Contrary to popular belief, older adults enjoy emailing, instant messaging, Facebook and other forms of social technology. Not only that, but such online networking appears to reduce seniors' loneliness and even improve their health.
'Who broke Grandma's favorite vase?' As you listen to a chorus of 'I don't know' and 'Not me,' how will you determine the culprit? Conventional wisdom says, divide and conquer, but what does scientific research show us about questioning a group of people at one time?
An anonymous reader quotes a report from Inverse: Harvard University's Andrew Reece and the University of Vermont's Chris Danforth crafted an algorithm that can correctly diagnose depression, with up to 70 percent accuracy, based on a patient's Instagram feed alone. After a careful screening process, the team analyzed almost 50,000 photos from 166 participants, all of whom were Instagram users and 71 of whom had already been diagnosed with clinical depression. Their results confirmed their two hypotheses: first, that "markers of depression are observable in Instagram user behavior," and second, that "these depressive signals are detectable in posts made even before the date of first diagnosis." The duo had good rationale for both hypotheses. Photos shared on Instagram, despite their innocent appearance, are data-laden: Photos are either taken during the day or at night, in- or outdoors. They may include or exclude people. The user may or may not have used a filter. You can imagine an algorithm drooling at these binary inputs, all of which reflect a person's preferences, and, in turn, their well-being. Metadata is likewise full of analyzable information: How many people liked the photo? How many commented on it? How often does the user post, and how often do they browse? Many studies have shown that depressed people both perceive less color in the world and prefer dark, anemic scenes and images. The majority of healthy people, on the other hand, prefer colorful things. [Reece and Danforth] collected each photo's hue, saturation, and value averages. Depressed people, they found, tended to post photos that were more bluish, unsaturated, and dark. "Increased hue, along with decreased brightness and saturation, predicted depression," they write. The researchers found that happy people post less than depressed people, happy people post photos with more people in them than their depressed counterparts. and that depressed participants were less likely to use filters. The majority of "healthy" participants chose the Valencia filter, while the majority of "depressed" participants chose the Inkwell filter. Inverse has a neat little chart embedded in their report that shows the usage of Instagram filters between depressed and healthy users.
People with a family member who had an aortic dissection—a spontaneous tear in one of the body’s main arteries—should take note of the age that family member was when the aortic dissection occurred. According to a new study, aortic dissections have the potential to run in families and often occur within 10 years of the same age.
The number of cases of tuberculosis (TB) in India may be up to two to three times higher than current estimates, suggests a new study. TB is a bacterial infection, spread through inhaling tiny droplets from the coughs or sneezes of an infected person. India has the highest number of TB cases in the world, and accounts for at least a quarter of all cases worldwide.
The performances of our brain like thinking, remembering, perceiving and motion control can only arise through the interaction of the network of nerve cells. Now, neuroscientists show how nerve cells communicate with each other in neural networks.
New research has shown how a cell surface molecule, Lymphotoxin ? receptor, controls entry of T-cells into the thymus, and as such presents an opportunity to understanding why cancer patients who undergo bone-marrow transplant are slow to recover their immune system.
A major therapeutic challenge, the retinal prostheses that have been under development during the past ten years can enable some blind subjects to perceive light signals, but the image thus restored is still far from being clear. By comparing in rodents the activity of the visual cortex generated artificially by implants against that produced by “natural sight”, scientists have identified two factors that limit the resolution of prostheses. Based on these findings, they were able to improve the precision of prosthetic activation.
Beads, disks, bowls and rods: scientists have demonstrated the first methodological approach to control the shapes of nanovesicles. This opens doors for the use of nanovesicles in biomedical applications, such as drug delivery in the body, they say.
Researchers discovered a procedure to restore defective graphene oxide structures that cause the material to display low carrier mobility. By applying a high-temperature reduction treatment in an ethanol environment, defective structures were restored, leading to the formation of a highly crystalline graphene film with excellent band-like transport. These findings are expected to come into use in scalable production techniques of highly crystalline graphene films.
Pollution levels inside cars were found to be up to 40% higher while in traffic jams or at a red traffic light compared to free-flowing traffic conditions, new research indicates. The World Health Organization has placed outdoor air pollution among the top ten health risks faced by humans, linking with seven million premature deaths a year.
Solar energy can be stored by converting it into hydrogen. But current methods are too expensive and don't last long. Using commercially available solar cells and none of the usual rare metals, researchers have now designed a device that outperforms in stability, efficiency and cost.