There is a very certain type of instability in cortical columns, which according to its distribution pattern, is called cortical noise. Theoretical studies have predicted that these quantum noises, in a certain level, may have surprising effects on boosting cortical transports and improve our process-ability for some complex problems, by the virtue of the process called stochastic resonance.
However, anything that interrupts brain tranquility will technically affect the randomness of the noises and localize the extent of their flow. Scientists name the root cause of this localization “synaptic depression”. Other suppressing factors such as impurities or defects in the lattice of neurons may cause coherent destructive interference and averages out to suppress the noise flow entirely and impair brain capability to handle certain condition.
These suppressing factors technically trap charge or halt the flow of energy in a specific region, according to Anderson localization, which eventually cause shortage of synthesizing protein and neurotransmitter substance.
The recent researches show that during the early stages of Sleep, certain areas of human brain such as visual cortex, still reacts to certain external interruption and localize a synaptic depression. In particular, people showed a remarkable level of dream shifting during the timed experiment.
Apart from subjects such as dream sharing or inception, creating such artificial distinction between sleep levels is truly remarkable.
