Archive for the ‘biological’ category: Page 11
Oct 4, 2024
Why Is Anything Conscious?
Posted by Dan Breeden in categories: biological, mathematics, neuroscience
We tackle the hard problem of consciousness taking the naturally-selected, self-organising, embodied organism as our starting point. We provide a mathematical formalism describing how biological systems self-organise to hierarchically interpret unlabelled sensory information according to valence and specific needs. Such interpretations imply behavioural policies which can only be differentiated from each other by the qualitative aspect of information processing. Selection pressures favour systems that can intervene in the world to achieve homeostatic and reproductive goals. Quality is a property arising in such systems to link cause to affect to motivate real world interventions. This produces a range of qualitative classifiers (interoceptive and exteroceptive) that motivate specific actions and determine priorities and preferences.
Oct 4, 2024
Engineers create a chip-based tractor beam for biological particles
Posted by Saúl Morales Rodriguéz in categories: biological, computing, particle physics, tractor beam
Traditional optical tweezers, which trap and manipulate particles using light, usually require bulky microscope setups, but chip-based optical tweezers could offer a more compact, mass manufacturable, broadly accessible, and high-throughput solution for optical manipulation in biological experiments.
However, other similar integrated optical tweezers can only capture and manipulate cells that are very close to or directly on the chip surface. This contaminates the chip and can stress the cells, limiting compatibility with standard biological experiments.
Using a system called an integrated optical phased array, the MIT researchers have developed a new modality for integrated optical tweezers that enables trapping and tweezing of cells more than a hundred times further away from the chip surface.
Oct 2, 2024
Microtubules and Consciousness: Exploring Energy Transfer and Quantum Theories
Posted by Scott Bleackley in categories: biological, neuroscience, quantum physics
Send us a text.
Put simply, the brain is not too warm or wet for consciousness to exist as a wave that connects with the universe.
For decades, Penrose has been working with anesthesiologist Stuart Hameroff on a theory of consciousness called Orchestrated Objective Reduction (Orch OR). Penrose primarily handles the physics of Orch OR, whereas Hameroff handles the biology. Their theory addressed serious gaps in established scientific frameworks spanning physics, neuroscience and psychology. All, some or none of the hypotheses in this theory might prove out experimentally. See the paper below as a step towards proof.
Oct 2, 2024
Researchers harness liquid crystal structures to design simple, yet versatile bifocal lenses
Posted by Saúl Morales Rodriguéz in categories: biological, computing, virtual reality
Researchers have developed a new type of bifocal lens that offers a simple way to achieve two foci (or spots) with intensities that can be adjusted by applying external voltage. The lenses, which use two layers of liquid crystal structures, could be useful for various applications such as optical interconnections, biological imaging, augmented/virtual reality devices and optical computing.
Oct 1, 2024
Scientists Find Plastic-Eating Fungus Feasting on Great Pacific Garbage Patch
Posted by Quinn Sena in category: biological
Does nature have to do everything itself?
An international cohort of marine scientists discovered an ocean-borne fungus chomping through plastic trash suspended in the Great Pacific Garbage Patch, as detailed in a new study published in the journal Science of the Total Environment.
Dubbed Parengyodontium album, the fungus was discovered among the thin layers of other microbes that live in and around the floating plastic pile in the North Pacific.
Sep 28, 2024
World’s most powerful X-ray laser to get 3,000 times more powerful
Posted by Shailesh Prasad in categories: biological, quantum physics
The Linac Coherent Light Source (LCLS), the world’s most powerful X-ray laser located at the SLAC National Accelerator Laboratory in the US, is set for a major upgrade that will increase its X-ray energy 3,000-fold, a press release shared with Interesting Engineering said.
When complete, the upgrade will let scientists explore atomic-scale processes in their search for answers in biology, materials science, quantum physics, and much more.
Sep 27, 2024
The Evolution of Intelligence: Noogenesis and the Future of Life
Posted by Paul Battista in categories: biological, computing, singularity, space
The study of computational biology is essential to understanding this transition. By exploring how life processes information, we gain insights into the nature of consciousness and intelligence itself. Computational models are key to revealing how systems organize, adapt, and evolve toward greater complexity and self-awareness. This progression suggests a future where intelligence is no longer bound by biological limitations but extends into the realm of artificial systems, creating a symbiotic relationship between humans and machines.
Ultimately, NOOGENESIS challenges traditional scientific paradigms by framing the universe as an informational “self-simulating” entity, where consciousness plays a central role in its evolutionary processes. The origins of life, the evolution of intelligence, and the potential for a post-Singularity future are all part of this grand narrative. By embracing this view, we can cultivate a more comprehensive understanding of the universe and our place within it—one that recognizes the fundamental role of consciousness in shaping reality and guiding evolution toward the apotheosis of Omega Singularity, the final convergence of intelligence and complexity.
Sep 21, 2024
Foundation models build on ChatGPT tech to learn the fundamental language of biology
Posted by Shubham Ghosh Roy in categories: biological, information science, robotics/AI
Scientists are using ever more sophisticated AI algorithms trained on vast, unlabeled datasets to develop models that can ‘interpret’ biological data to help guide biomolecule design.
Sep 21, 2024
Spiking Neural Networks and Their Applications: A Review
Posted by Dan Breeden in categories: biological, drones, neuroscience, robotics/AI
The past decade has witnessed the great success of deep neural networks in various domains. However, deep neural networks are very resource-intensive in terms of energy consumption, data requirements, and high computational costs. With the recent increasing need for the autonomy of machines in the real world, e.g., self-driving vehicles, drones, and collaborative robots, exploitation of deep neural networks in those applications has been actively investigated. In those applications, energy and computational efficiencies are especially important because of the need for real-time responses and the limited energy supply. A promising solution to these previously infeasible applications has recently been given by biologically plausible spiking neural networks. Spiking neural networks aim to bridge the gap between neuroscience and machine learning, using biologically realistic models of neurons to carry out the computation. Due to their functional similarity to the biological neural network, spiking neural networks can embrace the sparsity found in biology and are highly compatible with temporal code. Our contributions in this work are: (i) we give a comprehensive review of theories of biological neurons; (ii) we present various existing spike-based neuron models, which have been studied in neuroscience; (iii) we detail synapse models; (iv) we provide a review of artificial neural networks; (v) we provide detailed guidance on how to train spike-based neuron models; (vi) we revise available spike-based neuron frameworks that have been developed to support implementing spiking neural networks; (vii) finally, we cover existing spiking neural network applications in computer vision and robotics domains. The paper concludes with discussions of future perspectives.
Keywords: spiking neural networks, biological neural network, autonomous robot, robotics, computer vision, neuromorphic hardware, toolkits, survey, review.