Study: Memories of music cannot be lost to Alzheimer's and dementia

The part of your brain responsible for ASMR catalogs music, and appears to be a stronghold against Alzheimer's and dementia.

Some music inspires you to move your feet, some inspires you to get out there and change the world. In any case, and to move hurriedly on to the point of this article, it's fair to say that music moves people in special ways. 


If you're especially into a piece of music, your brain does something called Autonomous Sensory Meridian Response (ASMR), which feels to you like a tingling in your brain or scalp. It's nature's own little "buzz", a natural reward, that is described by some as a "head orgasm". Some even think that it explains why people go to church, for example, "feeling the Lord move through you", but that's another article for another time. 

Turns out that ASMR is pretty special. According to a recently published study in The Journal of Prevention of Alzheimer's Disease (catchy name!), the part of your brain responsible for ASMR doesn't get lost to Alzheimer's. Alzheimer's tends to put people into layers of confusion, and the study confirms that music can sometimes actually lift people out of the Alzheimer's haze and bring them back to (at least a semblance of) normality... if only for a short while. ASMR is powerful stuff! 

This phenomenon has been observed several times but rarely studied properly. One of the most famous examples of this is the story of Henry, who comes out of dementia while listening to songs from his youth:  

Jeff Anderson, M.D., Ph.D., associate professor in Radiology at the Univerity of Utah Health and contributing author on the study, says  "In our society, the diagnoses of dementia are snowballing and are taxing resources to the max. No one says playing music will be a cure for Alzheimer's disease, but it might make the symptoms more manageable, decrease the cost of care and improve a patient's quality of life."

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Scientists study tattooed corpses, find pigment in lymph nodes

It turns out, that tattoo ink can travel throughout your body and settle in lymph nodes.

17th August 1973: An American tattoo artist working on a client's shoulder. (Photo by F. Roy Kemp/BIPs/Getty Images)
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In the slightly macabre experiment to find out where tattoo ink travels to in the body, French and German researchers recently used synchrotron X-ray fluorescence in four "inked" human cadavers — as well as one without. The results of their 2017 study? Some of the tattoo ink apparently settled in lymph nodes.


Image from the study.

As the authors explain in the study — they hail from Ludwig Maximilian University of Munich, the European Synchrotron Radiation Facility, and the German Federal Institute for Risk Assessment — it would have been unethical to test this on live animals since those creatures would not be able to give permission to be tattooed.

Because of the prevalence of tattoos these days, the researchers wanted to find out if the ink could be harmful in some way.

"The increasing prevalence of tattoos provoked safety concerns with respect to particle distribution and effects inside the human body," they write.

It works like this: Since lymph nodes filter lymph, which is the fluid that carries white blood cells throughout the body in an effort to fight infections that are encountered, that is where some of the ink particles collect.

Image by authors of the study.

Titanium dioxide appears to be the thing that travels. It's a white tattoo ink pigment that's mixed with other colors all the time to control shades.

The study's authors will keep working on this in the meantime.

“In future experiments we will also look into the pigment and heavy metal burden of other, more distant internal organs and tissues in order to track any possible bio-distribution of tattoo ink ingredients throughout the body. The outcome of these investigations not only will be helpful in the assessment of the health risks associated with tattooing but also in the judgment of other exposures such as, e.g., the entrance of TiO2 nanoparticles present in cosmetics at the site of damaged skin."

Photo by Alina Grubnyak on Unsplash
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