CPChapter4-1

CPChapter4-1 - C hapter F our Infancy: Sensation,...

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4/7/11 Chapter Four Infancy: Sensation, Perception, and Learning
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4/7/11 The Newborn Newborns have well-developed reflexes and sensory responses for adapting to their environments Reflexes appear first Some major reflexes are permanent, whereas others disappear within a year Abnormalities in reflexes in first days
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4/7/11 Reflex Response Biceps Short contractions shown Eye Blink Blinks/closes eye in response Patellar Extends and kicks leg Withdrawal Pulls leg up, bends knee and hip Babinski Big toe up, other toes fan and curl Babkin Opens mouth, closes eyes, moves head Moro Arms and legs extended, then close to body Palmar grasp Grasps fingers and objects Plantar All toes curled as if grasping something Rooting Turns head, opens mouth, tries to suck Stepping Makes rhythmic stepping movements Sucking Sucks finger rhythmically Temporary reflexes Permanent
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4/7/11 The Newborn Infant states – recurring patterns of arousal ranging from alert to regular sleep Human behavior; organized and predictable Humans are active, not passive Most behaviors are regulated
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4/7/11 The Newborn Sleep Newborns sleep, on average, 70% of time in series of long and short naps Not all cultures organize sleep patterns like in the U.S., and sleeping arrangements vary across cultures Sleeping arrangements of parents and children reflect ideas about
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4/7/11 10 20 30 40 50 60 70 80 0 Active sleep 2-6 pm Fussy crying 10-2 am 6-10 am 2-6 pm 10-2 am 6-10 am Total sleep Percent of total recording time 8- week- olds 2- week- olds
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4/7/11 The Newborn REM sleep: rapid-eye-movement, fluctuating heart rate and blood pressure Don’t know if infants dream REM: self-stimulating, helps CNS development REM sleep declines to about 20% by age 18 and onward into
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This note was uploaded on 04/07/2011 for the course PSYC 2076 taught by Professor Staff during the Fall '10 term at LSU.

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CPChapter4-1 - C hapter F our Infancy: Sensation,...

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