PSYB32H3 Chapter Notes - Chapter 4: Sudden Infant Death Syndrome, Autonomic Nervous System, American Babies
Document Summary
September 17th, 2014: researchers are very interested in what a baby is able to do early in life and much of their work focuses on. Chapter 4: infancy: sensation, perception, and learning the sensory and perceptual world of infants. Infant states: have alternative patterns of sleep and wakefulness. Waking state they may be quiet, active, or distressed, as in fussing and crying. Sleep: newborns sleep about 70% of the time in a series of long and short naps during the day and night, 4 weeks old: Periods of sleep tend to be fewer but longer: 8 weeks old: Sleeping more during the night and less during the day. Infant becomes less fussy as they gain better control over their states of arousal: end of first year: Crying: three different patterns of crying, reflective of the infant"s varying needs have been identified, basic: linked to hunger, among other factors. Starts arrhythmically and at low intensity, gradually becoming louder and more rhythmic.
