Psychostimulants Hinder Sleep And Memory With Little Benefit

student adhd
Taking nonprescribed psychostimulants may slightly improve a person’s short-term focus but impede sleep and mental functions that rely on it — such as working memory. The use of prescription stimulants by those without medically diagnosed conditions marks a growing trend among young adults — particularly college students seeking a brain boost. “Healthy individuals who use …

Sleep Contributes To System Long-term Memory Consolidation

hippocampus
Repeated rehearsal can lead to the establishment of memory traces in the neocortex within a short timeframe, new research demonstrates. However, these traces are only sufficiently stable if a sleep phase follows learning – otherwise the brain continuously needs to call on the hippocampus to help with long-term storage of new memories, the study found. …

General Anesthesia Activated Neurons Identified In Hypothalamus

Supraoptic nucleus
Several different general anesthesia drugs knock you out by hijacking the neural circuitry that makes you fall sleep, researchers from a Duke University have found. The researchers traced this neural circuitry to a tiny cluster of cells at the base of the brain responsible for churning out hormones to regulate bodily functions, mood, and sleep. …

Single Neurons Require Sleep To Perform Nuclear Maintenance

Sleep increases chromosome dynamics
Researchers at Bar-Ilan University in Israel report a novel and unexpected function of sleep that they believe could explain how sleep and sleep disturbances affect brain performance, aging and various brain disorders. Using 3-D time-lapse imaging techniques in live zebrafish, the researchers were able to define sleep in single-chromosome resolution, and show for the first …

The Glymphatic System Works Better In Deep Non-REM Sleep

Anesthetic regimen effects CSF tracer distribution at the dorsal and ventral brain surfaces.
The depth of sleep can impact our brain's ability to efficiently wash away waste and toxic proteins, according to a new study from University of Rochester Medical Center (URMC). Since sleep often becomes increasingly lighter and more disrupted as we become older, the study reinforces and potentially explains the links between aging, sleep deprivation, and …