Dementia leads to impairment of mental processes, such as memory, thinking, reasoning and judgement, and thus seriously impairs an individual's ability to perform daily functions.

The fossils analyzed were found between 2011 and 2019 by researchers at the Federal University of Santa Maria (UFSM) in an area known as Quarta Colonia near Santa Maria in Rio Grande do Sul. Some of those researchers are co-authors of the article.

Late last week, NASA said it expected most of the 5,400-pound (2,450-kilogram) Earth Radiation Budget Satellite to burn up in the atmosphere, but that some pieces might survive.

Subtle variations in every day cognitive performance can signal changes in brain states that are known to increase the risk of illness such as stress, fatigue and poor sleep. The team wanted to measure cognitive function and explore whether it was predictive of immune performance after exposure to a respiratory virus.

NASA said this slingshotting wil help Lucy gain part of the orbital energy it needs to travel to the unexplored population of asteroids.

Research by Swedish paleogeneticist Svante Paabo, who won the medicine Nobel prize last week, helped reveal that people of European descent and almost everyone worldwide have a small percentage of Neanderthal DNA.

This pattern hints how stars and planets might have formed. The fact that the dust shells have survived suggests that the dust can endure in the harsh environment between stars and go on to provide the raw materials for new stars and planets.

Scientists can assemble small sections of human brain tissue made from stem cells in petri dishes, and have already done so with more than a dozen brain regions.

His weeklong moonshot — its date to be determined and years in the future — will bring him within 125 miles (200 kilometers) of the lunar far side.