London, Nov 10 (IANS) If you exercise before work, or forego fried food for fruits and salads, you can expect brain functions to improve over time, according to a new study.
Living a healthier lifestyle could increase executive function, which is the ability to exert self-control, set and meet goals, resist temptation and solve problems, the study said.
"People who make a change to their health behaviour, like participating in physical activity, eating less processed food, or consuming more fruits and vegetables, can see an improvement in their brain function over time and increase their chances of remaining healthy as they age," said one of the researchers Julia Allan from University of Aberdeen in Britain.
The researchers analysed the relationship between physical activity and executive function, adjusting for other variables such as age, gender, education, wealth and illness and found evidence that the relationship between the two is bidirectional.
Specifically, individuals with poor executive function showed subsequent decreases in their rates of participation in physical activity and older adults who engaged in sports and other physical activities tended to retain high levels of executive function over time.
Researchers noted that while the study, published in the journal Frontiers in Neuroscience, focused on physical activity and its relationship to executive function, it is likely a positive feedback loop also exists between executive function and eating nutritious foods.
Similarly, it is likely that negative feedback loops also exist, in that unhealthy behaviours such as smoking or drinking too much alcohol will be both a result of and a predictor of declining executive function, the researchers said.
London, Nov 10 (IANS) Scientists have for the first time used a neural prosthetic to restore walking movement directly to the legs of non-human primates.
In the study, the researchers from Brown University in Rhode Island, US, used a wireless "brain-spinal interface" to bypass spinal cord injuries in a pair of rhesus macaques, restoring intentional walking movement to a temporarily paralysed leg.
Walking is made possible by a complex interplay among neurons in the brain and spinal cord.
Electrical signals originating in the brain's motor cortex travel down to the lumbar region in the lower spinal cord, where they activate motor neurons that coordinate the movement of muscles responsible for extending and flexing the leg.
To calibrate the decoding of brain signals, the researchers implanted the brain sensor and wireless transmitter in healthy macaques. The signals relayed by the sensor could then be mapped onto the animals' leg movements.
They showed that the decoder was able to accurately predict the brain states associated with extension and flexion of leg muscles.
"The system we have developed uses signals recorded from the motor cortex of the brain to trigger coordinated electrical stimulation of nerves in the spine that are responsible for locomotion," said David Borton, Assistant Professor at Brown University.
The study, published in the Journal Nature, suggests that a brain-controlled spinal stimulation system may enhance rehabilitation after a spinal cord injury.
New York, Nov 10 (IANS) If you want to improve your sleep, better cut down on smartphone use near bedtime, suggests a new study that found longer average screen-time is associated with poor sleep quality and less sleep overall.
Poor sleep is associated with health conditions such as obesity, diabetes and depression.
"Exposure to smartphone screens, particularly around bedtime, may negatively impact sleep," the study said.
For the study, Matthew Christensen from the University of California - San Francisco, US, and colleagues sought to test the hypothesis that increased screen-time may be associated with poor sleep by analysing data from 653 adult individuals across the US.
Participants installed a smartphone application which recorded their screen-time, defined as the number of minutes in each hour that the screen was turned on, over a 30-day period.
They also recorded their sleeping hours and sleep quality.
The researchers found that each participant totalled an average of 38.4 hours over this period, with smartphones being activated on average for 3.7 minutes in each hour.
Longer average screen-time was associated with poor sleep quality and less sleep overall, particularly when smartphones were used near participants' bedtime, according to the study published in the journal PLOS ONE.
New York, Nov 10 (IANS) Microsoft has released its new Windows 10 Creators test version which can let a user control external monitors from tablets without attaching a mouse.
"Use it just like you would a physical touchpad to control content on the connected screen," software engineer Dona Sarkar said in a blog.
New York, Nov 10 (IANS) Ever got irritated when Facebook asked you to re-think a password for your account even if you typed in the one you have been using for years? That's because the social networking platform wants your account safe.
London, Nov 16 (IANS) Using artificial intelligence techniques, a team of researchers has designed a system that can automatically learn the association between images and the sounds they could possibly make.
New York, Nov 10 (IANS) Individuals who regularly consume sugar-sweetened beverages such as soda, colas and other carbonated beverages, and non-carbonated fruit drinks such as lemonade and fruit punch, may be at an higher risk of developing prediabetes, new research has revealed.
Prediabetes is a condition in which blood sugar is high, but not high enough to be Type 2 diabetes. If diagnosed early, it is reversible through lifestyle changes such as diet and exercise.
"Our results suggest that high sugar-sweetened beverage intake increases the chances of developing early warning signs for Type 2 diabetes," said Nicola McKeown, Associate Professor at the Tufts University, Massachusetts in the US.
"If lifestyle changes are not made, individuals with prediabetes are on the trajectory to developing diabetes," McKeown added.
The findings showed that adults who drink a can of soda per day or a median of six 12 fluid ounce servings a week are at 46 per cent higher risk of developing prediabetes.
Further, the highest consumers of sugar-sweetened beverages had nearly eight per cent higher insulin resistance scores, compared to low- or non-consumers.
On the other hand, diet soda -- defined as low-calorie cola or other carbonated low-calorie beverages -- intake was found with no associations with risk for either prediabetes or insulin resistance, the study said.
However, and further studies are needed to reveal the long-term health impact of artificially sweetened drinks, the researchers noted.
Intake of sugar-sweetened beverage should be limited, or replaced with healthier alternatives such as water or unsweetened coffee or tea, McKeown recommended.
For the study, the researchers analysed 1,685 middle-aged adults over a period of 14 years, who did not have diabetes or prediabetes during an initial baseline examination.
The findings were published in the Journal of Nutrition.