REM sleep (REM)
The EEG amplitude is reduced similarly to the awakening, the new cortex exhibits a low voltage, and the hippocampus exhibits a regular high voltage θ wave;
Slow muscle tone;
Genital erection, expansion changes;
The body temperature regulation disappears and the body temperature fluctuates with the ambient temperature;
The lateral geniculate PGO wave maps to the thalamic nucleus and the neocortex (ponto – geniculo - occipital PGO);
Irregular heart rate (irregular activity is not controlled by a single pacemaker);
Produce peripheral or middle ear muscle twitching signals that may precede or be secondary to PGO and rapid eye movement;
Clear and vivid "dreams."
REM generation mechanism
★ disconnect research
The pons is a key part of REM sleep and is the result of dynamic interaction between the forebrain and brainstem mechanisms. Deletion of muscle tone requires activation of the motor inhibition system in the spinal cord;
★ Damage research
Deletion of the under-blue nucleus
★Stimulation research
Cholinergic agonists stimulate the strongest form of REM sleep (injected into specific parts of the ventral blue plaque of the pons
★ neuron activity
REM-distribution cells (REM-priming): the neurotransmitters that release the cell population are gamma-aminobutyric acid, acetylcholine, glutamic acid or glycine;
REM-quiet cells (REM-off): the neurotransmitters that release the cell population are norepinephrine, adrenaline, serotonin and histamine;
Muscle tension control
During REM sleep, inhibition of motor output is accompanied by inhibition of sensory transmission, and both have similar neurological mechanisms.
REM sleep function
Evolutionary perspective:
Arousal from REM sleep is more alert than NREM, and the inactivation state of NREM leads to slower metabolic processes and lower response.
REM rebound phenomenon:
During REM sleep, histamine, norepinephrine, and serotonin neurons are terminated, and this termination does not occur in the awake state, so waking is not a substitute for REM sleep function.
Rebound may be the accumulation of demand for monoaminergic cell population passivation. When the release is reduced, the synthesis of monoamines and receptors is accelerated, and agonists are not required, and the receptors of these substances can be desensitized. But this hypothesis is not fully supported.
Women slippers are very unique and sex if ladies wear them. with such shoes, you will be are attractive and cool. Ladies who wear such shoes seems very beautiful and special. With the top priority good quality and remorseless serivce, we are receiving more and more active feedback from our customers.Looking for ideal of Shoes Manufacturer & supplier ? We have a wide selection at goods prices to help you get creative. All the Shoes are quality guaranteed. We are China Origin Factory of Women Shoes. If you have any question, please feel free to contact us.
Women Slipper,Easy To Wear Slipper,Open-Toed Slipper,Flat Bottom Slipper
Ningbo Qizhan Trade Co.,Ltd , https://www.qizhanshoes.com