REM Cycle

The importance of getting enough rest is no secret but the REM cycle is among the more mysterious aspects of sleeping. The signs of sleep deprivation may become readily apparent, especially if you do not experience the stages of sleep completely.

Babies experience more REM than adults

REM, or rapid eye movement, is an important part of the sleep cycle. During this stage, your brain becomes active, as if you were awake. However, this is an integral part of a good night’s rest. Those who do not experience this stage feel the effects the next day.

Sleep stages can be organized into two main categories, "non-REM" and "REM" states. Four non-REM stages make up about three quarters of a night’s rest. Sleep becomes deeper and brain waves become progressively slower through the first four stages. The fifth stage presents a very different scenario.

The body experiences five stages of sleep. The REM cycle begins roughly 90 minutes after you fall asleep. During this stage, brainwaves are as active as they are in the waking state. The stage is best known for the rapid movement of the eyes in different directions, as evidenced by its name. One of the most intriguing aspects of this state is dreams.

Stage five emerges in different periods throughout the sleep cycle. The first segment of time has approximately ten-minute duration. Subsequent stage five periods gradually grow longer. The last rapid eye movement stage duration lasts about one hour.

Dreams occur during REM sleep, which explains the increased brain activity during this stage. Conversely, the voluntary muscle groups in the body are paralyzed. The stage is known as “paradoxical sleep” because of the combination of immobile muscles and heightened brain activity.

Theory suggests that the muscular paralysis prevents people from physically responding to their dreams, and the strong connection between the REM cycle and dreaming is a significant aspect of sleep research. Researchers who woke subjects during stage five of sleep found that they were able to remember what they dreamed. In addition, researchers have made many other fascinating discoveries over the years.

Rapid eye movement in sleep was discovered in 1953 and the phenomenon continues to intrigue researchers today. Before the discovery, sleep was believed to be a continuous and generally inert state. Studies unveiled the changes in the body while subjects were sleeping, alerting scientists to delve into the topic with greater depth.

Scientists have good reason for their interest in the REM cycle and sleep studies. The rapid eye movements serve as indicators of significant changes in the body during sleep, allowing researchers to make new and important discoveries. The discoveries lead to the development of treatments for sleep disorders.

The Sleep Society for Neuroscience offers insight into the scientific discoveries derived from REM studies as well as their implications. While sleep stages are quite different from waking states, the REM cycle is equally as active.

Findings include:

• REM brain activity starts in the brainstem and surrounding regions in the midbrain.
• The pons structure in the brainstem sends messages to the cerebral cortex and thalamus. This may lead to dreams.
• The pons sends messages, shutting off the motor neurons in the spinal cord. This leads to paralysis.
• Specific chemicals are released during sleep stages, offering insight into which prescription medications offer help for sleep disorders.
• Biomechanical insight into why people sleep presents itself through research.

Sleep research continues and there is much more information necessary in order to uncover the mysteries of this state. The REM cycle is a valuable tool for researcher to use in order to determine the reasons behind sleeping, dreaming and sleep disorders.

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