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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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Clinical & Molecular DX
It may be possible to gain insight into our health by continuously monitoring wrist temperature, suggested a new study r
...
Written By:
Carmen Leitch
MAY 11, 2023
Cardiology
A healthy diet and regular exercise are the keys to clinically significant weight loss over time.
Written By:
Savannah Logan
MAR 29, 2023
Clinical & Molecular DX
A new review paper, which takes a broad view of research developments in a field, has suggested that the circadian rhyth
...
Written By:
Carmen Leitch
MAR 17, 2023
Cardiology
Have friends and family grumbled about the impact of the recent springtime change on their clarity and well-being? Dayli
...
Written By:
Kerry Charron
MAR 11, 2023
Neuroscience
An Irish proverb advises, “A good laugh and a long sleep are the two best cures for anything.” Now, a scient
...
Written By:
Kerry Charron
MAR 01, 2023
Neuroscience
For those with Post Traumatic Stress Disorder (PTSD), norepinephrine and serotonin levels remain high during the rapid e
...
Written By:
Kerry Charron
FEB 22, 2023
Health & Medicine
Insomnia can increase the risk of cardiovascular events, obesity, diabetes, and other illnesses, so scientists are seeki
...
Written By:
Kerry Charron
JAN 10, 2023
Neuroscience
Dr. Gina Turrigiano is the Joseph Levitan Professor of Vision Science in the Biology Department at Brandeis University,
...
DEC 30, 2022
Health & Medicine
A study published in Nature Communications found that people sleep less on average in mid-adulthood than in early and la
...
Written By:
Kerry Charron
DEC 04, 2022
Neuroscience
A new study published in Frontiers in Psychology examined the effect of different parental sleep-supporting techniques o
...
Written By:
Kerry Charron
OCT 23, 2022
Plants & Animals
A recent study highlights that animals calibrate their sleep cycle in response to their environment. Researchers from Wa
...
Written By:
Kerry Charron
OCT 12, 2022
Cannabis Sciences
A study published in Menopause found that women are increasingly using medical cannabis to alleviate menopause-related s
...
Written By:
Kerry Charron
SEP 11, 2022
Neuroscience
Researchers have found that circadian rhythm disruption (CRD) is a common factor among multiple mental health conditions
...
Written By:
Annie Lennon
SEP 08, 2022
Earth & The Environment
In a recent study published in Temperature, a researcher from the University of California, Los Angeles (UCLA) discusses
...
Written By:
Laurence Tognetti, MSc
SEP 06, 2022
Neuroscience
A study published in Current Biology found that fruit flies have internal sensors, or “absolute heat” recept
...
Written By:
Kerry Charron
JUL 20, 2022
Cardiology
Keeping your bedroom dark at night could have a major impact on your health.
Written By:
Savannah Logan
JUN 22, 2022
Neuroscience
A study published in Brain shows that normal human brain temperature varies by region, age, sex, menstrual cycle, and ti
...
Written By:
Kerry Charron
JUN 16, 2022
Health & Medicine
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...
Written By:
Kerry Charron
MAY 25, 2022
Neuroscience
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...
Written By:
Kerry Charron
MAY 09, 2022
Health & Medicine
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...
Written By:
Alexandria Bass
MAR 31, 2022
Cardiology
Even moderate light at night can impact health and sleep quality.
Written By:
Savannah Logan
MAR 30, 2022
Neuroscience
Researching the human brain, a unique organ among organisms, is extremely challenging, so it still holds many mysteries.
...
Written By:
Carmen Leitch
MAR 14, 2022
Infographics
It's common klnowledge that our circadian rhythms regulate our sleep-wake cycles. But do you know how it work
...
Written By:
Annie Lennon