FMLY 1010 Lecture 24: Lecture 24

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Family Social Sciences
FMLY 1010
Christine A.Schippers

o98729 Adaptive reflexes = reflexes, such as sucking, that help newborns survive o Some adaptive reflexes persist throughout life o E.g. rooting reflex when a newborns cheek is touched, he will turn his head to that side o E.g. sucking reflex automatically begin to suck an object that enters the mouth o Disappear in infancy or childhood Stimulation of certain reflexes may facilitate later development E.g. if an infant is encouraged to exercise the stepping reflex, he is more likely to spontaneously display stepping movements, and will begin walking at an earlier age Weakabsent adaptive reflexes suggests a neonates brain is not functioning properly Primitive reflexes = reflexes controlled by primitive parts of the brain (medulla, midbrain), that disappear during the first year of life Purpose of these reflexes are less clear o E.g. Morostartle reflex startle a baby, she will throw her arm out and arch her back o E.g. Babinski reflex stroke the bottom of foot, baby will splay out toes and then curl them o Disappear around 68 months old If reflexes persist, baby might have neurological problem Behavioural States 5 different states f sleep and wakefulness in neonates States of consciousness = different states of sleep and wakefulness in infants Most infants move through stages in same sequence Deep sleep, to lighter sleep, to alert wakefulness and fussing o After being fed, become drowsy and drop back into deep sleep Cycle repeats every 2 hours Neonates sleep 80 of the time (same amount during daytime as night time) By 8 weeks old, sleep amount drops, circadian rhythms become evident o Daynight sleep rhythms o Sleep through 2 or 3, 2hour cycles in sequence without fully becoming awake o Said to sleep through the night By 6 months, sleep a bit over 14 hoursday Sleep is more regular and predictable European parents tend to expect babies to develop normal sleeping patterns within the first 2 years, without parental intervention Infants have different cries for different needs Basic cry hunger has a rhythmical pattern: cry, silence, breath, cry, silence, breath (with a whistling sound) o Anger cry louder, more intense
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