Infant Lecture 7

Infant Lecture 7 - Infant Lecture 7 February 7, 2007...

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Infant Lecture 7 February 7, 2007 Neonatal Reflexes: exist because they have survival value, may be a throw back to earlier days based on similarities to primates, if they are missing then that means something is wrong with nervous system, if they remain then that means something is wrong with nervous system also. - Grasping : Palmar [gone by 3-4 months] reflex because it stimulates by touching the palm. Fingers curl down but thumb sticks out. Baby will later learn to coordinate thumb – Pincer grasp replaces Palmar grasp [it becomes a purposeful reflex then- not a part of neonatal reflex- emerges around 5-6 month]] - Sucking : anything that touches lip or tongue area will initiate sucking reflex, once again survival value; saw this with swallowing so infant can take in nourishment orally rather than cord in placenta before - Rooting : infant is searching for nipple, will turn to direction of stimulation on cheeks - Stepping : hold baby up by abdomen and rib cage and feet touch a little bit, they will come up with stepping motion, goes away by 3-4 months, but in water it returns, goes away because of body weight they acquire in first few months, [ cephalocaudal- head to foot]; the torso is much larger along with head than legs,….[ Pronimodistal – center parts of body grow more rapidly than outside of body, so large torso than length of legs etc] - Moro : or startle reflex- occurs when babies position changes, if you change elevation rapidly then baby arches back and then it flings its arms and legs out, then it brings it back toward its body, you can also do this with a loud noise, lost by 6-7 months of age [also then crawls at 6-7 months, so voluntary capabilities no longer require some of these reflexes]
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Infant Lecture 7 - Infant Lecture 7 February 7, 2007...

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