75 years after Erwin Schrödinger’s prescient description of something like DNA, we still don’t know the ‘laws of life.’
Having undergone two aneurysm surgeries, Sandi Rodoni thought she understood everything about the procedure. But when it came time for her third surgery, the Watsonville, California, resident was treated to a virtual reality trip inside her own brain.
Stanford Medicine is using a new software system that combines imaging from MRIs, CT scans and angiograms to create a three-dimensional model that physicians and patients can see and manipulate — just like a virtual reality game.
Guided by lasers, fluorescence and real-time imaging, Stanford surgeons develop new ways to enhance precision.
Virgin Galactic successfully flew its first paying customers to the final frontier Thursday, a long-awaited achievement that puts it back on track in the emerging private spaceflight sector.
Italian Air Force officers unfurled their nation’s flag and peered out windows at the curve of Earth while enjoying a few minutes of weightlessness at 52.9 miles (85.1 kilometers) above sea level.
“It was a beautiful ride,” Colonel Walter Villadei told reporters at a press conference, adding that his favorite moment was seeing the contrast between the black of space and the planet beneath.
Quantum physics governs the world of the very small and that of the very cold. Your dog cannot quantum-tunnel her way through the fence, nor will you see your cat exhibit wave-like properties. But physics is funny, and it is continually surprising us. Quantum physics is starting to show up in unexpected places. Indeed, it is at work in animals, plants, and our own bodies.
We once thought that biological systems are too warm, too wet, and too chaotic for quantum physics to play any part in how they work. But it now seems that life is employing feats of quantum physics every day in messy, real-world systems, including quantum tunneling, wave-particle duality, and even entanglement. To see how it all works, we can start by looking right inside our own noses.
The human nose can distinguish over one trillion smells. But how exactly the sense of smell works is still a mystery. When a molecule referred to as an odorant enters our nose, it binds to receptors. Initially, the prevailing theory held that these receptors used the shape of the odorants to differentiate smells. The so-called lock and key model suggests that when an odorant finds the right receptor, it fits into it and triggers a specific smell. But the lock and key model ran into trouble when tested. Subjects were able to tell two scents apart, even when the odorant molecules were identical in shape. Some other process must be at work.
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New products like ChatGPT have captivated the public, but what will the actual money-making applications be? Will they offer sporadic business success stories lost in a sea of noise, or are we at the start of a true paradigm shift? What will it take to develop AI systems that are actually workable?
To chart AI’s future, we can draw valuable lessons from the preceding step-change advance in technology: the Big Data era.
In response to Bernardo Kastrup’s scathing criticisms of materialist explanations of the states of consciousness induced by psychedelics, David Nutt argues that we don’t need to adopt an untestable metaphysical worldview to explain the subjective richness of psychedelic experiences.In response to Bernardo Kastrup’s scathing criticisms of materialist explanations of the states of consciousness induced by psychedelics, David Nutt argues that we don’t need to adopt an untestable metaphysical worldview to explain the subjective richness of psychedelic experiences.
Let’s start with where we agree. It doesn’t make intuitive sense that alterations in (increased) complexity of brain waves could explain the whole range of subjective experiences that are reported under the influence of psychedelics. I agree they probably don’t in a direct sense — it seems to me much more likely that they are correlated because they both derive from a common change in another system or systems. Despite Bernardo’s criticisms and scepticism, I think we can plausibly develop theories as a result of neuroscience and neuroimaging research coupled with simultaneous acquisition of subjective effects that help explain the altered state of consciousness produced by psychedelics.
Where those might be is the question — and I will come back to it later — but at this point I think it is reasonable to suggest that the primary visual hallucinations (the Christmas tree lights) probably reflect a psychiatry-induced disruption of the layer 5 neurons in the visual cortex. This would degrade the ability of the complex cortical network that creates vision by integrating retinal inputs. Physiological studies of the neuronal workings of non-human visual systems predict that simple geometric shapes, colours and movement are the primary processes that are extracted from retinal inputs and from which more complex visual schema are then created. Psychedelics disrupt these higher-level constructions so allow the user to “see” the primary workings of the visual system that are not normally accessible to consciousness.
I want one so I can do my chores better. But.
Seriously, this is cool.
Continue reading “Imagine a multi-limbed cyborg world, made possible by these wearable robot arms” »
Now that’s cool. I’d like one to keep harass me cats and dog haha actually it be useful. Am wondering what ever happened to the indoor Amazon security drone.
Advanced family robots from Moorebot.
