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Having experienced this, here is the outcome : When having back to back Lucid dreams, one begins to create a new world in which, you begin to have real problems when dreaming or when awake, and essentially comes to make a choice as to which one YOU would like to live in, or to determine which is the real world. This occurs when one has evolved to the point ...


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You're describing Hypnagogia. There has been some research on the EEG states during hypnagogia: To identify more precisely the nature of the EEG state which accompanies imagery in the transition from wakefulness to sleep, Hori et al. proposed a scheme of 9 EEG stages defined by varying proportions of alpha (stages 1–3), suppressed waves of less than ...


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In general, I don't think the answers to these questions are known. This paper is a good review of unihemispheric slow-wave sleep (USWS); the section on neurophysiological mechanisms is largely speculation based on how slow-wave sleep is generally thought to function--despite its lack of answers, that section is good reading anyhow, since it covers current ...


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Here is the first study with fMRI, EEG and eye-video simultaneously recorded while subjects were performing a task (Poudel et al., 2014). "fMRI analysis revealed a transient decrease in thalamic, posterior cingulate, and occipital cortex activity and an increase in frontal, posterior parietal, and parahippocampal activity during microsleeps. The transient ...



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