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Sleep Cycle
The sleep cycle: A sleep cycle lasts about 90 minutes and during that time we move through five stages of sleep. The first four stages make up our non-rapid eye movement (NREM) sleep, and the fifth stage is when rapid eye movement (REM) sleep occurs. NREM sleep: Across these four stages we move from very light sleep during Stage 1 down to very deep sleep in Stage 4. It is very difficult to wake someone who is in Stage 4 sleep. Across NREM sleep, we have little muscle activity and our eyes do not typically move, but all of our muscles retain their ability to function. REM sleep: As the name would imply – during this final stage of sleep, we have bursts of rapid eye movements. This is the stage of sleep in which most dreaming occurs. Our eyes are not constantly moving, but they do dart back and forth, up and down. These eye movements may be related to visual images of dreams, but that is not confirmed, and in general, the reason for these eye movements is still a mystery. Although our eyes are moving rapidly, the muscles that move our bodies are paralyzed (other important muscles, such as our heart and diaphragm continue to function normally).
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Giraffes are unique and have made many evolutionary adaptations. They have a very short sleep cycle, for example.Written By: Carmen LeitchMAR 08, 2021Cancer
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DEC 08, 2021
Drug Discovery & Development
It might be best to think twice before reaching for that midnight snack. A recent research report published in
...
Written By:
J. Bryce Ortiz
NOV 17, 2021
Cancer
As many people start to plan their Thanksgiving dinners, there will inevitably be a lot of talk about the turkey.
...
Written By:
Katie Kokolus
NOV 05, 2021
Cardiology
Research has suggested that policies aren't considered successes or failures on the basis of their merits. Daylight savi
...
Written By:
Carmen Leitch
OCT 29, 2021
Neuroscience
Air pollution induces brain inflammation in male mice, which in turn reduces sperm count and fertility. The correspondin
...
Written By:
Annie Lennon
OCT 03, 2021
Cell & Molecular Biology
Organisms follow the cycle of the day, even at the cellular level, creating an internal clock. Humans' biology will
...
Written By:
Carmen Leitch
SEP 07, 2021
Health & Medicine
Researchers find that even one night of sleep loss results in impaired functioning and well being.
AUG 23, 2021
Genetics & Genomics
The daily cycle of the planet is reflected in the biology of plants and animals. Even our cells are influenced by what&#
...
Written By:
Carmen Leitch
AUG 20, 2021
Earth & The Environment
August 20th is World Mosquito Day, but we’re not celebrating the mosquitoes themselves. Instead, we are celeb
...
Written By:
Samantha Lott
AUG 17, 2021
Clinical & Molecular DX
Obstructive sleep apnea, or OSA, is the most commonly reported sleep disorder, with loud snoring being one of the tell-t
...
Written By:
Tara Fernandes
JUN 24, 2021
Neuroscience
Researchers from Japan and the State University of New York at Buffalo have found that melatonin may affect more than sl
...
Written By:
Annie Lennon
JUN 12, 2021
Health & Medicine
Teenagers are renowned for going to bed late and sleeping in. But if disrupted sleep gets out of hand for young people,
...
Written By:
Angela Dowden
JUN 11, 2021
Cannabis Sciences
According to the Sleep Association, around 50-70 million adults in the US have a sleep disorder. Some claim that ca
...
Written By:
Annie Lennon
JUN 09, 2021
Genetics & Genomics
Could it be possible to reduce the risk of developing depression by 23% simply by waking up an hour earlier? That's what
...
Written By:
Carmen Leitch
MAY 17, 2021
Microbiology
The circadian rhythm is the body's clock, and it influences physiology at the cellular level; it can help animals, inclu
...
Written By:
Carmen Leitch
MAY 04, 2021
Cardiology
Sleep is a time for your body to rest and recover from the day. Your heart slows down, and your breathing relaxes.
...
Written By:
Jasper Cantrell
APR 09, 2021
Neuroscience
Up to 1 in 4 people are affected by mood disorders in their lifetimes. Due to a lack of objective diagnostic procedures,
...
Written By:
Annie Lennon
APR 04, 2021
Plants & Animals
Octopuses are known to sleep and change their colors while they do it. Researchers have now linked these color changes t
...
Written By:
Carmen Leitch
MAR 19, 2021
Genetics & Genomics
Giraffes are unique and have made many evolutionary adaptations. They have a very short sleep cycle, for example.
Written By:
Carmen Leitch
MAR 08, 2021
Cancer
New research released from Washington State University Health Sciences Spokane and published online in the Journal
...
Written By:
Kathryn DeMuth Sullivan
MAR 03, 2021
Microbiology
Medical treatments for the care of premature babies have allowed many individuals to get through that challenge and lead
...
Written By:
Carmen Leitch
JAN 10, 2021
Genetics & Genomics
The longer we stay awake without sleeping, the more difficult it can become to think straight. But our functioning is re
...
Written By:
Carmen Leitch
JAN 10, 2021
Microbiology
People, animals, and even plants are known to have biological clocks, and new work has revealed that free-living bacteri
...
Written By:
Carmen Leitch
JAN 07, 2021
Clinical & Molecular DX
Cardiovascular disease is the leading cause of death worldwide, taking nearly 18 million lives every year. Of these card
...
Written By:
Tara Fernandes
JAN 06, 2021
Genetics & Genomics
Our bodies run on a kind of molecular clock, which helps regulate and time certain functions beyond just waking and slee
...
Written By:
Carmen Leitch