How the Brain Activity Is Linked to Sleep ?
Question by Sharp Shooter: How the brain activity is linked to sleep ?
plz explain the mechanism . Thanks .
Best answer:
Answer by SpringElf
During stage 1, which is light sleep, we drift in and out of sleep and can be awakened easily. Our eyes move very slowly and muscle activity slows. People awakened from stage 1 sleep often remember fragmented visual images. Many also experience sudden muscle contractions called hypnic myoclonia, often preceded by a sensation of starting to fall. These sudden movements are similar to the “jump” we make when startled. When we enter stage 2 sleep, our eye movements stop and our brain waves (fluctuations of electrical activity that can be measured by electrodes) become slower, with occasional bursts of rapid waves called sleep spindles. In stage 3, extremely slow brain waves called delta waves begin to appear, interspersed with smaller, faster waves. By stage 4, the brain produces delta waves almost exclusively. It is very difficult to wake someone during stages 3 and 4, which together are called deep sleep. There is no eye movement or muscle activity. People awakened during deep sleep do not adjust immediately and often feel groggy and disoriented for several minutes after they wake up. Some children experience bedwetting, night terrors, or sleepwalking during deep sleep.
Add your own answer in the comments!
Stroke Prevention Surgery Less Effective Than Meds, Lifestyle Change
Filed under: drug treatment centers in washington state
The final results of a stroke prevention study in patients with narrowed brain arteries confirm earlier findings: Medication plus lifestyle changes are safer and more effective at preventing stroke than a surgical technique called stenting. Enrollment …
Read more on RedOrbit
Shutdown = war on workers, poor
Filed under: drug treatment centers in washington state
Congressional rightists' 16-day action affected millions of people, especially those with low incomes, depriving them of essential programs and benefits. … This federal program has agencies in every state, but Congress must annually approve grants …
Read more on Workers World
Could More Good Samaritan Laws Slow the Opioid Overdose 'Epidemic'?
Filed under: drug treatment centers in washington state
Fourteen states have Good Samaritan laws giving limited immunity to drug users who call 911 during an overdose, and one Wisconsin lawmaker wants his state to be the next. Stopping the Overdose … are harder to find. “Without access to these strong …
Read more on Healthline