The truth behind the medical milestone that has returned activity to a frozen brain

One of the wishes of many people is to live forever and they may have in mind ending up with their head stuck in a jar like in the Futurama series or becoming cryogenized for an eternity until the key to eternal life is found. But we are still quite far from that, although right now science has been able to recover the activity of a brain after ‘killing’ it. Far from the resurrection. In recent days we have been sold the idea that we are facing a new way of ‘resurrecting’ the dead or achieving the wish of eternal life, but the reality is that the latest thing science has done is recover short-term functional activity in mouse brain tissue after subjecting it to vitrification. What was done. Historically, the great enemy of cryopreservation of human tissue have been ice crystals. This is because when we freeze tissue, the water in the cells expands and crystallizes, perforating the cell membranes and destroying the structure from within, making it impossible for that tissue to come back to life. Something that generates a lot of damage and that goes against the famous cryogenization cabins that promise to wake us up in the future when science has advanced a lot. But now, instead of traditional freezing, the latest experiment used powerful cryoprotectants and took mouse brain tissue to -150ºC. This process transforms the liquids into a glass-like state, preventing the formation of these crystals, and when they wanted to ‘awaken’ the tissue again, ultra-rapid reheating was simply done to prevent crystallization from destroying the samples. What was achieved. The original article shows extraordinary results, since the amount of neuronal properties that survived were many by ensuring that the cells did not collapse and the tissue returned to consuming energy normally. In addition, the neurons maintained their ability to fire signals and also the possibility of creating new connection networks, which is essential for learning and memory. Why does it matter? As he warns Nature Newsthese results must be read with caution, since it is mouse tissue, not a complete human brain. And recovering electrical activity in a cut of the hippocampus is not equivalent to restoring the consciousness, identity or life of an entire animal, much less a person. But even if they do not manage to pause our definitive death, the reality is that this can be crucial in the field of research by facilitating the transport and storage of brain samples for study in other places. But it will also allow drugs to be tested on actual brain tissue that has been preserved, perhaps reducing the need to sacrifice so many experimental animals. Images | rawpixel.com on Freepik In Xataka | Alzheimer’s leaves its mark decades before showing its face: keeping vitamin D at bay is already a promising shield

Our brain is “rotting” based on infinite scrolling. Someone has left their cell phone for 14 days to see if there is a way back

Today it is a reality that most of us live glued to a screen, and this is something that is documented in studies that point out, for example, that on average we review an average of 200 times the phone throughout the day, which is equivalent to looking at it approximately every five minutes. In fact, 46% of users consider themselves “dependent” on the device and 53% say they have never spent more than 24 hours without it. But what really happens in our heads if we decide to cut corners and return to the analog era? A test. To answer this question, CNN journalist Bill Weir decided to test this premise to commemorate Apple’s 50th anniversary. In this way, for 14 days Weir kept his iPhone in a box and replaced it with a basic phone like the ones we had 15 years ago, with which we could only send SMS with a non-touch keyboard and a low-resolution camera. From here the sensations he had were observed, but a group of scientists behind him were also monitoring his brain through brain scans. The results. After two weeks of disconnection, the journalist’s reaction times improved by 23%, and his brain activity also increased significantly, causing his brain connectivity to become more coordinated and organized. Subjectively, Weir experienced a much better recovery in his ability to concentrate and also noted a sharp decrease in the need to consume social media after the first week. The changes. It is no coincidence that the term “brain rot”, translated as brain rot, was crowned the neologism of the year in 2024 for the Oxford dictionary, since it is a concept closely linked to be swiping all the time with your mobile. And clearly the excessive use of smartphones and all the applications they contain is leaving a physical mark on our brain anatomy. It’s proven. MRI-based research, including a National Library of Medicine publication in 2023, they point out that problematic smartphone use is associated with a reduction in gray matter in the brain. And if we go into something more specific, it was seen that there was a smaller volume in the anterior cingulate cortex, the orbitofrontal cortex, the fusiform gyrus and the striatum. These areas are fundamental for emotional regulation, decision making and impulse control, making these alterations similar to those observed in addictions to harmful substances such as drugs. And supported. A study published in 2025 analyzed individuals for 72 hours without a mobile phone using functional magnetic resonance imaging, and the results indicated that withdrawal triggered brain activations identical to those of addictive withdrawal syndromes, followed by notable cognitive improvements. Digital amnesia. Beyond anatomy, our daily cognitive abilities are in free fall, and science suggests that the average attention time before an interruption has gone from about 2.5 minutes to about 47 seconds, blaming the accelerated digital pace here. And the culprit again is the smartphone, since a study published in 2017 analyzed to 520 participants and demonstrated that the simple presence of the smartphone on the table, even face down, consumes and exhausts our cognitive attention resources. This is why we should opt for better control of the time we dedicate to social networks or the smartphone in general, since the benefits of quitting are many. Images | freepik In Xataka | Smartphones are destroying our memories. The big question is whether we should care

They have the first brain implant ready for commercial use

With the data centersthe astronomical investment in artificial intelligence and plans for robotize factoriesthe most dystopian technological conversation has left out an important player: the cyborgs. If a few years ago the bells began to ring about the brain chipssoon fell into the background. He Neuralink Elon Musk moved on, but the rest of the world seemed to have forgotten. The rest of the world… except China, which already approves commercial implants. It’s the result of making brain chips a national priority. In short. There are several Chinese companies making significant progress in this field. NeuroXess, BrainCo -one of the “six little chinese dragons”- or NeuCyber ​​are two of the best known in this world, at the moment, and one called Neuracle Medical Technology has just achieved a milestone by becoming the first company that can sell an invasive brain-computer interface device in the world. It was a few days ago when the National Medical Products Administration granted marketing approval to the company, and once again puts on the table that China is following a very different strategy from that of the rest of the world. As with AI, while the West insists on increasingly powerful and faster models, China is looking for models that resonate with the general public with the aim of monetizing as soon as possible. The implant. The device is not much different from what we already know. It is a small system about the size of a coin that is placed on the outer surface of the brain. The process is minimally invasive because, although surgery is required, it does not penetrate the brain tissue. Surgeons make a small incision in the skull and electrodes are placed on the membrane surrounding the brain. This is where they can read the neural signals and where the “magic” begins: if the person thinks about grabbing an object with their hand, the SoC decodes the signal and transmits the order to a mechanical glove, which goes towards the object and closes the pneumatic fingers. Requirements. Obviously, it is desirable to never have to use a device of this type, since that would mean that you cannot use your own limbs. The regulatory body has put a limit to people who can use it: be between 18 and 60 years old, have suffered a cervical spinal cord injury, have some mobility in the upper arm, but without the ability to hold objects with their hand and the injury has been diagnosed at least one year before requesting the chip. The Neuralink Advantage. As we say, there are several other companies pursuing these advances and permits, and NeuCyber ​​has come to the fore to detail How is your model going? The Beinao-1 is the one they have been working on in recent years and is very similar to the one detailed: an implant that is placed in the outer membrane of the brain and is already being tested in about seven patients. The company has stated that they are working on a new generation called Beinao-2 (to the surprise of absolutely no one), but they have also said something more interesting: their implant is about three years behind Neuralink’s. And the key is not so much the technological superiority of Elon Musk’s model as the availability of patients for testing. For Beinao-1’s seven patients, Neuralink has more than 20. According to the company’s boss, this availability of clinical trials is what gives Neuralink a clear advantage. And something also interesting is that the new generation of Beinao changes its concept a little. If the first is semi-invasive, the second is completely invasive, using flexible electrodes implanted directly into the brain tissue. Strategic priority. At the moment, Beinao-2 is in animal testing and Beinao-1 is being analyzed in those seven humans, but with the hope of expanding the trials to 50 patients this 2026. We will see if, as the number of patients and real-world data collected increases, the system advances at a better pace, but what is clear is that China is not going to let off the accelerator. To say that these brain-computer interfaces are a priority national is not to magnify the issue. For decades, the Government has had something called the “Five Year Plan” that establishes objectives to be met during the five years following each review of the plan, and this technology, together with quantum computinghe 6G deploymentthe artificial intelligence Physical AI (robots with artificial intelligence, basically) is already within government-funded programs. That is why, from now on, we will begin to see a lot of news about companies that are beginning to promote these implants. And unlike other current technologies, which remains to be seen to what extent they help humanity, recovering mobility is an advance worth pursuing. Image | Mike Cai Chen In Xataka | The large Chinese AI and robotics companies have something in common: their chief scientists are from generation Z

We thought matcha tea was just an internet fad. Science has seen that it “hacks” our brain against allergies

He matcha tea is beginning to be a standardized drink among many people who need get up with one in your handslike those of us who need coffee to wake up. Something that has also been accompanied by the opening of a large number of establishments specialized in its production. And although for many people it may seem like a joke or an expensive fad promoted by internet gurus and people closest to Eastern countries, the truth is that it has a large number of benefits that do not stop growing. Its component. Matcha tea hides a biochemical profile that far exceeds that of conventional green teaand the key lies in how it is grown and consumed. Precisely by ingesting the whole powdered leaf, we get a very high concentration of EGCG (epigallocatechin gelato), L-theanine and caffeine. Its benefits. One of the most important is that we are facing a great antioxidantand in this way studies suggest that matcha drastically reduces oxidative stress and key inflammatory markers such as IL-6. In fact, in some trials, its ability to restore cellular homeostasis exceeds that of vitamin C. Additionally, the synergy between caffeine and L-theanine is the real productivity “trick.” Daily consumption has been shown to moderate fatigue and improve spatial learning and, in addition, upregulates the brain-derived neurotrophic factorwhich enhances memory without altering the sleep cycle. Metabolic impact. In high-fat diet models, matcha suppresses weight gain and fat accumulation in the liver. In humans, trials show better glycemic control and an improvement in the lipid profile, lowering ‘bad’ cholesterol (bad in many quotes) and raising good cholesterol. Its role in allergies. As if all this were not enough, a recent study published at the beginning of this month of March has put an unexpected finding on the table: matcha can be an ally against allergic rhinitis. Something that is welcomed with open arms right this spring where a very tough allergic season is expected. In this case, the team led by Osamu Kaminuma, from Hiroshima University, administered oral doses of matcha of 250 mg/kg to sensitized mice. The result was a significant suppression of allergen- and histamine-induced sneezing. Its mechanism. Here matcha did not alter the traditional immune system, which is the one that detects an allergen as an ‘enemy’ and wants to eliminate it at all costs. What it did was suppress neuronal activity in the brain stem, directly blocking the sneeze reflex on a neurological level. Although confirmatory trials in humans are still lacking, and it opens the door to fascinating non-pharmacological clinical use. There are several types. Not all matchas are the same, and you should always opt for the ceremonial quality grade, since it is first harvest, stone ground, bright green in color and with a large amount of antioxidants. In addition, authentic Japanese origin guarantees quality, and you should also avoid those that have been industrially processed. Images | Jason Leung In Xataka | The tea that was born to stop time now runs against it: the matcha crisis in Japan

In 1955, someone secretly stole Einstein’s brain and stored it in mayonnaise jars. That was just the beginning

Seven hours after Albert Einstein’s death, Thomas Harvey was preparing to perform an autopsy on the body at the Priceton Hospital morgue. It was April 18, 1955 and Otto Nathan, friend and executor of the famous physicist, was present: old Albert had become in the “greatest rock star of the 20th century”but he wanted the cult of his person to end there. The pathologist would perform the autopsy, the family would collect the body and secretly cremate it before scattering its ashes in the Delaware River. And so it was. Or, well, that’s what the family believed. Not in my lair. Because inadvertently, without prior documented permission and as quickly as he could, Thomas Harvey removed Einstein’s brain and kept it (in a jar full of formaldehyde). At first he kept it a secret, but no one steals the brain of the great genius of the 20th century to keep it a secret. The news, in a matter of hours, spread like wildfire. And, in fact, on the 20th the New York Times posted that something was happening with the brain. The family panicked, but shortly before publication (and following a fait accompli policy) Harvey managed to convince Hans Albert Einstein, the eldest son, to give him retrospective permission. I imagine Hans didn’t have much room for maneuver: Harvey had the brain in his possession. It was ‘give him permission’ or, perhaps, lose him forever. Einstein’s son set conditions, of course: the main one is that the organ be used for scientific purposes. It wasn’t going to be possible either. Especially because Harvey ‘fell in love’ with the brain and, despite Princeton Hospital’s efforts to have him deposit it, the pathologist repeatedly refused. To the point where, at the end of the year, he is fired. That’s when he took the brain to the University of Pennsylvania and, in a friend’s lab, divided it into about 240 pieces and created 12 sets of slides. Fired and sidelined, Harvey sent 42 of the samples to different forensic experts and neurologists for investigation. That was their plan to return through the front door: the majority did not respond and those who did did not find anything notable. So things really started to go wrong. As a result of his stubbornness, his marriage breaks down. At some point in the 1960s, divorce forces him to take the glass jars containing his brain out of the basement and go to the Midwest. And, deep down, he was lucky. On the one hand, none of the affected institutions wanted to speak publicly about this so as not to compromise their prestige. On the other hand, the courts were not as involved in American life, nor did information flow with the same ease. So found a job in Wichita and he kept the brain in the same refrigerator where he had the beer. Until someone finds it. That someone is Steven Levy, a journalist for New Jersey Monthly. In August 1978, Levy told your brain search of the physical. When she found him in Kansas, Harvey didn’t want to talk, but he quickly loosened his tongue. And, of course, it was a scandal. Throughout the 1980s, he sent samples to some researchers (a Marian Diamond, Berkeley neuroanatomistsent him four samples in a mayonnaise jar), but his ambition was to study it himself in his free time. Things get complicated. Because at the end of the 80s, Harvey lost his license and moved to Lawrence, Kansas, to work in a plastic extrusion factory. He spends his nights getting drunk with William S. Burroughs and welcoming those who come to see him. Convinced by journalists, he did a lot of strange things: from cutting pieces on a cheese board to taking, now in his eighties, a trip to California to talk to Einstein’s granddaughter. Finally, between 1998 and 2007 (when Harvey died), was donating parts from the brain to Princeton Hospital. However, that is the most interesting thing we have been able to get out of this organ of contention: its delirious history is more interesting than what scientists have been able to get out of it. Something that reminds us of a phrase normally attributed to Richard Feynman: “it’s worth having an open mind, but not so much that your brain falls out” (or has it stolen). Image | Taton Moise In Xataka | Einstein’s first violin had passed unnoticed. Until an auction house put it up for sale.

The problem with microrobots is that they don’t have a “brain.” The solution has been to use Einstein’s relativity to guide them

Making robots the size of a piece of human hair is already a reality, but it faces a big problem: they are too small to bring a “brain” on board. And it is logical, since on a microscopic scale there is no space to insert a microchip, batteries or navigation systems, so in a few words we can talk about “dumb robots” that only react to basic stimuli. But here the Einstein’s relativity has given a small solution. The solution. One of the functions of these small robots is precisely in be able to navigate the bloodstream to react to different stimuli. But the big question here is how they can navigate a bloodstream without colliding with each other. Something that was on the mind of a team of researchers from the University of Pennsylvania what have you seen that the key is not in making robots smarter, but in manipulating the “spacetime” through which they move. To understand this thread, you have to think about how gravity works according to the theory of general relativity. Here Einstein taught us that planets do not revolve around the sun because an invisible force pulls them, but because the mass of the Sun curves the fabric of spacetime, as with the Earth, which follows the easiest path through that curved space. To biology. Here the researchers wanted to apply this same mathematical principle to microrobotics, introducing the concept of “artificial spacetimes”. And since microscopic robots move in response to light, the scientists designed light fields projected onto a Petri dish that mimic the curvature of spacetime. In this way, the variations in light they faced acted like “artificial gravity.” In this way, the robot does not need to know where it is or where it is going. It simply turns on and moves forward, since it is the light pattern that “pushes” it to curve its path to avoid obstacles or find the exit from a maze, exactly like a ray of light curves when passing near a massive object in the cosmos. It seems like magic. In the experiment proposed by the researchers, different two-dimensional light labyrinths are projected. In this virtual scenario, they created dark areas that mathematically act as “black holes”, since when the microrobot approaches these areas, the equations that govern your response to light They are formally identical to those of the path of light falling through an extreme gravitational field. In this way, when the microrobot approaches these areas, the equations that govern its response to light are formally identical to those of the path of light falling through an extreme gravitational field. From here, using mapping, scientists managed to get these robots to ‘patrol’ specific areas, avoid obstacles and group together at an exact point. And the most interesting thing is that all this happens without a single processing chip on board the robot, since the “calculation” falls entirely on the geometry of the projected environment. A future doctor. The implications of this advance will now allow microrobots to be freed from the need to have a computer system inside them, which means they can be manufactured cheaply and even made even smaller. From here opens the door to very important medical applicationssince millions of these “reactive robots” can be injected into the human body. The objective here is to use external fields such as magnetic fields that act as a curved spacetime that allows them to move through our circulatory system to release a drug, clean arteries or perform biopsies at the cellular level. Images | Ruben Sukatendel In Xataka | Robots have a problem that no one has solved in decades: they get lost. A Spanish engineer believes she has found the key

What happens to our brain when we pray or meditate, according to neuroscience

Joan of Arc listened to divine voices that guided her steps in battle. Saint Teresa of Jesus described mystical ecstasies that left her paralyzed. For centuries, these experiences have been framed exclusively in the realm of faith and dogma, but modern science has decided to look into the abyss of mysticism with a much more earthly tool: brain scans. It has its science. It is called neurotheology and it is a discipline that is beginning to emerge, although it is not free of controversy. Its objective is not to prove the existence of God as such, but to decipher the neural circuits that light up when humans try to communicate with him. The “neurons of God.” In his recent book “God’s neurons”biologist and researcher Diego Golombek proposes a fascinating hypothesis for the most mystical situations. They point out that many of the visions and extreme spiritual experiences that have been documented by figures who have gone down in history could be closely linked to neurological phenomena such as temporal lobe epilepsy. According to Golombek, these electrical storms in the brain activate regions linked to intense emotions and altered perceptions, creating an experience that the subject interprets as direct contact with divinity. Although the question here is whether there is a ‘God button’ in the brain or an area that is activated when we focus on our spirituality. The short answer here is no. What was known. For years there was speculation about the existence of a “brain module” exclusive to the divine, but classic studies, such as the one carried out in 2006 by neuroscientist Mario Beauregard with Carmelite nuns, refuted this idea. To demonstrate this, he introduced the nuns in fMRI machines and asked them to relive their deepest mystical experiences. Here the results demonstrated that there is no single “God zone” but rather that prayer mobilizes a complex and extensive network that includes the caudate nucleus, the insula and the parietal lobe. This is why God, neurologically speaking, is a team effort. The real impact. Beyond the debate about the origin of visions, neurotheology has found very fertile ground in psychiatry and mental health. Andrew B. Newberg, one of the world’s pioneers in this field and author of “Principles of Neurotheology”, has been documenting for decades how religious practices and meditation physically alter our gray matter. In recent studies from this same 2025, Newberg’s team has addressed the practical applications of neurotheology in integrative psychiatry. The findings are revealing, since people with a consistent religious or spiritual practice show significant correlations with lower levels of depression, anxiety, and greater general well-being. Because? When praying or meditating routinely, there is sustained activation in areas such as the prefrontal cortex, which is responsible for attention and decision making, in addition to alterations in the insula, which suggests that these practices have a protective effect on mental health. For authors such as Newberg or Víctor Páramo Valero himself, these data reject purely materialist and reductionist explanations, since neuroscience does not deny God, but rather explains how our brain is equipped to process spirituality. There is controversy. Not everything in neurotheology is a bed of roses, since there are also many criticisms around. We have an example in the researcher Javier Bernácer, who warns about the danger of confusing correlation with causation. Thus, the fact that areas of the brain light up in a scanner while someone prays does not prove that prayer is the sole cause of that activation. He notes that much of today’s neuroimaging offers “anecdotes, not definitive evidence,” and calls for the discipline to adopt controlled trials to rule out cognitive biases. In Xataka | Three MIT physicists have reached a mathematical conclusion about God: if the universe is closed, there is no room for an external observer

Science has calculated the real impact of reading books on your brain. And it has a very simple recipe: 30 minutes a day

It is well known that a sedentary lifestyle It is one of the great enemies of public healthespecially at advanced ages where muscle loss is a great danger. However, there are sedentary activities that are really beneficial and that we sometimes stop, such as reading books. Its benefit is such that science has shown that immersing yourself in the pages of a good book It not only feeds the intellect, but also lengthens life. The demonstration. One of the most important studies who wanted to focus on the benefits of reading, beyond the cognitive benefits or the richness of vocabulary for everyday life, analyzed a group of 3,635 nationally representative participants in the United States over 12 years. And as a result, they saw that the longer the time spent reading books, lower risk of mortality. The results. To understand the magnitude of the discovery, the researchers followed all the patients until 20% of them died and only 80% remained. There they put the cut and began to draw conclusions. The first is that non-readers reached this point at 85 months, while book readers reached this same threshold at 108 months. This is something that translates into a 23-month survival advantage for those who had the habit of reading books, or in other words, readers reduced the risk of mortality by 20% throughout the 12 years of follow-up. Furthermore, this protection was maintained regardless of a person’s gender, wealth, education, or health status. The format matters. Although you may think that any type of reading is appropriate, even the back of a shampoo, the reality is quite different. In this case, the study explicitly compared the impact of reading books versus reading the newspaper or a magazine. The findings here demonstrated that reading books contributes to a significantly greater survival advantage than that seen with newspapers or magazines. While magazines offer short articles that we often skim, books require a higher level of concentration. Something that is enhanced above all because the authors constantly present themes, characters and topics and that is essential to be able to follow the thread of the story that is being presented to us. Because? Here science is quite clear that the key is in the brain, since the “cognitive score” functioned as a complete mediator of this survival advantage. This means that reading books improves cognition and it is this cognitive improvement that prolongs life. Here reading books activates different specific neural processes that create this advantage. Among the most notable points, we find that active reading of books improves skills such as reasoning, concentration, critical thinking and vocabulary. But it also promotes social perception, empathy and emotional intelligence, which can lead to better health behaviors and stress reduction. Fundamental things when we talk about extending life. It’s backed up. In addition to the original study published in 2016, science has wanted to continue investigating the benefits of reading with a study published in 2024 where the complexity of reading in older adults pointed to less cognitive decline. But it has also been decided to analyze even the cultural level of the citizens, where it has been seen that low literacy increases mortalityonce again making the act of reading books stimulate our brain and protect our cognitive reserve. Although it is not necessary to be reading all day to guarantee having a better brain, studies specifically point out that with about 30 minutes a day It is enough to start reaping these advantages and obtain more years of life in which to continue reading. Images | Blaz Photo In Xataka | The problem is not that we are reading fewer books: it is that the books we read are much simpler and easier

When a mountaineer experiences extreme experiences on the mountain, his brain begins to imagine something: a “third man”

Not all adventures have to be successfully resolved to become epic. It happened with what is known as Imperial Transantarcticthe expedition that left England in August 1914 under the orders of explorer Ernest Shackleton with an enormous purpose and not for the faint of heart: cross Antarcticafrom Vahsel in the Weddell Sea to Ross Island at the other end. Due to the harsh conditions at the South Pole, the ship Endurance ended up trapped between ice and Shackleton saw how his plans became complicated until they dragged him into a real feat that took his endurance and that of his colleagues to a limit level only achievable between icebergs, glacial temperatures and extreme exhaustion. The explorer’s feat also served something that he probably did not even suspect: coining the expression “third man factor or syndrome”. Well known by mountaineers and which is, even today, a fascinating phenomenon. “Who is the third person walking beside you?” Ernest Shackleton (left) with Robert Falcon Scott and Edward Wilson in Antarctica, 1902. The phenomenon was described by Shackleton when he recalled the very hard two and a half days during which he advanced—along with Frank Worseley and Tom Cream—towards a whaling station located on the northern coast of South Georgia. The group walked 36 long hours between terrible conditions, with hardly any material and avoiding death. On their shoulders they also carried the responsibility of having to help the rest of their companions from the ill-fated Imperial Transantarctic. Only the three of them, Ernest, Frank and Tom, wandered through the desolate Antarctica, although if someone had asked them how many people made up that desperate entourage, they would probably have answered something different: that with them was another person, a fourth member, nameless, faceless… but undeniable. “I know that during that long and stormy march over nameless mountains and glaciers, it often seemed to me that there were four of us, not three,” the explorer wrote. That common feeling, precise Guardianoverwhelmed the three men who undertook the journey: the presence of a “fourth” that accompanied them. Such an expression must have surprised the poet. T. S. Eliotwho some time later, in 1922, after reading Shackleton’s story, picked up the idea to capture it in his popular poem The Waste Land: “Who is the third one who always walks by your side? When I count, there is only you and me together, but when I look ahead on the white road there is always another walking at your side.” Eliot’s license, which changed Shackleton’s “fourth” man for a “third” was successful and since then we usually talk about the “third man syndrome” to refer to that: the feeling of a ghost companion, a presence that in a way comforts people who face a borderline sensation. Shackleton was not the only one to describe it. Several years after his death, in 1933, Frank SmytheBritish and explorer like him, recounted an experience similar while trying to summit Mount Everest. “The whole time I was climbing alone I had the strong feeling that I was accompanied by a second person. It was so strong that completely eliminated all the loneliness I might otherwise have felt,” the explorer wrote in his diary. So vivid was the sensation that, Smythe explains, at one point during the ascent he searched in his pocket, took out a piece of Kendal Mint Cakebroke it and turned to offer one of the halves to that companion who felt so close. He didn’t see anyone, of course. You don’t have to go back that far in time. Not that far. The Madrid mountaineer Fernando Garrido wrote in his notebook the feeling that came over him when, at the beginning of 1986, he spent more than two months on the lonely summit of the Aconcaguaat almost 7,000 meters, to achieve the altitude survival record. “Today, like other times, I woke up with the feeling that there was someone outsidenext to the store. Have you spent the night there? Why didn’t he call me to let him in? (…) —said the mountaineer in statements collected for him The Confidential—He’s my brother, my brother Javier! Javi, wake up, come on, wake up! I turn it towards me. “He is dead, his head is a skull.” “A solid science” A good handful of articles and references have been written about the phenomenon, some in media within the reach of Guardian either NPRand in 2008 the writer John Geiger dedicated a monographic book to him, ‘The Third Man Factor: Surviving the Impossible’ after spending five years tracking down similar stories. It is more complicated than collecting experiences, however, to give them a plausible explanation. Years ago, during a chat with the journalist NPR’s Guy Raz, Geiger reported that there are those who turn to spirituality, although he insists that the syndrome can be explained by “a solid science”. “Many skeptics and non-believers have had this experience and attribute it to other causes,” claims the author, who in his volume even includes the case of a 9/11 survivor. In 2009 Geiger pointed out explanations such as biochemical reactions or simply failures in brain activity. “If we understand that the third man factor is part of us, like adrenaline is… then we can access it more easily. It is not a hallucination in the sense that hallucinations are disordered. This is a very useful and orderly guide,” he reflected. Years ago, researchers Ben Alderson-Day and David Smailes commented on the phenomenon and they explained that “strong feelings of presence” do not occur only in dramatic circumstances. Cases have been recorded after bereavement, during sleep paralysis or in cases of neurological disorders, such as Parkinson’s disease or brain damage. “The different contexts in which they occur give us some clues about what could be happening,” they say. “Understanding more about how and why felt presences occur has the potential to tell us many things about ourselves: how we react under intense mental or physical stress, how we deal with danger and threat, … Read more

The cell phone on the nightstand is not “frying” your brain, but science is beginning to understand why it prevents you from resting

It is practically a ritual today: connect your phone to the charger, set the alarm and leave it on the nightstand just 30 centimeters from the pillow to sleep. According to the data, for 95% of adultssleeping with your phone within reach is a logistical necessity; For a growing stream of longevity experts, It’s a biological miscalculation. because we rest less. To do this, we have analyzed the bibliography to know exactly the effect of having your cell phone next to you. The culprit confirmed. Before entering the swampy terrain of the possible problems that radiation can generate when it is around us, we must point out the “elephant in the room.” The most solid evidence we have today does not blame antennas for having a bad sleep, but to the screens and what we do with them. To give us an idea, a meta-analysis over 36,000 participants concluded that excessive use of smartphone increases the risk of having poor quality sleep by 228%. The double responsible. The first is the suppression of melatonin, since the blue light emitted by the LED panels of mobile phones tricks our brain making him believe that it is still day. This delays the release of melatonin and fragments the architecture of sleep. But not only the blue light is information, since responding to a WhatsApp or doing doomscrolling on TikTok before bed keeps the brain alert. A study of medical students suggested that nighttime cell phone use corresponded to poorer sleep. The radiation debate. It has always been a mantra for many: having your cell phone nearby is having a large source of radiation that causes many health problems. In this case, organizations such as the WHO or ARPANSA have traditionally maintained that evidence of damage from low-level electromagnetic fields is “insufficient.” However, it does not mean that it is non-existent. The most recent studies They are beginning to see the non-thermal effects that mobile phones have. One of the most interesting was done with baby monitors that have a frequency of 2.45 GHz, similar to Bluetooth or Wifi, to simulate environmental exposure. The result was that the exposed group, compared to the placebo, showed a worse subjective quality of sleep and alterations in heart rate variability, suggesting that sensitive people do notice the invisible “presence” of the electronic device nearby. Brain wave modulation. Other research on 5G signals found that exposure to 3.6 GHz waves affected sleep spindles during N2 phasethat is, light sleep that accounts for 50% of the total rest time. The curious thing about this study is that the effect depended on genetics: only carriers of certain variants of the CACNA1C gene showed alterations in the electroencephalogram. This qualifies the warnings of some experts, since radiation may not affect us all equally, but for a genetically predisposed subgroup, sleeping next to a continuous emission source could be fragmenting their N2 phase, crucial for memory consolidation. The habit factor. It is often cited Sinha’s studio to demonize radiation, but what this study really measured were habits in a sample of 566 participants. In this case, it was seen that those people with high mobile phone use took longer to fall asleep, their sleep was less efficient, and 22.6% reported worse quality of sleep. In this way, the conclusion was not that the waves prevented them from sleeping, but that the habit of having their cell phone nearby inevitably leads to using. If it’s on the table, you look at it. If you look at it, you become active. It is a behavioral rather than a radiological vicious circle. Hygiene protocol. The question in this case is inevitable: should we wrap the room in aluminum foil? It’s not necessary. In this case, physics works in our favor thanks to the inverse square law: the intensity of the radiation falls drastically with distance. That is why the most important thing is to move the device at least one meter away from the bed, since at this distance the exposure falls to negligible basal levels, making Sleeping with your cell phone under your pillow is the worst possible decision. If we want to go a little further, we can put it in airplane mode, although the best advice, as the Spanish Society of Neurology points out, is to have a sacred hour, where the recommendation is to leave the screens an hour before going to sleep. Images | Nubelson Fernandes In Xataka | We thought insomnia was just not being able to sleep. Now we know that there are five different disorders

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