Physiologists found that memory is a result of the close cooperation of the functional blocks of the brain, with the major role played by the unit of receiving, processing and storing information. Neurons of this unit are capable of the excitation traces retention and comparing them with the parameters of new information. Any information received is, for a short while, circulating in the closed neural circuits. The process of retention and saving the formation is the creation of the nerve connections between the new information and that, which has already been fixed. The process of reproduction is a restoration of these connections, and forgetting – their inhibition. Long-term preservation of information is controlled by the frontal lobes and when damaged the reproduction becomes uncontrolled.
The conclusion is a very important part of your essay. Although it is sometimes treated as a roundup of all of the bits that didn’t fit into the paper earlier, it deserves better treatment than that! It's the last thing the reader will see, so it tends to stick in the reader's memory. It's also a great place to remind the reader exactly why your topic is important. A conclusion is more than just "the last paragraph"—it's a working part of the paper. This is the place to push your reader to think about the consequences of your topic for the wider world or for the reader's own life!
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