“Animals of Science” is like a collection of stories. Beautiful stories that tell the living in all its freshness. But also in all its complexity. A parenthesis to marvel at the treasures of the world. For this new episode, let’s once again go back to him who has become our best friend: the dog.
When it sniffs for feces, it’s a little annoying. We must admit it. But when it sniffs, bombs, victims of disasters or even diseases, it is immediately much more interesting. And it has been known for a long time, the dog has one unique.
Looking closer, it’s not very surprising. Thathiding in has an area 50 times larger than that found in ours . It consists of 200 million. to 1 billion smell. By comparison, ours, always by the nose, counts no more than 5 million!
Page, same conclusion. The dog’s olfactory bulb – understanding the region of the brain that processes messages sent by scent sensors – is up to 30 times larger than that of humans. With about 40 times more cells dedicated to odor analysis.
And all that is without mentioning the surprising body, whichcold vomeronasalt organ. It is placed in the upper palate of the dog. Connected to the nose with two small channels. Thanks to this, the dog can analyze smells with incredible finesse. Even when fragrant is not legion.
Smell and sight connected to each other
The dog’s extraordinary power could already seem to have no more secrets for scientists. But that would be to forget their boundless curiosity. For after all, they remained amazed at a dog, ifappears a million times more effective than ours. So they used an advanced neuroimaging technique to try to locate the paths that they in the dog’s brain. The white matter is what transports information between brain areas. Millions of cables surrounded by one fat, the .
Researchers know #CornellVet has provided the first evidence that dogs’ sense of smell is integrated with their vision + other unique parts of the brain, revealing how dogs experience + navigate the world. Dr. Pip Johnson is the study’s senior author.https: //t.co/FWoyKr6mlq
– Cornell College of Veterinary Medicine (@cornellvet) July 18, 2022
Twenty dogs participated in the experiment. Dogs are all pretty good sniffers, let’s face it. And what the researchers have observed are first and foremost connections between the olfactory bulb – which is located behindof the dog – and and the piriform lap. This is where the brain processes memory and . Connections similar to those found at home. These same compounds that immerse us in our childhood with the simple scent of hot chocolate. No wonder, so far. But the researchers also discovered compounds they had not expected at all. Because such compounds have never been observed in any other animal species. Not even in humans. connections with and with the occipital lobe.
The occipital lobe is the area of the brain that processes … visual information! Yes, you read that right. In dogs, smell and vision are connected by the brain. Some scientists assumed it. But this time it is proven. This also explains how dogs that have become blind manage to orient themselves so well in their environment. Much better than us. Good news for people who share life as a dog. And another sign that oursis not so stupid!