Dreaming is a images, ideas or emotions that we live in our dream. Although there are many theories that answer a question: Why do we dream?
or explain the function of dreams,
the scientists have not yet agrea on one theory. Some scientists believe that dreams is not important, and some believe that very important for mental and physical health
The Director of the Department of sleeping Diseases at Newton Wellesley Hospital in Boston City Ernst Hoffman suggests that "The potential function of Dreams is to insert new data into memory a also adaptive helps us cope with shocks and crises, although this is not installed"
https://cdn.pixabay.com/photo/2016/04/14/08/40/newborn-1328454_960_720.jpg
Let us now read the attempts of scientists...
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### 1. Psychoanalytic theory of dreams
<p><div class="pull-right">https://upload.wikimedia.org/wikipedia/commons/thumb/0/06/Die_Traumdeutung_%28Congress_scan%29.jpg/330px-Die_Traumdeutung_%28Congress_scan%29.jpg</div>
Freud claimed in 1900 that dreams are representative of the unconscious desires, ideas and motives.
If we cannot achieve some of our desires and express some of our thoughts in a conscious way, this desires will manifested in our dreams.
In his famous book ' Interpreting Dreams ', Freud has written that dreams are "a convincing gratification for repressed desires".
Freud divided the content of dreams into two: Explicit content, and Latent content. The explicit content is everything you see and live in your dreams from images, scenes and actual ideas, but its psychological meaning is the Latent content that the psychoanalyst interprets it.
Freud's thoughts on dreams have spread among the general public, but scientific research has failed to confirm this theory.
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### 2. Activation-Synthesis model of dreaming:
This theory was first proposed in 1977 by a researcher, psychiatrist Alan Hopkins and professor of psychiatry at Harvard University, Robert Maclarley. <p><div class="pull-right">https://upload.wikimedia.org/wikipedia/commons/2/2e/Gray739-emphasizing-hippocampus.png</div>
This theory is the most acceptable in the current scientific community
According to this theory, brain neural network are activated during a step of sleep that characterized a lot of electrical activity in the brain called ' Rapid Eye Movement ' or REM.
At this step, the **hippocampus** is activated which is a brain part that intervenes in the emotions, feelings and memories
The brain manufacture this activity and then tries to find meaning for these signals, and here produces the dream. <p><div class="pull-right">https://upload.wikimedia.org/wikipedia/commons/thumb/1/10/Blausen_0657_MultipolarNeuron.png/1024px-Blausen_0657_MultipolarNeuron.png</div>
Hence, the definition of a dream according to this theory as a random interpretation of neurotransmitters is performed by the brain during sleep
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### 3. Information โProcessing theories:
is one of the basic theories that answer a question: Why do we sleep?
It says that sleep allows us to process all the information we have received during vigilance.
Some dream experts believe that dreams are only secondary products of the process of processing this information.
Because we transact with a lot of information and memories a day, our brains create images, impressions and stories to control the activities that take place in our heads as we sleep.
### 4. Theory of exogenous influences
This theory suggests that dreams are the result of our brains trying to interpret externalities while sleeping.
Remember now that when you was a kid, how many times dreamed that you were swimming in a water pond and then woke up and found that you had peed in your bed!
### 5. Cleaning theory
This theory says that dreams are a process of cleaning up our brains and preparing them for the next day. Do you have CCleaner on your computer? Dreams perform a similar function.
Now you've known the most common theories that discuss the content of dreams, but I don't think you've got your answer for a question: Why do we dream?
To find out the answer, follow us.... To Part II
source images[1 from pixabay](https://cdn.pixabay.com/photo/2016/04/14/08/40/newborn-1328454_960_720.jpg),,,[2from wikipedia ](https://upload.wikimedia.org/wikipedia/commons/thumb/0/06/Die_Traumdeutung_%28Congress_scan%29.jpg),,,[3 from wikipedia](https://upload.wikimedia.org/wikipedia/commons/2/2e/Gray739-emphasizing-hippocampus.png),,,[4 from wikipedia ](https://upload.wikimedia.org/wikipedia/commons/thumb/1/10/Blausen_0657_MultipolarNeuron.png/1024px-Blausen_0657_MultipolarNeuron.png)
In order to learn more about dream... You can read the references
### References :
* https://openlibrary.org/works/OL1941331W/Drommenes_dimensioner
* http://phenomenologicalpsychology.com/2010/05/rem-sleep-and-dreaming-towards-a-theory-of-protoconsciousness-2/
* https://en.wikipedia.org/wiki/Hippocampus
* https://www.ncbi.nlm.nih.gov/pubmed/15766897
* https://icebreakerideas.com/learning-theories/#Information_Processing_Theory_G_Miller
* http://www2.ucsc.edu/dreams/Info/content_analysis.html
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