We do this through advanced single-cell molecular analysis techniques, such as single-cell RNA sequencing and electrophysiology, combined with cutting-edge imaging technologies that provide a comprehensive view of how our brains are organized; what their cellular makeup is; how those cells connect, develop, and function; and the complex relationship between these factors.
the Beauty with Brain full movie hd download
Your kitten is on the kitchen counter. She's about to step onto a hot stove. You have only seconds to act. Accessing the signals coming from your eyes, your brain quickly calculates when, where, and at what speed you will need to dive to intercept her. Then it orders your muscles to do so. Your timing is perfect and she's safe. No computer can come close to your brain's awesome ability to download, process, and react to the flood of information coming from your eyes, ears, and other sensory organs.
Narrator: The concept of uploading an entire human brain - thoughts, feelings, memories, the whole shebang - and running it on a computer is called whole brain emulation. And there are three main areas of technology that need to advance for it to be possible: scanning, processing power and memory, and environment. Let's start with scanning, since researchers will have to start there too. The first bottleneck we're gonna hit is the connectome. The connectome is a complete map of the brain, basically the pot of gold at the end of a rainbow for neuroscientists. Brains are wildly complex. Scientists have only been able to map the complete connectome of one creature, a nematode, and a nematode's brain has about 302 neurons. A human brain has 86 billion, not to mention the 10,000 or so connections each neuron makes with other neurons. Our current brain-scanning tech, like MRIs and MEGs, just aren't good enough to map them all out. There are other methods that could show us a clearer picture, but they tend to be destructive.
Narrator: And if a SIM is conscious, it'll need to exist in a place and interact with things. In "Black Mirror," the characters spend the rest of eternity in a luxurious beach town. Right now, our virtual reality capabilities aren't good enough to create a paradise like that. To experience virtual reality in the way that humans experience actual reality, SIMs would need high-fidelity sensors and systems to sense the world around them. Graphics, at least, are constantly improving, thanks to the speed and size of the video-game industry. It's the rest of the senses that will need major work, everything from tasting a rum and Coke to feeling the pain of a car accident. The bandwidth and signal complexity needed for this shouldn't be underestimated. And while virtual reality isn't the only option for a SIM, actual reality would still require a few upgrades. First, they'd need a robot avatar, and robots are generally really good at only one thing. One of the world's most advanced humanoid robots' claim to fame is its ability to climb stairs. Relatively impressive, but not even close to replicating the experience of having an actual human body. Virtual reality offers a human experience and more. In a digital world, SIMs could fly or teleport or even turn into a lion for a distinctly nonhuman experience. So, once we figure out the technical side of whole brain emulation, there's still the philosophical part of the equation. Would that emulation still be you?
Beauty is the form under which the intellect prefers to study the world. All privilege is that of beauty; for there are many beauties; as, of general nature, of the human face and form, of manners, of brain, or method, moral beauty, or beauty of the soul.
The symptoms of BPPV include dizziness or vertigo, lightheadedness, imbalance, and nausea. Activities which bring on symptoms will vary among persons, but symptoms are almost always precipitated by a change of position of the head with respect to gravity. Getting out of bed or rolling over in bed are common "problem" motions. Because people with BPPV often feel dizzy and unsteady when they tip their heads back to look up, sometimes BPPV is called "top shelf vertigo." Women with BPPV may find that the use of shampoo bowls in beauty parlors brings on symptoms. Some Yoga postures or Pilates positions are triggers. An intermittent pattern is common. BPPV may be present for a few weeks, then stop, then come back again.
A provider can make the diagnosis of BPPV based on history, findings on physical examination, and the results of vestibular and auditory tests. Often, the diagnosis can be made with history and physical examination alone. The figure above illustrates the Dix-Hallpike test. In this test, a person is brought from sitting to a supine position, with the head turned 45 degrees to one side and extended about 20 degrees backward. A positive Dix-Hallpike tests consists of a burst of nystagmus (jumping of the eyes). The eyes jump upward as well as twist so that the top part of the eye jumps toward the down side. Click here to see a movie of BPPV nystagmus. (13 meg download) -- it takes about 10 seconds to get going.
Electronystagmography (ENG) testing may be needed to look for the characteristic nystagmus (jumping of the eyes) induced by the Dix-Hallpike test (also see here PC BPPV). For diagnosis of BPPV with laboratory tests, it is important to have the ENG test done by a laboratory that can measure vertical eye movements. A magnetic resonance imaging (MRI) scan will be performed if a stroke or brain tumor is suspected. An oVEMP and rotatory chair test can be helpful for difficult diagnostic problems. It is possible but uncommon (5%) to have BPPV in both ears (bilateral BPPV).
One can certainly opt to just wait it out. If you decide to wait it out, certain modifications in your daily activities may be necessary to cope with your dizziness. Use two or more pillows at night. Avoid sleeping on the "bad" side. In the morning, get up slowly and sit on the edge of the bed for a minute. Avoid bending down to pick up things, and extending the head, such as to get something out of a cabinet. Be careful when at the dentist's office, the beauty parlor when lying back having ones hair washed, when participating in sports activities and when you are lying flat on your back. Similarly be cautious with chiropractic treatments that may jostle the head.
Be careful to avoid head-extended position, in which you are lying on your back, especially with your head turned towards the affected side. This means be cautious at the beauty parlor, dentist's office, and while undergoing minor surgery. Try to stay as upright as possible. Exercises for low-back pain should be stopped for a week. No "sit-ups" should be done for one week and no "crawl" swimming. (Breast stroke is OK.) Also avoid far head-forward positions such as might occur in certain exercises (i.e. touching the toes). Do not start doing the Brandt-Daroff exercises immediately or 2 days after the Epley or Semont maneuver, unless specifically instructed otherwise by your health care provider.
The procedure involves the use of high-frequency sound waves directed with pinpoint precision by magnetic resonance imaging to ablate, or burn, the focal point deep within the brain that is causing tremors. Patients are fitted with a stereotactic frame affixed to a specialized helmet that combines the focused energy of more than 1,000 high-frequency sonic beams directed through the skull. The procedure involves no need for direct access to the brain by cutting through the skull. Nor does it involve radiation, such as with previously developed gamma knife technology, which combines beams of radiation to ablate tumors.
Drs. Ahmed Raslan, M.D., and Maryam Shahin, M.D., talk about the procedure. Patient Jean Henderson undergoes high-frequency ultrasound brain surgery led by OHSU neurosurgeon Ahmed Raslan and his team on Wednesday, March 30, 2022. Jean Henderson is the first patient to undergo this treatment in Oregon. She has had a tremor for four years, which limited her abilities to care for herself, and this surgery corrected that tremor in her right hand/arm in just a few hours with no incision. (OHSU/Christine Torres Hicks)
If you use TMS on specific parts of the prefrontal cortex, the part of your brain behind your forehead that is particularly important for decision-making, you suddenly like different kinds of art. This kind of tiny change leads to significant changes in aesthetic appreciation of faces, bodies, and artworks. For example, the specific placement of TMS electrodes has made people find abstract art less beautiful. Put the electrodes elsewhere, and people appreciate art depicting humans less, probably because it interferes with how the brain perceives symmetry in faces.
The paper traces back to 2016, when an 87-year-old man with bleeding between his skull and brain sought treatment at a Canadian hospital. The doctors, including Zemmar, removed the clot, but three days later, the man developed seizures.
The EEG showed that, 15 seconds before the patient's heart stopped beating, he experienced high-frequency brainwaves called gamma oscillations, as well as some slower oscillations including theta, delta, alpha, and beta. These patterns are associated with concentration, dreaming, meditating, memory retrieval, and flashbacks, ZME Science reported.
The findings square with some anecdotal reports of near-death experiences, in which people say life's most intensely emotional moments replay before their eyes. When someone almost dies, Zemmar said, "the brain may still trigger those responses so that these patients perceive that near-death experience with the replay and everything, but then come back."
"This study appears to confirm this by identifying a potential brain marker of lucidity at the end of life," Parnia, who was not involved in Zemmar's study, added. "It may be that as multiple parts of the brain are shutting down with death, this leads to disinhibition of other areas that help humans gain insights into other dimensions of reality, that are otherwise less accessible." 2ff7e9595c
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