Whether we are awake or asleep; our brain is always working. And absorbs information with the senses.
· When we are awake, primarily from the outside world in order to be able to adapt. As a result, the goals are changed and adjusted in one and, of course, at the same time the midpoints that carry them out. While awake, the midpoints sort out what does not fit the goals (including fantasies, illogicals, dreams). Because of this mechanism, it is no longer perceived by the senses.
· In sleep from the inner world, because this is precisely the task of the senses. During sleep, the goals are not active with their midpoints of interest (also because, as I said, they would disrupt recovery during sleep). Here the brain is not ruled by the midpoints.
The brain works similarly in dreams and in wakefulness. Except that in the latter, the midpoints are in charge, showing the whole direction.
And brain functions are restricted during sleep.
In both cases we experience the world - and it appears real to us.
Since the senses are always ready to receive, they send their information to the brain. With the exception of any strong external stimuli, they receive them from inside the person, especially from their dreams.
Here the brain shows us how, unregulated by the midpoint-mechanics of wakefulness, while among other things, restricting the frontal lobe and the striated muscles, it works in itself during sleep. That is why dreams are often so incomprehensible. They show us a limited world in terms of reality. And we experience this with the senses.
Since certain functions are disabled during sleep, issues can arise that are not perceived while awake. Here, goals can also play a role that are no longer excluded from midpoints because there is often no space for them.
It can show the most bizarre stories and images that we take as absolute reality - until we are again awake and cognitive everyday behaviour, including the frontal lobe function, has taken over again.
The key, why we experience the dream experiences as absolutely real, is the knowledge of how we perceive the world in general (i.e. also when we are awake).
The world we see then is not what it appears to us - i.e. real and solid, roughly the same from all human perspectives. But as our brain shows us.
Most people believe that the world in front of them is what they see it. This is not correct because the world is not a rigid something that all people see in exactly the same way. It can only be grasped from the perspective of the respective observer.
It is the same in sleep. Here the brain works differently, because e.g. the role of the frontal lobe is missing that is now off. This means that its logical accompaniment away. And through this we perceive what we experience in the dream as reality, so just as in wakefulness. Dreams are experiences of our senses.
We are used to living purposefully, to bring everything in an understandable direction. And so, the dream is interpreted accordingly. It is assumed to have an internal logic - which is certainly incorrect.
Dreaming while sleeping just tells us how the brain works without the goals of being awake. As a rule, it does not depict how we should act (because it only has limited functions). And it especially doesn't show us how a metaphysical, god, or supernatural wants to move us to do something.
One should keep in mind that the brain - like everything - consists of substances that operate according to laws.
Question: Why did it not occur to people in the past that dreams are exclusively produced by their brain?
Answer: Because they did not know how the brain works and that it is exclusively what shapes them. And remained in their belief in metaphysical activities because they could not imagine anything else.
It's always like this: If something is not clear to you, then interpretations, fantasies come into play. These fill in the “knowledge hole”. And so, people have often looked for the origin of their dreams in the outside world, for example given by God or other mystical instructions.
If you ask yourself what dreams are supposed to show us, the answer is: They tell us little useful. Because this is not their job.
But by thinking about your interpretation of dreams while awake, you could learn something about yourself - which goals and problems shape us.
· We sleep because it helps us relax.
· We dream because our senses always remain active (if only to be able to absorb dangers from the environment).
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