12 Facts About Ivan Pavlov

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Thanks to Ivan Pavlov, we’re all familiar with classical conditioning and the Pavlovian response (ring a bell before giving a dog a plate of food enough times and he’ll eventually begin to salivate at the sound of the bell rather than the sight of the meal itself). But if you want to know more about the man himself, from his side gig selling canine gastric juice to his couchsurfing days, it’s time to examine these 12 facts about Ivan Pavlov (who was born 167 years ago).

1. A LOT OF WHAT WE THINK WE KNOW ABOUT HIM IS WRONG.

Pavlov’s biographers point out that most people have misconceptions about the Russian physiologist. For example, instead of ringing a bell to train dogs, Pavlov actually used a variety of tools such as a metronome, buzzer, whistle, light, harmonium, and even electric shock. And Pavlov’s concept of the conditioned response is, in reality, not exactly what he pioneered. He discussed the conditional response, but a mistranslation of the original Russian word uslovnyi gave us the phrase conditioned response, which is still used today.

2. HE PLANNED TO BECOME A PRIEST.

Pavlov was born in Ryazan, Russia in 1849. His father was a priest, and Pavlov enrolled in a theological seminary. But after reading the works of Russian physiologist Ivan Sechenov, Pavlov decided to change course. In 1870, he left the seminary and enrolled at what is now known as St. Petersburg University to study natural science, physics, and math.

3. HIS CHEMISTRY PROFESSOR WAS A BIG DEAL.

During Pavlov’s first year of university, one of the classes he took was inorganic chemistry. His professor, Dmitri Mendeleev, was a big deal in the world of science. In 1869, Mendeleev published the first periodic table of elements and is credited as the father of the periodic table. Not too shabby.

4. HIS EARLY WORK DEALT WITH PANCREATIC NERVES AND ANIMAL DIGESTION.

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Throughout the 1870s and early 1880s, Pavlov studied the natural sciences and physiology, conducting research and working on his doctorate thesis. Specifically, he wrote about the function of the nerves in the pancreas and the heart. In 1890, Pavlov was asked to develop and direct a physiology department at the Institute of Experimental Medicine, where he studied the interplay between the nervous system and digestion.

5. HE WAS SO POOR THAT HE COUCHSURFED FOR A FEW MONTHS.

Russian scientists worked in modest labs and were paid very little, so Pavlov struggled with finances. In 1887 he couldn’t afford his apartment anymore, so he spent a few months away from his wife (Serafima, or Seraphima, Karchevskaya) and young son. Pavlov crashed with friends or slept in his lab, and he took on extra jobs; he taught physiology and worked on a medical journal to earn more money.

6. HE FINANCED HIS LAB BY SELLING CANINE GASTRIC JUICE AS A CURE FOR INDIGESTION.

Pavlov kept his physiology lab running by selling something that he had easy access to: canine gastric juice. While conducting experiments on dogs’ digestive systems, Pavlov collected gastric juice from hungry dogs that stared at a big bowl of meat all day. Pavlov paid an assistant to run the gastric juice collection operation, and he sold thousands of containers of the juice each year to people around Europe, who drank it daily to treat dyspepsia (indigestion). Yum!

7. AFTER HIS FIRST SON DIED, HE NAMED ALL HIS FUTURE CHILDREN WITH “V” NAMES.

If you think Pavlov and the Kardashians have nothing in common, think again. After the sudden death of their first child, Wirchik, at a very young age, the Pavlovs had four more children: three sons and a daughter, whom they named Vladimir, Victor, Vsevolod, and Vera.

8. HE WON A NOBEL PRIZE FOR REMOVING DOGS’ ESOPHAGI.

Although Pavlov’s most well-known work—showing how an environmental stimulus can influence a behavioral response—was groundbreaking, he won a Nobel Prize in 1904 for something different. He earned his Nobel Prize for his research into the animal digestive system. After surgically removing a dog’s esophagus, Pavlov fed the animal and observed how the process of digestion worked, measuring the digestive secretions of the stomach and pancreas.

9. H.G. WELLS WROTE ABOUT PAVLOV FOR THE NEW YORK TIMES MAGAZINE.

In November 1927, science fiction writer H.G. Wells wrote an essay about Pavlov for The New York Times Magazine. Because Wells didn’t fully understand the science behind one of Pavlov’s articles about reflexes, he ignored the heavy-duty science and focused on Pavlov the man. Wells wrote about Pavlov’s “vastly heroic” nature and devotion to advancing science in the face of poverty, war, and revolution. After a 23-year-old B.F. Skinner read Wells’s article on Pavlov, he became a fan and grew up to be one of the most influential behavioral psychologists.

10. HE HAD A BAD TEMPER.

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According to his biographer, Daniel Todes, Pavlov had issues with anger management. Beginning in childhood, his mood could change suddenly, and as an adult, he hit aggressive dogs in his lab and was known for his uncontrollable outbursts of anger. Pavlov himself described his angry outbursts as “morbid, spontaneous paroxysms.”

11. HE SPOKE OUT AGAINST SOVIET COMMUNISM.

In 1921, Vladimir Lenin publicly praised Pavlov for his scientific contributions, and the Soviet government funded his research and offered him increased food rations (he didn’t accept). But Pavlov spoke out against communism, requesting in 1922 that he be allowed to move his lab to another country. Lenin refused. Pavlov said: “For the kind of social experiment that you are making, I would not sacrifice a frog’s hind legs!” Pavlov also decried his government’s persecution of political dissidents and clergymen; in a letter, Pavlov told Joseph Stalin that he was “ashamed to be called a Russian!” Surprisingly, Pavlov wasn’t killed for his contrarian views because the government determined that his scientific work was too valuable for Russia.

12. HIS HOME AND APARTMENT WERE CONVERTED TO MEMORIAL MUSEUMS.

Pavlov’s estate in Ryazan, Russia is now a museum where visitors can explore his life and achievements. If you visit, be prepared to see stuffed dogs (and even a monkey) that Pavlov used in his experiments. And if you find yourself in St. Petersburg, you can check out The Pavlov Memorial Museum, where Pavlov lived for almost two decades before he died on February 27, 1936.


September 26, 2016 – 8:00am

Breathtaking Timelapse Shows How Crystallization Occurs

filed under: science, video

Filmmaker and scientist Yan Liang wants to show students that learning science is about more than lab reports, tedious measurements, and complex calculations. He recently founded the education company Beauty of Science which will produce books, apps, and videos that focus on the beauty and wonder of science.

His first project is a timelapse video called “Crystallization2” that reveals how different salt molecules crystallize when water evaporates. Though it doesn’t really explain the scientific processes at work, the video showcases the breathtaking beauty of the microscopic world and is designed to inspire viewers to learn more about the crystallization process on their own.

“The subjects of this project were droplets of saturated aqueous solutions containing various inorganic salts (e.g.table salt, sodium sulfate etc.). The evaporation of water initiated the crystallization processes inside the droplets, which were captured by time-lapse photography,” Liang explains. “A single droplet contains the wonders of nature.”

[h/t Gizmodo]

Banner image credit: Yan Liang, Vimeo


September 26, 2016 – 7:30am

Scientists Record Fish Singing a Dawn Chorus Like Birds

A line of batfish possibly ready to bust into song. Image credit: iStock

 
Most fish aren’t prized for their musical talents, but vocalization is an important tool used by many species. Chirps, hums, and croaks can help fish attract mates or keep track of one another when hunting in the dark. According to a recent study published in Bioacoustics, some fish may share even more in common with songbirds than we previously thought. Researchers at Curtin University in Perth, Australia, have recorded seven unique fish choruses ringing out off the west Australian coast at dusk and dawn, New Scientist reports.

The overlapping calls were recorded over an 18-month period in the waters off Port Hedland. You can listen to an example of three of the fish choirs below. The bullfrog-like call comes from the Black Jewfish, the buzzing from a member of the Terapontid family, and the softer “ba-ba-ba” noise from the batfish.

As is the case with many bird species, the fish choruses followed distinct diurnal patterns, swelling at sunrise and sunset. The fish recorded by the team represent a small fraction of the 800 fish species known to produce sound. Such adaptations can proves useful for researchers: Scientists sometimes use fish calls to monitor underwater ecosystems when water visibility is low.

[h/t New Scientist]

Know of something you think we should cover? Email us at tips@mentalfloss.com.


September 26, 2016 – 7:00am

5 Questions: “Fall”ing into Autumn

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Monday, September 26, 2016 – 02:45

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Joe Biden Will Appear on ‘Law & Order: SVU’ This Week

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Law & Order: SVU is known for its shocking twists, but the show’s latest surprise is of a different variety: On Wednesday, September 28, Vice President Joe Biden will be making a cameo appearance. 

The episode, titled “Making a Rapist,” is a spin on the popular Netflix docuseries Making a Murderer. Without giving too much away, the episode centers around a man who has his rape conviction overturned, only to be accused of raping another woman. According to The Daily Beast, the episode opens with Biden praising Lt. Olivia Benson (Mariska Hargitay) and her team for weeding through a backlog of untested rape kits.

While the story is a work of dramatic fiction, the subject matter itself is staked squarely in reality. Biden has made campus rape and sexual assault a point of focus during his vice presidency and has been working to help victims of sexual abuse since he brought the Violence Against Women Act (VAWA) to Congress in 1990.

This isn’t the Vice President’s first television cameo. In the fifth season of Parks and Recreation, he made a brief appearance to meet Leslie Knope (Amy Poehler’s Biden-loving public servant). Now that the veep appears to be building an impressive resume on IMDb, and will soon be out of a job, we’re excited to see where the politician’s acting career might take him next. 

[h/t The Daily Beast]

Know of something you think we should cover? Email us at tips@mentalfloss.com.


September 26, 2016 – 6:30am

Morning Cup of Links: The Perfect Fantasy Movie

filed under: Links

Why The Princess Bride is a Perfect Fantasy Movie. Because it’s got something for everyone.
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Magical Life Advice from Muppets Creator Jim Henson. He was always looking at the bright side.
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18 True Crime Podcasts That’ll Seriously Creep You Out. In case you enjoy the depths of human depravity right in your headphones.
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It Was A Hot Summer. How Will That Affect The Changing Fall Foliage?
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10 Secrets of Filming Reality TV Shows. Starring in one can’t be worth the headaches and humiliation.
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The Absurdist Theme Park Where Confederates Win and Dinosaurs Roam. Dinosaur Kingdom II is Mark Cline’s bizarre collection of attractions you can visit.
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The rise of the ‘bedless hospital.’ It’s cheaper, and probably safer, to recuperate at home.
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10 Female Gangsters You Should Know About. They were bad, and they often got away with it.


September 26, 2016 – 5:00am