Inherent randomness in the flow rate of red blood cells through capillaries could be a cause of oxygen fluctuations in the brain.
Neuroimaging allowed researchers to make some key discoveries about the developing brain. The study revealed male children had overall greater brain volume, but the size of specific brain structures did not differ between sexes, nor did cognitive ability. Additionally, regardless of the sex or size of the child, the ratio between the size of the brain and the volume of cerebrospinal fluid was universal.
Flavored e-cigarette tobacco engages the taste system, while non-flavored vaped nicotine triggers the brain's reward system in a similar way observed when people smoke traditional cigarettes.
Cultural, linguistic, and biological diversity are linked, researchers say. The link may be to preserve both natural environments and indigenous populations.
People who experience schadenfreude, the emotion of feeling pleasure at another person's misfortune, when they hear a controversial celebrity is sick are less willing to take preventative health measures themselves.
Stress, boredom, and more free time may account for the rise in cigarette consumption in smokers during the COVID pandemic.
A new study reveals why some people with the herpes simplex 1 virus experience painful lesions, while others have no symptoms and yet still spread the infection. Researchers say the difference could be a result of how variations in the way certain strains of HSV-1 activate gene expression in neurons.
People who experience fewer stressors in daily life report better emotional stability, moods, and overall health. However, those who are less stressed score worse on cognitive tests than those who experience daily stressors. Those who are stress-free are also less likely to give emotional support or experience positive things happening throughout the day.
Zombie movies and dystopian entertainment may have helped people prepare for the COVID-19 pandemic, researchers report.
Men and women who endorsed hegemonic masculinity were more likely to vote for, and have positive opinions of Trump.
Those who consider themselves to be light smokers, in that they smoke between one to four cigarettes a day, meet the criteria for nicotine addiction.
The number of times a woman gives birth has an effect on physical aging. Women who give birth less than, or more than, three or four times age faster after menopause.
