PSYB32H3 Chapter Notes - Chapter 4: Fetus, Breastfeeding, Early Start
Document Summary
Chapter 4 infancy: sensation, perception, and learning. Infant states: recurring pattern of arousal in the newborn, ranging from alert, vigorous, wakeful activity, to quiet, regular sleep. Infant states indicate that from early in life, human behaviour is organized and predictable. Internal forces play a central role in infant states and their changes: sleep. Newborn, on average, sleeps about 70% of the time. As the child ages, periods of sleep tend to be fewer but longer, and then shift to more during the night. Infant becomes less fussy as she gains better control over her states of arousal. Sleeping patterns and arrangements differ across cultures (i. e. mayan mothers view the north american custom of separate beds for babies as tantamount to child neglect . Rapid-eye movement (rem) sleep often identified with dreaming because during dreams, eyes dart around in rapid, jerky movements under closed eyelids, also characterized by fluctuating heart rate and blood pressure.
