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'''a) Motor:''' These components are usually weak and poorly expressed movements during a dream.
'''a) Motor:''' These components are usually weak and poorly expressed movements during a dream.
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'''b) Vegetative:''' Phasic increases heart rate, blood pressure, respiration, pupillary diameter, and metabolic adjustments, which are expressed more consistently during a dream, as they are during attentive wakefulness.
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'''b) Vegetative:''' Phasic increases heart rate, blood pressure, respiration, pupillary diameter, and metabolic adjustments, which are expressed more consistently during a dream, as they are during attentive wakefulness.<ref>Cesar Timo-Iaria (in memorian); Angela Cristina do Valle, Physiology of dreaming,Sleep Science, Vol.2 Issue 2 / 2009 ,Available from: http://sleepscience.org.br/details/145/en-US/physiology-of-dreaming
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Institute of Medicine (US) Committee on Sleep Medicine and Research; Colten HR, Altevogt BM, editors. Sleep Disorders and Sleep Deprivation: An Unmet Public Health Problem. Washington (DC): National Academies Press (US); 2006. 2, Sleep Physiology. Available from: https://www.ncbi.nlm.nih.gov/books/NBK19956 </ref>
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