As humans, we use ‘voice areas’ in our brains to recognize who is talking and determine the speaker’s emotion. The question: Do dogs process voices in the same way? Are dogs in tune to their owners’ emotions? The dog is often referred to as ‘man’s best friend.’ And new research is proving just how right that is!
It turns out that dogs also have dedicated ‘voice areas’ in their brains- and they’re in the same location as a human’s voice area. In a study looking at how dogs process different sounds, researchers in Hungary trained dogs (golden retrievers and border collies) to lie still in an MRI machine during brain scans while listening to dog and human sounds.
The study found that both humans and dogs were able to read the emotions of the other species correctly, and both responded to the emotions of the other species in similar ways.
What does this mean? Maybe the dog is man’s best friend because he really GETS us. If you own a dog, you’ve probably experienced this before. And now, when you think your dog is recognizing that you’re happy or sad, you can rest assured that you’re probably right!
Researchers at Columbia University Medical Center have unlocked several important pieces of information about Alzheimer’s Disease: exactly where it starts, why it starts there, and how the disease spreads.
They’ve identified the specific part of the brain where Alzheimer’s starts- the lateral entorhinal cortex (LEC). The LEC normally accumulates tau, which makes it more likely to accumulate a specific protein called APP- and the combination of tau and APP damages neurons. Not good.
And Alzheimer’s spreads like a domino effect. When neurons are compromised in the LEC, the neurons in surrounding areas also become compromised- including the hippocampus, which plays an important role in long-term memory storage.
Researchers used fMRI imaging and worked with humans and mice to discover this information. By showing that early changes can be detected using fMRI- and knowing exactly how the process works- detecting the disease before it spreads could be much easier. And this new imaging method could be a very helpful way to determine effectiveness of potential drugs! Read more here: