Author: Anonymous

In your own words, explain what the brain chemical GABA does.

What does the phrase tune out mean in paragraph 7?

What does the phrase tune out mean in paragraph 7?

What does the word coordinate mean in the context of paragraph 8?8. The pineal gland, located within the brain’s two hemispheres, receives signals from the SCN and increases production of the hormone melatonin, which helps put you to sleep once the lights go down.  People who have lost their sight and cannot coordinate their natural wake-sleep cycle using natural light can stabilize their sleep patterns by taking small amounts of melatonin at the same time each day.  Scientists believe that peaks and valleys of melatonin over time are important for matching the body’s circadian rhythm to the external cycle of light and darkness.

What does the word regulated mean in the context of paragraph 4? 4. Sleep is a complex and dynamic process that affects how you function in ways scientists are now beginning to understand.  This article describes how your need for sleep is regulated and what happens in the brain during sleep.

Which is the best paraphrase of the sentence “In general, people are getting less sleep than they need due to longer work hours and the availability of round the clock entertainment and other activities”?

According to the reading, most blind people can see some light, allowing them to regulate their sleep cycles, but for those who cannot, what can they do to regulate their sleep/wake cycle?

Based on the reading, how does medication affect the sleep of elderly people?

What does the word coordinate mean in the context of paragraph 8?8. The pineal gland, located within the brain’s two hemispheres, receives signals from the SCN and increases production of the hormone melatonin, which helps put you to sleep once the lights go down.  People who have lost their sight and cannot coordinate their natural wake-sleep cycle using natural light can stabilize their sleep patterns by taking small amounts of melatonin at the same time each day.  Scientists believe that peaks and valleys of melatonin over time are important for matching the body’s circadian rhythm to the external cycle of light and darkness.

Why do you think it’s important for the brain stem to relax muscles so that we don’t act out in our dreams?