Look for thousands of baidu.
Looking back,
syllable! The dream woke up, and the happiness was gone.
Do you think we always wake up when we're about to achieve our goals when we're dreaming?
In a dream, you are either looking for food, or on the way to find food, as if dreaming just to see it;
The highlight moments in dreams always wake up inexplicably when they are not completed...
Why do dreams always want to deliberately "embarrass" us?
Dream: Tease you!
In fact, not just when the goal is about to be achieved. When we dream about some horror plot, we also "bounce" out of bed. This all boils down to one reason – dreams wake up when they are most excited.
People must complete a certain amount of sleep activities every day, and before completing the "indicator", your brain system will tell you strongly: "Sleep for me!" ”
But after reaching a particular state (that is, the moment of excitement in our dreams), the brain receives the command to "have to wake up", and we return to a state of wakefulness.
Why do I always wake up when I'm excited?
1. Perspectives on cognitive neurology and physiology[1]
When you dream of a gourmet meal, you will feel happy;
When you dream of one, you feel scared;
When you have something to achieve in your dreams, you will feel proud...
These emotions are the right amount of a finishing touch to a dream, and once the emotion reaches a tipping point, it may be a snake –it may make you wake up early!
We all know that the human body can feel different emotions because certain parts of our body can release certain substances, which are neurotransmitters, in which they play the role of "messengers", responsible for transmitting information between neurons.
Just as there are two sides of a coin, there are two types of neurotransmitters.
One is excitatory
One is inhibitory
The action of these neurotransmitters in our brains causes changes in our mood, and in sleep, it is related to our sleep and wakefulness.
We can use seesaw to understand:
Excitatory neurotransmitters are good for wakefulness, while inhibitory neurotransmitters are good for sleep (mainly by inhibiting excitatory neurotransmitters), so we think that inhibitory neurotransmitters are stronger during sleep.
We use the term "weight" as a metaphor for the active state of both, and when one party weighs more than the other, we can assume that they have the upper hand.
For example, when we dream of food, there is usually a long period of preparation, and the inhibitory neurotransmitter is significantly more "heavy". But because the purpose of our dreams is good food, it will produce a similar reaction to "looking at plums to quench thirst", producing pleasant and happy emotions, at which time our bodies will secrete excitatory neurotransmitters unconsciously, so that the seesaw will slowly tilt to the awake side (at this time, the inhibition is still more "heavy").
After discovering the delicacy in the dream, it is clear that it is in front of us, we just look at it and do not eat it, but suddenly wake up. This stage is reflected on the seesaw, that is, gradually reaching equilibrium and leaning toward the awake side, the excitatory transmitter is defeated into victory, and finally reaches the critical point, causing excitement in the brain.
Brain: Oh, who, don't eat, wake up!
2. Perspectives on psychoanalytic psychology[2]
Freud mentioned in The Analysis of Dreams that human consciousness can be seen as a system of understanding spiritual properties, which, as the name suggests, can receive happy and painful emotions.
People have consciousness, pre-consciousness, and subconscious. Their relationship can be understood as an iceberg.
Dreams are the fulfillment of subconscious wishes. This desire can reach consciousness through pre-realization.
Dreams first move from the subconscious to the pre-consciousness, but when they enter the consciousness, they encounter the censorship mechanism of the dream. This mechanism will screen out the thoughts that are usually contrary to social morality or dare not think in normal life, and after a certain packaging, they will become acceptable to you and present them in your dreams.
In the process of this examination, the dream is noticed by the consciousness, and we are able to see the dream as if it were a normal thing.
After that, the task of the pre-consciousness shifts to triggering the excitement of the brain, and the dream has the function of awakening. During sleep, dreams have been trying to bring the human body close to the level of arousal, and once exposed to stimuli that affect sleep, dreams will awaken us individually due to the protective mechanism of the brain.
From the above, it can be seen that dreams can gradually obtain enough mental intensity through the review mechanism to attract the attention of consciousness, so that no matter how long and deep the sleep time is, "snap" and you wake up!
When the intensity is not enough to attract the attention of the consciousness, the dream has been constantly trying to "work" until the eve of awakening, with the active attention of the attention.
That's why we remember that dreams are always foreshadowing (really just working ∠( "∠)_)
*The above is Freud's point of view, the author replaces it with a more acceptable concept, many of which are Freud's hypotheses, although consistent with the facts, but lack basis, for reference only.
In summary, we can find a key "middleman" - emotions. Emotions are the result of the action of neurotransmitters and can at the same time attract the attention of the conscious mind.
In other words, you wake up when you're excited because you're so excited!
The "key" of lucidity – the excitatory neurotransmitter
The following describes several excitatory neurotransmitters that play a major role in sleep: the monosergic system, the cholinergic system, and appetite peptides.
1. Monoamine system[3]
"Monoamine system" refers to a system dominated by neurons that secrete "monoamines" (monominergic neurons).
Monoamine is a general term for chemicals in the form of carboxyl groups isolated from amino acids as the basic form, including norepinephrine, serotonin, histamine, dopamine and the like.
(Dopamine should be very familiar with it, food and sweet love, think of happy moments will be secreted, oh no, is dreaming up)
Monoamines play a major role as neurotransmitters in the brain. The monoamine system activates a specific part of the brain area, enhancing the person's consciousness and waking up from a dream.
2. Cholinergic system[4]
When the human brain is awake, the functions of all parts are unified, and pyramidal cells (large neurons that transmit information from the cerebral cortex) are frequently discharged at irregular points in time. The deeper the sleep, the more consistent the discharge frequency.
From the perspective of the activity of the cerebral cortex, it can be considered that wakefulness is that the various regions of the brain are in a state of irregular activity in order to process various information. The monosalminergic system and the cholinergic system inhibit the lateral connections of the pyramidal cells in the cerebral cortex and allow them to function to the fullest.
At the same time, sobriety is a state triggered by the combination of the monoaminergic system and the cholinergic system that causes extensive stimulation of the cerebral cortex.
Scientists have done experiments that electric shock cats in the central brainstem of the "brain stem mesh system" (the crisscrossed part of the brainstem, where neurons are widely distributed) will cause the cat to wake up, if the cat is destroyed after the brainstem reticular system is shocked, the cat can not wake up.
According to this phenomenon, some people have proposed the "ascending reticular activation system theory", that is, the brainstem reticular system can send information to the brain and stimulate brain wakefulness.
3. Appetite peptides[5]
"Peptides" are constructs of multiple amino acid connections, and appetite peptides are "neuropeptides" (neuropeptides are peptides that act as neurotransmitters and are responsible for information transmission between cells).
After staining the axons of neurons that release appetite peptides, the scientists found that the axons of this neuron extend to various parts of the brain. In addition, active orthoprotein receptors were found in places where norepinephrine, serotonin, histamine, etc. were released, which were monominergic neurons, and after observation, it was found that appetite peptides can act on these neurons, making them more capable.
Second, appetite peptides enhance the function of the sympathetic nervous system, which controls various physiological processes such as vascular tone, cardiac output, glandular secretion, and heat generation.
Instantaneous emotions such as fear, joy, etc., can stimulate appetite peptide neurons to excite them through the amygdala (related to the feelings of the human brain, and the dream contains various emotions such as "fear" and "happiness" because of the role of the amygdala), which in turn leads to the enhancement of the excitability of the sympathetic nervous system, causing a series of changes that promote the awakening of the human body, such as increased heart rate.
Do you always wake up when you're excited?
The answer is clearly no.
Many people are dreaming of feasting, becoming heroes to save humanity, or running around the world after unknown creatures.
So why is there such a difference?
Just like the attitude towards horror movies, some people are dishes and love to watch, but some people feel that it is very cool to watch, and there is no unnecessary fear complex.
In the same way, dreams stimulate the same thing, and different people react differently to the same things.
Also, waking up at night is not necessarily because of excitement, some people choose to diet at night, and may also have a dream of finding good food, but eventually wake up from hunger.
epilogue
Seeing this, I believe that everyone has a general understanding of the mechanism of waking up from dreams. Waking up from a dream when excited is nothing more than a chemical.
At the same time, according to the psychoanalytic point of view, the happy emotions in the dream come from the suppression of their own desires in reality, and the painful emotions in the dream come from the anxiety in reality, so I hope that everyone can have a healthy and happy life, sleep accompanies 1/3 of our lives, and may you get your own comfort from sleep!
bibliography
Takeshi Sakurai. (2015). The Science of Sleep: The Mechanism and Mystery of Life Falling Asleep and Awakening (Gan Jingjing, Trans.; First edition). People's Post and Telecommunications Publishing House.
Freud. (2008). The Interpretation of Dreams (Hu Huijun, Zhou Yanhong, Trans.; First edition). Shanghai Sanlian Bookstore.
[3] Gaus, S. E. (2002). Ventrolateral Preoptic Nucleus Contains Sleep-Active, Galaninergic Neurons in Multiple Mammalian Species. Neuroscience, 115(1), 94–225.
[4] Borbely, A. A. (1982). A Two Process Model of Sleep Regulation. Hum Neurobiol, 1(3), 195–204.
[5] Sakurai, T. (2007). The Neural Circuit of Orexin (Hypocretin):Maintaining Sleep and Wakefulness. Nat Rev Neurosci, 8(3), 81–171.
Author | Yuku Takeshita
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