models of today are remarkable due to their ability to produce and anticipate information. Persistent memory, multimodal perception, long-term planning, causal reasoning, and self-directed learning within strictly regulated bounds will probably be characteristics of the AI of 2036. Similar to biological neural networks, millions of specialized AI agents will work together to create dynamic intelligence fabrics that continuously optimize national defense, manufacturing, transportation, financial markets, healthcare delivery, and energy grids.
The line between workforce and software will become increasingly hazy. Hundreds of thousands of AI agents working continuously alongside human employees may be employed by organizations as digital workforces. A customized constellation of AI advisers, researchers, legal assistants, financial analysts, engineers, and cybersecurity specialists working around the clock could be present for every knowledge worker. This shift signifies the emergence of an entirely new digital labor force in addition to automation.
Which Quantum Interpretations Survive Constructor Theory? | Chiara Marletto
Can a new framework for physics help evaluate competing interpretations of quantum mechanics?
Chiara Marletto examines Copenhagen, Bohmian mechanics, Many Worlds, collapse theories, QBism, relational quantum mechanics, and other approaches through the lens of constructor theory. Rather than choosing a winner, she asks which interpretations are compatible with deeper physical principles.
0:00 Constructor Theory as a Framework for Quantum Foundations.
1:25 Copenhagen and Bohmian Mechanics: Where Constructor Theory Parts Ways.
4:26 Many Worlds and Compatible Interpretations.
7:21 QBism, Relational Quantum Mechanics, and Superdeterminism.
13:14 Constructor Theory Beyond Quantum Interpretations.
Chiara Marletto is a Research Fellow at Wolfson College, University of Oxford. She holds degrees from the universities of Oxford and Turin. Her main research focus is in theoretical physics, and she also pursues interests in theoretical biology, epistemology, and Italian literature. The Science of Can and Can’t was her first trade book.
More from Chiara Marletto on Closer To Truth:
Closer To Truth: The Podcast: • Closer To Truth: The Podcast.
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