Tag

Brain Blood Flow

All articles tagged with #brain blood flow

New Studies Link Long COVID Fatigue to Reduced Brain Blood Flow and Dopamine Neuron Loss
health11 days ago

New Studies Link Long COVID Fatigue to Reduced Brain Blood Flow and Dopamine Neuron Loss

Two recent studies identify distinct biological mechanisms behind persistent fatigue in long COVID. A Swedish study found reduced cerebral blood flow in the brains of fatigued patients, while a Canadian study linked the condition to the loss of dopamine-releasing neurons in the striatum. These findings suggest that neurovascular and dopaminergic disruptions may underpin symptoms like exhaustion, slow movement, and memory issues, potentially guiding future treatments.

The Impact of Caffeine on REM Sleep and Brain Blood Flow
health3 years ago

The Impact of Caffeine on REM Sleep and Brain Blood Flow

A study conducted on mice by researchers from the University of California Los Angeles has found that caffeine consumption can delay the onset of REM sleep and alter blood flow to the brain. The study observed that caffeine caused mice to sleep more solidly but delayed their short nap during the latter part of their awake phase. Additionally, daily caffeine administration shifted the onset of sleep, particularly REM sleep, by up to two hours relative to the light-dark cycle. The researchers also discovered that brain blood flow was higher when the mice were awake and lower during sleep, except during periods of REM sleep when there were significant increases in brain blood flow. These findings suggest that caffeine affects sleep patterns and brain function, potentially impacting overall sleep quality.