A Guide Through Sleep Stages For A Deep Sleep – REM, NREM – Meditation



Headphones are recommended but not required. Please take the time to properly set your volume to a low and comfortable level. The intention for this video was to provide an aid to help guide listeners through sleep stages with the goal of improving rest quality, and inducing a deep sleep.

Theta activity from 0:00 – 10:00
Theta to Delta transition from 10:00 – 20:00
Delta activity from 20:00-1:00:00

Neural entrainment is the theory that our brains have a tendency to synchronize themselves to external stimulation, which could include auditory, visual, tactile or electromagnetic stimuli. This video is composed of Theta and Delta waves.

The human brain contains approximately 80+ billion neurons which communicate with each other to form our thoughts, emotions and behavior. When our neurons communicate in mass, it produces a synchronized electrical pulse known as a brainwave. Our brainwaves can align with an external stimuli, and as a result we can stimulate our brains in ways that could positively effect our psychology and physiology.

Quality sleep is as essential to survival as food and water. Without sleep you can’t form or maintain the pathways in your brain that let you learn and create new memories, and it’s harder to concentrate and respond quickly.

Sleep is important to a number of brain functions, including how nerve cells (neurons) communicate with each other. Recent findings suggest that sleep plays a role that removes toxins in your brain that build up while you are awake.

Sleep affects almost every type of tissue and system in the body – from the brain, heart, and lungs to metabolism, immune function, mood, and disease resistance. Research shows that a chronic lack of sleep, or getting poor quality sleep, increases the risk of dis-orders including HBP, cardiovascular issues, diabetes, anxiety, and obesity.

Stage 1 – non-REM sleep is the changeover from wakefulness to sleep. During this short period (lasting several minutes) of relatively light sleep, your heartbeat, breathing, and eye movements slow, and your muscles relax with occasional twitches. Your brain waves begin to slow from their daytime wakefulness patterns.

Stage 2 – non-REM sleep is a period of light sleep before you enter deeper sleep. Your heartbeat and breathing slow, and muscles relax even further. Your body temperature drops and eye movements stop. Brain wave activity slows but is marked by brief bursts of electrical activity. You spend more of your repeated sleep cycles in stage 2 sleep than in other sleep stages.

Stage 3 – non-REM sleep is the period of deep sleep that you need to feel refreshed in the morning. It occurs in longer periods during the first half of the night. Your heartbeat and breathing slow to their lowest levels during sleep. Your muscles are relaxed and it may be difficult to awaken you. Brain waves become even slower.

During REM your eyes move rapidly from side to side behind closed eyelids. Mixed frequency brain wave activity becomes closer to that seen in wakefulness. Your breathing becomes faster and irregular, and your heart rate and blood pressure increase to near waking levels. Most of your dreaming occurs during REM sleep, although some can also occur in non-REM sleep. Your arm and leg muscles become temporarily paralyzed, which prevents you from acting out your dreams.

The hypothalamus contains groups of nerve cells that act as control centers affecting sleep and arousal. Within the hypothalamus is the suprachiasmatic nucleus (SCN) – clusters of thousands of cells that receive information about light exposure directly from the eyes and control your behavioral rhythm.

The brain stem, at the base of the brain, communicates with the hypothalamus to control the transitions between wake and sleep.

The thalamus acts as a relay for information from the senses to the cerebral cortex (the covering of the brain that interprets and processes information from short- to long-term memory). During most stages of sleep, the thalamus becomes quiet, letting you tune out the external world. But during REM sleep, the thalamus is active, sending the cortex images, sounds, and other sensations that fill our dreams.

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.

The basal forebrain, near the front and bottom of the brain, also promotes sleep and wakefulness, while part of the midbrain acts as an arousal system. Release of adenosine (a chemical by-product of cellular energy consumption) from cells in the basal forebrain and probably other regions supports your sleep drive.

The amygdala, an almond-shaped structure involved in processing emotions, becomes increasingly active during REM sleep.

Sleep information resource:
https://www.ninds.nih.gov/Disorders/Patient-Caregiver-Education/Understanding-Sleep

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