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Neurobiological Aspects of Language Development in Children - Essay Example

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Neurobiological Aspects of Language Development in Children

Understanding of physiology of language has been achieved through observing the effects of brain lesions on other peoples’ behavior and also through studies done using imaging techniques. Aphasia is the most common speech disorder which is caused by brain damage and is characterized by difficulties in speech production or understanding .Neurobiology of language development is a function of the left cerebral part of the brain (Neville and Bavelier).The left hemisphere consists of parts such as Broca’s area, Wernicke’s area and also angula gyrus. ...
Its damage and the surrounding regions of frontal lobe and the subcortical white matter leads to disrupted speaking ability and it causes a condition called aphasia , a disorder which is characterized by slow, laborious and non fluent speech .A person with this disorder has thoughts to express but the frontal lobe damage makes it difficult to articulate them. Such people find it difficult to say some words (function words) such as a, the, in, about and they find it easy to say word which convey information (content word) such as nouns, adjectives, adverbs and verbs. They also understand speech much better than they can produce it (Laura). Broca’s region has motor memories such as neurons of sequences of musculature movements that are essential to articulate words as talking involves rapid movement of tongue, jaws, and lips. Such movements should be coordinated with those of vocal cord for taking to occur (Laura).Broca’s asphasia is associated with disorder such as agrammatism even though this condition can occur on its own. Raleigh 3 Anomia is another speech disorder which is observed in Broca’s aphasia .It is characterized by word finding, articulation difficulties and mispronouncing of words. Generally all aphasic people either omit or use inappropriate words. Anomia is symptom in all aphasic conditions (Laura). Speech comprehension Comprehension of speech starts with auditory system which first detect and analyze sounds .A person my recognize sounds and fail to identify or understand its meaning as this involves additional information retrieval from the memory. Speech development is a function of Wernicke’s area of brain which is found at the junction of superior temporal lobes and parietal lobes (Naville and Bavelier). People with ...Show more

Summary

Raleigh1 Stephanie Raleigh 3rd Dec 2011. Neurobiological aspects of language development in children Language acquisition in infants’ life is a major developmental milestone. In most of children, language development occurs rapidly in an effortless task while in others it may fail to develop normally even in the absence of physical, emotional, social or general intellectual impairment .Such children are said to have specific language impairment (SLI) and they manifest varying levels of language understanding and production problems during activities such as speaking, reading and listening (Neville and Bavelier).Language impairment is characterized by deficits in vocabulary, grammatical , mo…
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