PSYB32H3 Chapter Notes - Chapter 4: Visual Acuity, Depth Perception, Subjective Constancy
Document Summary
Chapter 4 infancy: sensation, perception, and learning. They have reflexes: involuntary responses to external stimulation. They also have infant state: a recurring pattern of arousal. Ranges from alert, vigorous, wakeful activity, to quite regular sleep. Sleep: newborn sleeps 70% of the time, but by 8 weeks old, she sleeps more at night: rem sleep: rapid-eye-movement dream, lack of rem sleep leads to irritable and disorganized people. Infants sleep is 50% rem, adult is 20: anti-stimulatory theory: a theory that during rem sleep, the infant"s brain stimulates itself and that this, in turn, stimulates early development of cns. Crying: earliest means of communication: three patters of crying, basic: linked to hunger, gradual crying, angry: removal of toy like basic, pain: sudden crying, colic: a prolonged period of unexplained crying in an infant. There is a normal crying curve that regulates the amount of infant crying.
