Dipesh Majumdar

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Sigmund Freud's theory of the human mind

According to Freud, the stimulus to mind and the response from it is a process which involves the memory in the unconscious level, unconscious, pre-conscious and finally the conscious mind.

An event  first takes place. This event is in the form of light, sound, feeling of touch - the sensory stimuli - that first enters the mind. The entry point is the memory which is in the unconscious realm. Content of this unconscious memory (the stimulus) is transmitted to the unconscious mind and then the pre-conscious mind. At each stage, as the information propagates, some amount is lost and some retained. From the pre-conscious mind, it finally enters the conscious mind (the normal mind which we are aware of). If it happens that the information is not a pleasant one, then the filters (or sensors) present in the subconscious and pre-conscious mind suppress the unpleasant information and brings forth to the conscious  that which is pleasant and acceptable. Thus mind creates a filtered version of the reality. This creates the perception which is unique to one person.

Now at night when we are dead asleep, these filters are sometimes bypassed and some of the undesirable information leaks into the conscious mind. The conscious mind might act on these undesirable leakage of information in the form of dreams (or nightmares).
We all have dreams and mostly we see those that we are afraid of, isn't it? The strong and unfulfilled desires (desires which filters of our mind have suppressed for a long time from fear of rejection or unpleasant reaction from friends and society) also vent out of the sleeping mind in similar way.

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