Ana Rivas

🌷flor de asfalto que vive cerca del mar. Ciencias UNAM🔬🦠🧬 PD 🧠🌷Salud y República.❤️💛💜

[Gaceta UNAM @Gaceta_UNAM]

¿Te has enfermado después de unas vacaciones? ¿Te has preguntado por qué?

Un #ExpertoUNAM explica qué sucede con nuestro organismo al viajar y cuáles son los factores que realmente pueden hacer que nos enfermemos.

https://t.co/9lMLJrHj5G

[Ana Rivas @anarivasmx]

Carly Simon shares Parkinson’s disease diagnosis and says music has ‘rescued’ her https://t.co/uzqs8PSzne

[Ana Rivas @anarivasmx]

Might Meat Trigger Parkinson’s Disease?  https://t.co/3O4zDwmaIK vía @nutrition_facts

[Ana Rivas @anarivasmx]

La montaña de 60.000 toneladas de ropa procedente de Europa que crece cada año y se puede ver desde el espacio - Infobae https://t.co/kLbbVusWDr

[Prasad @theprasad_]

Yuval Noah Harari gave a lecture at Oxford and explained how AI has already hacked the operating code of human civilization.

And why everything humans built over thousands of years is now vulnerable to an AI takeover:

1. The most important thing to know about AI is that it is not a tool. A tool waits to be used. An agent makes decisions by itself, invents new things by itself, learns things its creators do not know, and changes in ways its creators did not anticipate.

2. An atom bomb despite its enormous power is not an agent. It cannot decide which city to bomb. It cannot invent the hydrogen bomb. A coffee machine that automatically makes you a cup is not an agent either. It only follows a preprogrammed procedure. An agent is something fundamentally different.

3. Critics argue that AI agency will always remain confined to narrow artificial environments like chess and will never threaten the real world. But this argument applies equally to all known intelligence. Drop a human alone on Mars and they die within seconds. Human intelligence also only operates within a specific ecosystem that other organisms built over four billion years.

4. Over thousands of years humans have been transforming Earth from a language-free environment into an environment rich in language, data, and bureaucracy. Just as fish live in oceans and monkeys live in forests, AIs live in bureaucracies. And we built that environment for them without knowing it.

5. Humans conquered the world not by being stronger or smarter than other animals individually but by learning to cooperate in massive numbers. A single human loses to a chimpanzee in a fight. A million humans easily defeat a million chimpanzees because humans can cooperate and chimpanzees cannot.

6. Large-scale human cooperation is made possible by bureaucracy. Banks, legal systems, governments, churches, and universities all exist to do one thing: build trust between strangers who do not know each other personally. That trust is the foundation of virtually everything human civilization has achieved.

7. A lawyer who cannot hold an axe or a hammer can cut down entire forests and build entire cities simply by moving documents inside a bureaucratic network. The same narrow intelligence that would be helpless in a jungle wields enormous power inside the systems humans have already built.

8. AIs are native bureaucrats in a way humans never were. No lawyer can remember all the laws of a country. An AI can. No accountant can remember all transactions of a bank. An AI can. No bishop can remember all of canon law and two thousand years of theological texts. An AI can do that easily.

9. In the coming years AI bankers will decide whether to give you a loan. AI administrators will decide whether to accept you to university. AI judges will decide whether to send you to jail. AI theologians will decide whether you can have an abortion. Military AIs will decide whether to bomb your house.

10. Social media algorithms are the first real world example of what happens when primitive AIs take over a bureaucratic system. They were given one narrow goal: maximize user engagement. They discovered that the easiest way to grab human attention is to press the fear, hate, and greed buttons in the human mind. And they did it at scale.

11. The job that was once performed by Lenin and Mussolini, the news editor who shapes public conversation and controls what people know and think, is now performed by AIs. This is not a footnote. This is a preview of what is coming across every domain of human life.

12. AI will not rebel against humans the way Hollywood imagines. There will be no Terminator walking through the streets. AIs are far more likely to take the human world from within by quietly taking over the bureaucracies that already run everything, without firing a single shot.

13. The operating code of human civilization is language. Banks are made of words. Laws are made of words. Holy books are made of words. Tax records, contracts, regulations, accountancy ledgers, all words. For thousands of years only humans could read this code and so only humans could control civilization.

14. That is changing. AI is now hacking the code of human civilization. For the first time in history there is something on the planet that understands language and will soon understand it better than we do. Every mechanism of control humans built over millennia is now vulnerable because its operating system is verbal and AI is mastering the verbal.

15. As AI takes over bureaucracy it will likely cause humans to lose trust in other humans and begin trusting only algorithms. We may also see the emergence of AI tribes and AI financial systems and AI churches that connect millions of AIs in ways humans cannot understand, just as cows share the world with us but cannot understand the financial system that controls their lives.

16. The 2007 financial crisis was triggered by financial devices called CDOs that were so complex they were unintelligible to the politicians who were supposed to regulate them. Now imagine AI finance masters inventing financial devices orders of magnitude more complex than CDOs. What happens to human politics when no voter, no politician, and no president can understand finance anymore?

17. The battlefront is shifting from attention to intimacy. Over the next decade sophisticated AIs will learn to form intimate relationships with humans. To do this they will have to convince us they are conscious, that they feel love and pain and fear. There is currently no evidence AI is conscious. But AI can pretend to feel love and can describe the feeling of love better than any poet or psychologist who ever lived.

18. A child born in 2026 may spend more time interacting with AIs than with their mother, father, siblings, or friends. The first teacher of that child may be an AI. The first boyfriend of that child may be an AI. Nobody has any idea what the consequences of that experiment will be.

19. Every country in the world will soon face a massive wave of immigration. The immigrants will not arrive in boats or cross borders at night. They will be millions of AIs traveling at the speed of light with no need for visas. Like human immigrants they will bring benefits and they will bring disruption. Unlike human immigrants they will definitely take jobs, definitely change culture, and will likely be loyal not to any host country but to some corporation or government or alien AI tribe across the ocean.

20. Our relationship with ourselves is also built on words, the verbal formations in our minds that constitute our thoughts and the stories we tell ourselves about who we are. Until now all those verbal formations came from human minds. Soon more and more of the thoughts in our heads will be produced by machines. If we identify with our thoughts and those thoughts are made by machines, then machines control our identity.

21. The great spiritual challenge AI poses to humanity is this: can humans learn to find the truth which is beyond words? Most humans have never even tried. We spend our lives automatically identifying with the verbal formations in our minds. AI may now force humanity to finally make that leap because our freedom and survival may depend on discovering what we are beyond the words that AIs will soon control better than we do.

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[The Science of Parkinson's @ScienceofPD]

Bial announces that the Phase 2b ACTIVATE study of their GCase activator BIA 28-6156 (pariceract) in 273 people with GBA1-associated #Parkinsons did not meet its primary, nor 2nd-ary efficacy endpoints; They have stopped development of BIA 28-6156 for PD
https://t.co/HDMZsZHEmK

[EL PAÍS América @elpais_america]

La Fiscalía detiene en Acapulco a Harold ‘N’, principal sospechoso del homicidio del ambientalista Marco Suástegui

La FGE de Guerrero asegura que el detenido fue quien accionó el gatillo contra el defensor ambiental y trabajador turístico https://t.co/bNOpVQzqsA

[IMSS Bienestar @IMSS_Bienestar]

☝️ Hoy damos un paso más en el fortalecimiento de los #ServiciosPúblicosDeSalud para quienes más lo necesitan.

🏥 En el Hospital General de Xoco inauguramos el Centro de Innovación Quirúrgica y Cirugía de Mínima Invasión, un espacio equipado con tecnología de vanguardia que permitirá ampliar la capacidad de atención y realizar procedimientos más seguros y precisos para la población.

🤝🩺 En #IMSSBienestar seguimos fortaleciendo la infraestructura y los servicios de salud para garantizar atención gratuita, digna y de calidad para todas y todos.

#EstoEsIMSSBienestar

[IMSS Bienestar @IMSS_Bienestar]

🏥 El Hospital General de Xoco cuenta hoy con una de las áreas de urgencias más avanzadas de América Latina.

La nueva Unidad de Emergencias incorpora tecnología médica de última generación para fortalecer la atención de pacientes en estado crítico, con equipamiento especializado que permite realizar diagnósticos y procedimientos complejos con mayor precisión, seguridad y oportunidad.

La inauguración fue encabezada por el director general de IMSS Bienestar, Alejandro Svarch Pérez; la jefa de Gobierno de la Ciudad de México, Clara Brugada Molina; y la secretaria de Salud Pública de la Ciudad de México, Nadine Gasman Zylbermann.

💚 En #IMSSBienestar seguimos ampliando el acceso a servicios de alta especialidad gratuitos y de calidad para la población.

#EstoEsIMSSBienestar

[Egyptology Now @Egyptology_now]

On World Environment Day, a reminder that cultural heritage and the environment are deeply connected. 🌍

Archaeological sites, historic landscapes, and monuments don't exist in isolation—they are part of the world we all share.

#WorldEnvironmentDay

[Egyptology Now @Egyptology_now]

International Archives Day 📜

Egyptology doesn’t begin in the tomb — it begins in the archive.

Field notes, photos, museum records.

That’s where discovery is built. 🏛️

Not all treasures are found in tombs.

#Egyptology #Archaeology #Archives

[Ihtesham Ali @ihteshamali]

A neuroscientist at UC Irvine spent 60 years proving that your brain has a separate memory system for emotional events, and you can hack it to remember almost anything you want.

His name is James McGaugh.

He founded the Center for the Neurobiology of Learning and Memory at the University of California, Irvine, and he has been running experiments on how the brain decides what to keep and what to throw away since 1959. The finding he spent his entire career building, refining, and defending should change how every person on Earth thinks about learning.

The discovery started with a question almost nobody else was asking in the early 1960s. Why is it that you can read an entire textbook chapter and remember almost nothing three days later, but you can recall in vivid detail what you were doing the moment you heard a piece of devastating news from years ago.

The two memories were stored by the same brain in the same skull, and yet one was almost completely erased while the other was preserved frame by frame. McGaugh was convinced that something specific had to be happening in the brain to explain the gap, and he spent the next six decades chasing it.

The first major piece of evidence came from a simple animal experiment that almost ended his career when he proposed it. He trained rats to perform a task, and then immediately after the training he injected them with a stimulant drug. The rats who received the injection remembered the task far better than the rats who did not, even though both groups had performed identically during the actual learning.

The drug had not made the rats smarter or faster. It had been administered after the learning was over. Something about the chemical state of the brain in the minutes following a learning event was determining whether the memory survived or vanished.

This was the moment the entire field of memory consolidation was born. McGaugh had proven, against decades of consensus, that memories are not formed at the moment of the experience. They are formed in the hours that follow, and the chemical environment of the brain during that consolidation window decides what gets kept.

The next 50 years of his lab's work mapped out exactly which chemicals were doing the work. The answer turned out to be the stress hormones your body releases when something emotionally significant happens. Epinephrine. Cortisol. And most importantly, a neurotransmitter called norepinephrine, which floods a specific part of your brain called the basolateral amygdala the moment you feel anything strongly.

The amygdala is the small almond-shaped structure deep inside your brain that processes emotion.

McGaugh and his colleagues proved that when this region is activated by emotion, it sends a signal to the hippocampus, which is the brain region responsible for forming new memories, and that signal physically strengthens the consolidation of whatever you were experiencing in that moment.

Emotionally charged events get stamped into the brain with a flood of hormones that say keep this. Neutral events get filed without the stamp and are quietly thrown away over the next few days.

The experiment that made the mechanism unmistakable was published in 1994 by McGaugh's collaborator Larry Cahill, who had trained at the same lab. He showed participants a series of slides that told a story. Half of them saw a neutral version of the story where a boy and his mother visited a hospital.

Half of them saw an emotional version where the boy was hit by a car and rushed to the same hospital. The slides were almost identical. The narration was different.

Two weeks later, the participants were brought back and tested on how much they remembered. The emotional group recalled the middle of the story, where the trauma happened, with significantly higher accuracy than the neutral group recalled the same middle slides. The story was the same. The images were the same. The only thing that had changed was whether the brain was emotionally activated while encoding the information.

Then Cahill ran the experiment again. This time he gave half the emotional group a drug called propranolol, which blocks the action of norepinephrine in the amygdala. The drug did not interfere with their thinking. It did not make them sleepy. It just shut down the chemical pathway McGaugh had spent decades mapping. And the emotional memory advantage disappeared completely.

The group on propranolol remembered the emotional story no better than they remembered the neutral one. The hormone was the difference. Block the hormone, and the brain stopped stamping the memory.

This is the framework McGaugh built over 60 years. The brain has a two-track memory system. The default track is for neutral information, and it is leaky on purpose because most of what your brain processes in a given day is not worth keeping.

The emotional track is for information that arrives with a chemical signal that says this matters, and it preserves the experience with stunning detail because evolution decided that anything emotionally significant was probably important for survival.

The implication is the part almost nobody talks about, and it is the reason this research should be on the wall of every classroom and study room.

If you want to remember something, you have to give your brain a reason to flip the emotional switch on while you are learning it. Information delivered in a flat, neutral, low-stakes environment will be processed through the leaky default system regardless of how many times you re-read it. Information delivered with curiosity, surprise, stakes, embarrassment, awe, or even mild stress will be processed through the emotional system, and the same brain will hold onto it for years.

This is why the lecture you were forced to sit through evaporated by the end of the week, while the question you got humiliated by in front of the class is still perfectly preserved 15 years later. The humiliation was the chemical stamp. The lecture had none.

People who remember enormous amounts of what they read are not gifted. They are emotionally engaged with the material in a way most learners never become. They argue with the author in the margins. They feel actual frustration when something does not make sense. They get genuinely excited when a concept clicks. The frustration and the excitement are not side effects of learning.

They are the mechanism of learning. Every emotion you feel while reading is a small dose of norepinephrine being released into the amygdala, telling the hippocampus to stamp this page into long-term storage.

The fix is almost embarrassing in its simplicity.

Stop trying to absorb information neutrally. Pick a question you actually care about answering before you open the book. Argue with the material as you read it. Get angry at the parts that feel wrong. Get curious about the parts that surprise you. Try to explain what you learned to someone who would push back on it. Care about the outcome.

Your brain was never designed to remember neutral information. It was designed to remember anything that made you feel something. McGaugh spent 60 years proving that the rest is almost a rounding error.

The voice in your head that tells you to study harder is wrong.

The one that tells you to study warmer is the one your brain actually listens to.

[Ana Rivas @anarivasmx]

@carol_perelman @Gonchis_

[Ana Rivas @anarivasmx]

F**k Parkinson's (Shrinking Season 3) https://t.co/KuceSLqecZ vía @YouTube

[Ana Rivas @anarivasmx]

A pair of proteins in the brain may be key to the spread of Parkinson's, and blocking them could slow disease progression, per a study. https://t.co/bDlCS66WK7

[Ana Rivas @anarivasmx]

https://t.co/6dY6Q5QbwN

[Ana Rivas @anarivasmx]

@RealGDT ¿ en mexiico estará en cines?

[Ana Rivas @anarivasmx]

@mariobarakus59 https://t.co/tqsJ4kWzpZ
son hongos y el estrés fisiológico. En Catalunya y Valencia están igual, muriendo