Sunday December 15, 2019

“Whether Virtual Reality Can Prevent Dementia” Scientists Study

A study at the University of Southern California’s Keck School of Medicine sees if a dose of VR can help prevent age-related cognitive decline and dementia

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AI Skin, silicon, Virtual Reality, VR
This is ideal for wearable applications, such as for testing a patient's proprioception in medical applications. VOA

For three days a week, Wayne Garcia has been getting an unconventional workout. He starts by putting on a virtual reality (VR) headset. He then gets on a specially designed exercise bike and starts peddling. He is taking part in a study at the University of Southern California’s Keck School of Medicine to see if a dose of VR can help prevent age-related cognitive decline and dementia.

“It’s very scary that one day that could be me. Grandparents both had dementia. My father, he had dementia, as well, and my mom has dementia,” said Garcia, who painfully remembered his father reading the newspaper upside down and almost setting the house on fire by putting a towel on the heater.

“Just the sadness — you remember what your dad was like, what your mom was like when they were all good, and then the decline now. And now you’re taking care of them rather than when they used to take care of you,” Garcia said.

scientists, dementia, prevention, VR
Living a healthy lifestyle can reduce the risk of Alzheimer’s or other dementia, even if you have a genetic risk, a large study found. VOA

Preventing dementia

Garcia is participating to see if using virtual reality concurrently with exercise can help prevent dementia in the future.

“The actual diagnostic definition of dementia is when a person is no longer able to take care of themselves, things like paying the bills, driving, cooking for themselves, dressing themselves. This is really late stage. It happens much later in the progression of the disease. A lot of the neurodegenerative diseases, which are the underlying ideologies of dementia, take 10, 20 years to develop,” said Judy Pa, assistant professor at the Institute for Neuroimaging and Informatics in the Keck School of Medicine at the University of Southern California (USC).

Pa is part of a team of researchers studying the effects of virtual reality on the brain and cognition related to aging. Pa said unlike 2D games, VR provides a first-person, 3D immersive experience that is critical to spatial memory training.

“Our goal is to prevent dementia (and) to prevent Alzheimer’s disease. There are no effective treatments yet. We hope that we will get there eventually, but my perspective and the research that we do in my laboratory at USC is really surrounding prevention,” Pa said.

scientists, dementia, prevention, VR
The goal is to prevent or even delay the onset of cognitive decline so people can have a solid quality of life during their golden years. Pixabay

Targeting risk factors

The VR study targets some of the risk factors of Alzheimer’s disease and cognitive dysfunction, which include a sedentary lifestyle and lack of cognitive and social stimulation. The VR study exercises the participants’ body and brain at the same time, challenging the memory and decision-making part of their brain.

Participants have to pedal on the exercise bike and keep their heart rate up. In the VR experience, they are trying to learn and remember a route while picking up food items by hitting the brakes, then feeding the food to some animals.

“Understanding changes in the brain that happen with exercise, changes in the brain that happen when you’re in an enriched environment and putting those two together, and that’s what our intervention is currently targeting,” Pa said.

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Even if virtual reality can help, it may not be for everyone. In a feasibility study, 4 out of 20 people withdrew from the research because of symptoms of motion sickness. Pa will be conducting trials over the next year with participants who are 50 to 80 years old to gather additional data.

Garcia has high hopes for what VR might mean for the future. “There might be a place where you could go, and you can get your daily dose of virtual reality and cardio to keep the mind going,” he said.

Still, in the early stages of research, the goal is to prevent or even delay the onset of cognitive decline so people can have a solid quality of life during their golden years. (VOA)

Next Story

Scientists Create Map of Wind Circulation in the Upper Atmosphere of Mars

Scientists map winds in Mars' upper atmosphere for first time

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Mars
The new map of Mars winds helps scientists to better understand the workings of the Martian climate. (Representational image). Pixabay

Using data from NASA’s MAVEN spacecraft, researchers have created the first-ever map of wind circulation in the upper atmosphere of Mars.

The new map of Mars winds helps scientists to better understand the workings of the Martian climate, giving them a more accurate picture of its ancient past and its ongoing evolution.

“The observed global circulation provides critical inputs needed to constrain global atmospheric models,” said Mehdi Benna of NASA’s Goddard Space Flight Center in Greenbelt, Maryland.

“These are the same models that are used to extrapolate the state of the Martian climate into the distant past,” added Benna in the first paper published in the journal Science.

MAVEN (Mars Atmosphere and Volatile EvolutioN mission) celebrated the five-year anniversary of its entrance into orbit around Mars on September 21.

Mission Mars
The winds observed in the Martian upper atmosphere are sometimes similar to what we see in global model simulations. (Representational image). Pixabay

The primary scientific goal of the mission is to study what is left of Mars’ atmosphere to determine how, in the distant past, an ocean-covered and potentially habitable Mars became the dry and desolate place it is today.

“The winds observed in the Martian upper atmosphere are sometimes similar to what we see in global model simulations, but other times can be quite different,” said Kali Roeten of University of Michigan.

“These winds can also be highly variable on the timescale of hours, yet in other cases, are consistent throughout the observation period, said Roeten in the second paper published in the Journal of Geophysical Research-Planets.

Upper atmospheric winds on Earth have already been mapped in detail.

Winds drive a series of processes in the atmosphere that can affect the propagation of radio waves, which are crucial for communications purposes for those on the surface, and the prediction of paths satellites will take in their orbit around Earth.

Mapping Martian winds, therefore, is a crucial step towards understanding characteristics of extraterrestrial atmospheres beyond what we know about processes on Earth.

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The upper atmospheric winds on both Earth and Mars are in the planets’ respective thermospheres, which are areas where temperature increases with height.

This discovery was the first detection of topography-induced gravity wave ripples in the thermosphere of any planet, even Earth. (IANS)