Researchers report different sleep schedules with the same amount of total sleep time impact the teenage brain differently. Those who nap in the afternoon, but sleep less at night, have higher levels of blood glucose than those who sleep longer at night, the study reports.
A new study in mice reveals a possible link between the use of SSRI antidepressants during pregnancy and an increased risk of autism-like symptoms in offspring. Offspring exposed to fluoxetine (Prozac) in utero were more likely to exhibit impaired neurotransmission caused by an overactive serotonin receptor in the prefrontal cortex, an area of the brain implicated in modulating social behaviors. However, treating the mice with a compound that blocks the receptor alleviated the behavioral problems and improved working memory.
The chemical probe CDr20 can label microglia in living cells, researchers report.
As people age, the brain networks associated with cognition become less efficient at information transfer and more vulnerable to disturbance.