| Concerns about umbilical cord clamping |
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| Home -------- Site Map Apgar Oxygen an urgent ongoing need Transition fetal to postnatal circulation Tradition Protocols Outcomes >>Concerns (NCS p8) Question Authority References Links Notes Contact: Eileen Nicole Simon eileen4brainresearch@yahoo.com |
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| Topics |
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| Language development |
Evidence versus opinion |
Increased prevalence of childhood disorders |
Dependency and need for lifelong care |
Factors in need of closer examination |
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| The midbrain auditory nucleus, the inferior colliculus, sustained the most severe damage in monkeys subjected to suffocation with umbilical cord clamping. The monkeys were not deaf, but they did not orient to sounds the way normal monkeys do [67, 69] |
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| The ability to learn language "by ear" as most children do should be investigated as the possible result of such damage to the auditory system at birth. The most serious aspect of pervasive developmental disorders (or autism spectrum disorders) is the language disorder. So much more hope can be held out for the child who learns to speak; the child is then regarded as "high functioning." But a pedantic, stilted, parrot-like manner of speaking often remains as a life-long handicap; these are children who will never become quite the person they would have been. |
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| 7. Language development |
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| The well-recognized ability of normal young children to learn a second language without a foreign accent provides evidence of the importance of the auditory system for language learning. The brainstem auditory pathway is myelinated and functional by 29 weeks of gestation [72, 73], whereas myelination of the temporal and frontal lobe language circuits continues during the first decade of life [73]. Thus, learning to speak begins before the temporal and frontal language areas of the cortex are complete. |
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| Learning to speak requires "hearing" the boundaries between words and syllables [74]. The healthy human auditory system is then able to disassemble rapid streams of speech into elemental sound components. The rules of syntax are learned with maturation of the cortical language areas, which appear to develop as targets of trophic growth factors produced within nuclei of the brainstem auditory pathway [75, 76]. Ischemic damage of brainstem auditory nuclei at birth would then prevent normal development of the |
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| Posted: February 27, 2006 (a work in progress) |
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| language areas during later childhood. |
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| <<< NCS 8 >>> |
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| References: |
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