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).
What's Popular in Sleep Cycle
-
JAN 10, 2021Genetics & Genomics
JAN 10, 2021The longer we stay awake without sleeping, the more difficult it can become to think straight. But our functioning is re ...Written By: Carmen LeitchJAN 10, 2021Microbiology
JAN 10, 2021People, animals, and even plants are known to have biological clocks, and new work has revealed that free-living bacteri ...Written By: Carmen LeitchJAN 07, 2021Clinical & Molecular DX
JAN 07, 2021Cardiovascular disease is the leading cause of death worldwide, taking nearly 18 million lives every year. Of these card ...Written By: Tara FernandezJAN 06, 2021Genetics & Genomics
JAN 06, 2021Our bodies run on a kind of molecular clock, which helps regulate and time certain functions beyond just waking and slee ...Written By: Carmen LeitchNOV 24, 2020Cancer
NOV 24, 2020Did you know sleeping is great? Apparently, getting a full eight hours every night can make you look fabulous and solve ...Written By: Jasper Cantrell
-
SEP 01, 2020 10:30 AM SGT
SEP 01, 2020 10:30 AM SGTThis 2-day virtual event organized across the Asia Pacific region aims to serve as a platform to share scientific knowledge and provide a discourse on the topic of infectious disease and imm...
- Memory Loss
- Prescription Drugs
- Electrophysiology
- Animal Behavior
- Depression
- Inflammatory Disease
- Animal Models
- Diagnostics
- Systems Biology
- Cell Therapy
- Cardiovascular Medicine
- Cellular Mechanism
- Science Education
- Protein Engineering
- Learning and Memory
- Molecular Neurobiology
- Clinical Research
- Blood
- Metabolism
- Neurochemistry
- Clinical Psychology
- Animal Production
- Immune System
- Disease Modeling
- General Medicine
- Biomedical Research
- Drug Development
- Genetic Engineering
- Physical Testing
- Bacteria
- Chronic Disease
- Physiology
- ALS
- Laboratory
- Nerve
- Protein
- Health Technology
- Cognition
- Engineering
- Cardiovascular Research
- Environment
- Cognitive Neuroscience
- Animal Research
- Pain
- Melatonin
- Mood
- Behavior Sciences
- Behavioral Neuroscience
- Plant
- Rodents