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Echo Brain

Posted on December 23, 2009.
Echo BrainThe Evolution of the Brain

The human brain Evolued of the brain mammal, that had evolved brain reptilien. As evolved every pieces of the old brain remained, the put to bed simply were added to which was there before. Our vertebral rope evolved first creatures, fish of jawless and of the towards vertebrates, and we divide the oldest party of our previous brain with the lizards and the snakes. The brain reptilien is responsible to execute our basic physical functions, as to keep our hearts beating, it also is implied in the aggression and in the social hierarchy, the rite and the constraint. To surround this is the system of limbic, the brain found in the creatures that evolved after the reptiles, as the birds and the mammals.

The oldest parties of the brain of limbic are consecrated to feel, the taste, the sex and the basic emotions. The odor can be extremely edvocatrice and it is linked up to the party of our brain that creates the terror and the reverence, despair and love. If the parties of the states of failure of system of limbic of frantic fear can be induced, can be aimed in appearance to nothing of the all. The this is in this sector where altruism arrives, where we keep our memory and where our drugs of psychotropic between in force especially. The exterior layer of the cerebral hemisphere is called the nedocortex, this checks the things that we associate as is only human, our anticipation of the future and our capacity to walk on two legs for example.

The signals in the brain especially are sent by the networks of millions of cells of nerve called neurones. The neurones receive the branch stimulus known as dendrites and communicates then these information through a synapse, or electrically or chemically. To the electric synapses an impulse of nerve is emptied alongside an axon, this crosses a gap junction to connect to the dendrite of another neurone. To the chemical synapses electric impulses are transformed in chemical signals, this process is called exocytosis and is the than electric slower transmission.

It is thought that the different aspects of the brain evolved as separates mechanisms, every to reply to a new specific need. The memories are stored also separately and if in the old age, when less than blood flows to the just regions, the people can have trouble to convert memories between the current and in the long term. This is why the elderly people can forget what arrived yesterday but can relive what arrived 50 years ago, or inversely. The memories also are separated by the direction as they invoke, there is a part of the brain that reminds of the sounds and pictures but the thought steps and this why writes to something down below will help you the reminder more simply thinks about him. This resounds the Fact that the components of sensory perceptions also are separated in the brain and if a picture of a color in movement would consist in a component of "movement" and a component of "color", with the two simultaneously foreseen one on an only region of space in front of we.

The conscience that we have in the light breaks as we sleep and which we arrive when we dream always are one of the big mysteries of science. Sleep is one of our stronger desires, sometimes even stronger than the sex that is this than keeps our type in the existence. The people that are deprived sleep die quicker than these private one of food and dream are a vitally important party of sleep. If you prevented to dream the night will continue you to hallucinate during the day and the border between these two forms of conscience becomes strangely jumbled.

The humans are not the only creatures that dream, we know that the reptiles do not dream, but the birds and the mammals do, the predators are a lot more probable ones to dream than the prey and the water mammals dream less than the mammals of earth. Dream sleep is the types a lot deeper more than more other ones of sleep if it is suggested than the dreams developed to paralyze creatures when they would be otherwise in danger. This could explain why the children sleep more than the adults and the mammals dream while the reptiles do not do. The evolved mammals during the reign of the reptiles and the gigantic reptiles are cold blooded and awakened if during the day. The mammals were night and preyed on the reptiles and their eggs, that they did not protect, the night. When the reptiles began disappearing, and those that survived grew small, the mammals transferred to the light.

As let us dream us the the left hemisphere of our nedocortex, That is implied in the reading, speaking and rationality, can be occupied and itself unavailable to our conscience. This can allow the just side of our brain, to which is implied in the model recognition, 3 visions and the pictures to dimensions, to be noticed. The party reptilienne of our brain, that of ordinary one also is eliminated during the day, also can win the check. The world perceived by the brain reptilien is maybe similar to how we feel when we dream. Maybe the reptiles do not dream when they sleep because they live their life awakening in a state where they do not try the reality and cannot imagine no typical other of world but the one presented to them. In our dreams that we presented with the pictures and the sounds that we always do not understand, we find running ourselves things and looking for something else and nevertheless we do not know that. We are only conscious of the few last minutes behind ourselves and the after few forward.

In our dreams we can recognize sensory signs but we can read more hardly words. We can concentrate only on which is just in front of ourselves with little thought about the passed or future, we have strong emotional responses but the small capacity to reason. We have not a true direction of oneself and if we do this not to be active, there is a fatalism direction where we are powerless on what we do and which we arrive. We can feel two parties of ourselves in some dreams, that of the silent observer, probably the dreams compose, and that of our character in the dream. This 'the observer silk is said also sometimes to appear in the trips of LSD and in the other experiences with the conscience.

The fear that the children have when they sleep natural well being, the children did not evolve to sleep alone. The babies dream for a higher percentage of their sleep than their adults and as the night continues our dreams to back up more and more of in our passed and the emotional content of our increases of dreams. Maybe a first experienced embryo of conscience is unreal as their brain reptilien is the first one to form. To go of this type of reality in a where you can foresee all your life and are conscious every second of your existence must bewilder a little and takes to the question of which type of evolution of brain could furnish next.

Http: //www.thestargarden.co.uk/The evolution of the cerveau.html

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