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Right hemisphere variability during ...

Lincoln, Amy Ellen.

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Right hemisphere variability during language processing.

紀錄類型:	書目-語言資料,印刷品 : Monograph/item
正題名/作者:	Right hemisphere variability during language processing./
作者:	Lincoln, Amy Ellen.
面頁冊數:	97 p.
附註:	Adviser: Kathleen Baynes.
Contained By:	Dissertation Abstracts International68-04B.
標題:	Biology, Neuroscience. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3261176

Right hemisphere variability during language processing.
Lincoln, Amy Ellen.

Right hemisphere variability during language processing. - 97 p.

Adviser: Kathleen Baynes.

Thesis (Ph.D.)--University of California, Davis, 2007.

The contributions of the right hemisphere to language processing have become increasingly evident as more studies examine complex, high-level language processing. One essential feature of language comprehension is the retrieval of contextually relevant word meanings. Recent theories suggest that understanding the meaning of a word in a sentence involves the activation of contextually relevant perceptual information. This 'perceptual information', such as how objects look, feel or sound in specific contexts, is incorporated during language processing---giving rise to language comprehension. The scope of these studies is to examine how the two hemispheres contribute to the activation and maintenance of perceptual information during language comprehension. Both hemispheres contribute to the processing of sensory and perceptual experiences that, according to perceptual symbol theories, ground conceptual knowledge used in the service of comprehension. Research also demonstrates that the two hemispheres have different processing strengths. The left hemisphere (LH) is dominant for language processing, whereas the right hemisphere (RH) has strengths in visual perception and imagery. Thus, the two hemispheres may play different roles in the activation and integration of the perceptual information conveyed in sentences. Chapter 1 investigates the activation of perceptual information during sentence processing and shows these activations in the RH may vary subject to whether sentences represent perceptual information implicitly, requiring the making of an inference, or explicitly. In Chapter 2, these findings are replicated with a more extensive and better balanced stimulus set. In addition to the replication of the reaction time data, the accuracy data demonstrate that under some conditions the RH is sensitive to the consistency of sentence context and perceptual information whether the sentences represent perceptual information implicitly or explicitly. The final chapter indicates that when the RH is damaged, the match effect is lost; however, it does not establish whether this occurs because of a loss of efficient perceptual processing, failure to integrate perceptual and linguistic information, or some other task related factors. Taken together, these studies demonstrate that the RH does play a role in the coordination of sentential and perceptual information, but the specification of that role awaits further investigation.Subjects--Topical Terms:

1017680
Biology, Neuroscience.

Right hemisphere variability during language processing.
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