This section is about our dream. We always got the dreams without we ask and plan before to sleep. Nobody knows what exactly the meaning of dream. It is fade and when wake up the dream be blank or we forget it. Did you know what system use in bottom of brain for dreaming will work?
A 2001 study showed evidence that illogical locations, characters, and dream flow may help the brain strengthen the linking and consolidation of semantic memories. These conditions may occur because, during REM sleep, the flow of information between the hippocampus and neocortex is reduced. Increasing levels of the stress hormone cortisol late in sleep (often during REM sleep) cause this decreased communication. One stage of memory consolidation is the linking of distant but related memories. Payne and Nadal hypothesize these memories are then consolidated into a smooth narrative, similar to a process that happens when memories are created under stress.
Dreams for removing junk
Robert (1886), a physician from Hamburg, was the first who suggested that dreams are a need and that they have the function to erase
(a) sensory impressions which were not fully worked up and
(b) ideas which were not fully developed during the day.
By the dream work incomplete material will be either removed or deepened and included into memory. Robert's ideas were cited repeatedly by Freud in his Traumdeutung. Hughlings Jackson (1911) viewed that sleep serves to sweep away unnecessary memories and connections from the day. This was revised in 1983 by Crick and Mitchison's "reverse learning" theory, which states that dreams are like the cleaning-up operations of computers when they are off-line, removing parasitic nodes and other "junk" from the mind during sleep. However, the opposite view that dreaming has an information handling, memory-consolidating function (Hennevin and Leconte, 1971) is also common. Dreams are a result of the spontaneous firings of neural patterns while the brain is undergoing memory consolidation during sleep.
Dreams as resonance in neural circuits
During sleep the eyes are closed, so that the brain to some degree becomes isolated from the outside world. Moreover all signals from the senses (except olfaction) must pass through the thalamus before they reach the brain cortex, and during sleep thalamic activity is suppressed.his means that the brain mainly works with signals from itself. A well-known phenomenon in dynamical physical systems where the level of input and output from the system is low is that oscillation makes spontaneous resonance patterns to occur. Hence, dreams may be the simple consequence of neural oscillation.
Source from: Wikipedia.org
We can see what meaning of our dream at http://www.experienceproject.com/dream-dictionary/
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