Tag Archives: Smithsonian

Dogs’ brains respond to human voices

Yet more research on how dogs’ brains work.  This time from a research team at Eötvös Loránd University in Hungary and published in the journal Current Biology.

Using functional MRI, the team could see where blood flowed in the brains of a group of 11 dogs.  The dogs had been specially trained using positive reinforcement techniques to lie still in the MRI scanner for six minutes.

A dog lies still in the fMRI scanner, wearing earphones to pipe in sounds as part of the study. (Photo by Eniko Kubinyi)

A dog lies still in the fMRI scanner, wearing earphones to pipe in sounds as part of the study. (Photo by Eniko Kubinyi)

which tracks blood flow to various areas of the brain, a sign of increased activity—to peer inside the minds of dogs. One of a handful of labs groups worldwide that’s using the technology in this way, they’ve used positive reinforcement training to get a study group of 11 dogs to voluntarily enter the fMRI scanner and stay perfectly still for minutes at a tRead more: http://www.smithsonianmag.com/science-nature/your-dog-can-tell-from-your-voice-if-youre-happy-or-sad-180949807/#DXcpTX0jfeQGFWVY.99
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The team played each dog a series of over 200 sounds across several MRI sessions.  The sounds included human voices, dog vocalizations, and meaningless noises.

When the results were compared, it showed that the dogs’ brains appear to have a dedicated area that displays more activity in response to voices (whether human speech or dogs barking) than other meaningless noises (such as glass breaking).

More importantly, that part of the brain shows more activity upon hearing an emotionally positive sound, as compared to a negative one.  This means that our dogs are able to distinguish a tone of voice that is positive from one that is negative. (Something many of us probably already knew)

The voice areas of the dogs’ brains is similar to that found in humans, suggesting that our species evolved from a common ancestor almost 100 million years ago, enabling a high degree of communication and social structure.

“We know that dogs don’t have language, per se, but we see now that dogs have very similar mechanisms to process social information as humans,” Attila Andics, lead researcher on the study says. “It makes us wonder what aspects of so-called ‘language skills’ are not so human-specific after all, but are also there in other species. That’s something we plan to look at.”

Source:  Smithsonian Magazine

Here are my earlier blogs about functional MRI studies on dogs:

they show that the dogs’ brains appear to have a dedicated area that displays more activity in response to voices (whether human speech or dogs barking) than other meaningless noises (such as glass breaking), and that part of this area shows more activity upon hearing an emotionally positive sound, as compared to a negative one.Read more: http://www.smithsonianmag.com/science-nature/your-dog-can-tell-from-your-voice-if-youre-happy-or-sad-180949807/#DXcpTX0jfeQGFWVY.99
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Sargeant Stubby – a WWI tribute

Tomorrow is Anzac Day, a public holiday throughout New Zealand and Australia.  Last year, I wrote about Caesar the Anzac Dog.  This year, it is Sergeant Stubby.  Although not from New Zealand or Australia, this dog embodies the spirit and companionship that were hallmarks of WWI.

Photo courtesy of Smithsonian’s National Museum of American History

Photo courtesy of Smithsonian’s National Museum of American History

Thousands of young Americans answered a call to arms in 1917.  In New Haven, Connecticut, a four-legged volunteer (a bull terrier mix) wandered into a local training camp for the 102nd Infantry, 26th Yankee Division and befriended a young private named J. Robert Conroy. Lacking official papers, Conroy smuggled his canine friend aboard the troop ship Minnesota.

Stubby, as he was named (for his short tail), became New England’s most decorated canine war hero.

By February 1918, Stubby was experiencing the battlegrounds of France.  He would leave the trenches and go into the dangerous “no man’s land” of exploding mines, barbed wire and bomb craters to find, comfort and lead rescuers to missing or wounded soldiers.   Once he experienced mustard gas, he was a keen gas detector and warned his fellow soldiers when gas attacks were imminent.

During the Battle of the Argonne, he helped to capture an enemy spy. Official accounts note that Stubby leaped from the safety of the trench, bit a previously undetected intruder on the seat of his pants and held him there until the alarmed German was disarmed.

Grateful residents sewed Stubby a chamois blanket that became his uniform. On it were embroidered the flags of The Allies, three chevrons indicating the rank of sergeant and a fourth “wounded chevron” which he received for injuries suffered in a grenade attack. Service medals for action at Verdun, St. Mihiel and Chateau Theirry and Meuse-Argonne were later pinned to his blanket. It now sits with his stuffed remains at the Smithsonian in Washington D.C.

Stubby, including his coat, are on display at the Smithsonian in Washington DC.

Stubby, including his coat, are on display at the Smithsonian in Washington DC.

Stubby survived the war and returned to the United States with Robert Conroy.  When Conroy enrolled at Georgetown University to study law, Stubby became a mascot to the local team, the Hoyas.  The pair also visited the White House and were featured in numerous parades.  When he died in 1926,  Stubby’s obituary was published in many newspapers.