Hiển thị các bài đăng có nhãn virtual. Hiển thị tất cả bài đăng
Hiển thị các bài đăng có nhãn virtual. Hiển thị tất cả bài đăng

Thứ Năm, 2 tháng 3, 2017

Using Virtual Reality to Detect Mild Cognitive Impairment

The VSM payment screen (screenshot from the English version of the application). NeuroscienceNews.com image is credited to Aristotle University of Thessaloniki (AUTH).

Researchers report mild cognitive impairment can be remotely detected with the help of a self-administered brain training game.



Mild cognitive impairment (MCI), a condition that often predates Alzheimer’s disease (AD), can be remotely detected through a self-administered virtual reality brain training game.

Greek researchers demonstrated the potential of a self-administered virtual supermarket cognitive training game for remotely detecting mild cognitive impairment (MCI), without the need for an examiner, among a sample of older adults. MCI patients suffer from cognitive problems and often encounter difficulties in performing complex activities such as financial planning. They are at a high risk for progressing to dementia however early detection of MCI and suitable interventions can stabilize the patients’ condition and prevent further decline.



It has been shown that virtual reality game-based applications and especially virtual supermarkets can detect MCI. Past studies have utilized user performance in such applications along with data from standardized neuropsychological tests in order to detect MCI. The team that conducted this study was the first scientific team to achieve reliable MCI detection using a virtual reality game-based application on its own. In that previous study , administration of the virtual super market (VSM) exercise was conducted by an examiner. The present study eliminated the need for an examiner by calculating the average performance of older adults using a special version of the VSM application, the VSM Remote Assessment Routine (VSM-RAR), at home on their own, for a period of one month. It is the first instance where a self-administered virtual reality application was used to detect MCI with a high degree of reliability.



The research team included scientists from the Aristotle University of Thessaloniki (AUTH), the Centre for Research and Technology Hellas/Information Technologies Institute (CERTH/ITI), the Greek Association of Alzheimer’s Disease and Related Disorders (GAADRD) and the Network Aging Research (NAR) of the University of Heidelberg.

In an article published in the Journal of Alzheimer’s Disease, the researchers have indicated that the virtual supermarket remote assessment routine (VSM-RAR) application displayed a correct classification rate (CCR) of 91.8% improving VSM’s CCR as assessed in the previous VSM study while achieving a level of diagnostic accuracy similar to the most accurate standardized neuropsychological tests, which are considered the gold standard for MCI detection.

Self-administered computerized cognitive training exercises/games are gaining popularity among older adults as an easy and enjoyable means of maintaining cognitive health. Such applications are especially popular among older adults who consider themselves healthy and are not inclined to visit specialized memory clinics for cognitive assessment. If self-administered games and exercises could also detect cognitive disorders, initial cognitive screening could be conducted remotely. The wide implementation of this method of remote screening would facilitate the detection of cognitive impairment at the MCI stage thus allowing for more efficient therapeutic interventions.



This preliminary study indicates that automated, remote MCI screening is feasible. This method could be utilized to screen the majority of the older adult population, as it dramatically lowers examination-related costs. The social and economic benefits, especially caregiver and healthcare service burden, of the early detection of cognitive disorders could be enormous. At the same time, as older adults are becoming increasingly computer savvy, it is important to create software that meets their needs and allows them to remain healthy and active. Out team continues its research on the VSM with the aim of improving its usability, shortening its administration time and supplementing the science behind VSM with additional data.
Source: Stelios Zygouris – IOS Press
Image Source: NeuroscienceNews.com image is credited to Aristotle University of Thessaloniki (AUTH).

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Thứ Hai, 16 tháng 1, 2017

Meditation in virtual reality: When Philosophy and the Business of Synthetic Technology meet

There’s no paradox in finding your true self via virtual reality because everyday reality is a simulation, says self-help guru Deepak Chopra of his latest venture



The cosmos swirls, wisps of purple, yellow and orange light flickering across the darkness of space, then across the visage of Buddha. An otherworldly plain fills the horizon, framed by the branches of a tree – the tree of enlightenment.

A familiar voice intrudes. “What or who is having this experience right this moment, right now?” Pause. “It is your own being. It is your innermost being that is having the experience, your true self.”

The voice continues. “Live here, with no regrets, no anticipation, no resistance, and you will be free. Freedom is always now. Being is now.”



Even if you enjoy psychedelic animation graphics you may struggle to live here, however, because visits last just 20 minutes and they are not real, not free and not quite now.
Welcome – if you have the headset or appropriate app – to Deepak Chopra’s latest venture: virtual reality (VR) meditation.

The new age entrepreneur and self-help guru unveiled the simulation, titled “Finding your true self”, this week at the headquarters of Wevr, a VR firm in Silicon Beach, Los Angeles’ tech hub.

Chopra, who narrates the simulation, hopes to sell the experience via booths at airports, hospitals and other locations, and via phones and laptops enabled with VR platforms.
“In 20 minutes you get a journey to enlightenment. The goal is to feel grounded and understand yourself a little better,” he told the Guardian. The technology, he said, facilitated an understanding of consciousness which eluded even René Descartes, the 17th century French philosopher. “He was good for his time but didn’t have VR to take it to the next level.”
A bold claim for a nascent technology more associated with gaming and pornography than reflection and contemplation. But Chopra, 68, has not built a lucrative brand and sold millions of books such as The Seven Spiritual Laws of Success through timidity.



Meditation’s benefits – improved focus, lower stress, inner peace – require investments of time, effort and discipline which frustrate many would-be practitioners. A vast market, Chopra hopes for a simulation which mixes “insights, contemplation and entertainment”.

Meditation purists may wonder if that is cheating. Those who simply wonder if it works will be able to find out when the product launches, perhaps in a few weeks. “Soon, very soon,” said Anthony Batt, Wevr’s co-founder. The app will cost $10, he said.

For that, according to a three-minute trailer shown to the Guardian and others at the company’s headquarters, you get trippy graphics, heavy on purple, with otherworldly sound effects laid over statements which, depending on perspective, are insightful, gnomic or nonsense.

There was no paradox between finding your true self via virtual reality because everyday reality is itself a simulation, said Chopra. An insect with 100 eyes, for instance, views the world differently than a human.

“For 30 years people have been coming to my lectures saying they don’t get it. Well now they can.”

Asked if the simulation tried to cross Descartes, who coined the maxim “I think, thefore I am,” with the science fiction film The Matrix, Chopra beamed. “Absolutely!”



The simulation features the Bodhi tree under which Buddha is said to have sat.
The project is the brainchild of Chopra’s son, Gotham, a Los Angeles film-maker. “I’ve been hearing my father talk about simulation for 30 years. I realized this would be a tool for him.”

Earlier versions featuring water were discarded for an impressionistic interpretation of the Bodhi tree in eastern India under which Buddha is said to have sat around 500 BC, seeking and eventually finding enlightenment. “We wanted to replicate that,” said Gotham.

Designers worked on the project at Wevr’s headquarters, a Frank Gehry-designed house where Dennis Hopper lived, partied and encountered his own virtual reality through alcohol and drugs.

Strapping on a headset or peering at a computer screen, were not inimical to contemplation, said Chopra. “I’ve never been too attached to tradition. We’re an evolving species. If you don’t keep up with technology you’re not in touch with the zeitgeist and you may as well pack it in.”
Source Rory Carroll, Los Angeles

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