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N400, P600, and Late Sustained Frontal Positivity Event-Related Brain Potentials Reflect Distinct Psycholinguistic Processes During the Comprehension of Contextually Ambiguous Narrative Discourses : = Implications for the Neural Organization of the Language Processing System.

紀錄類型:	書目-語言資料,手稿 : Monograph/item
正題名/作者:	N400, P600, and Late Sustained Frontal Positivity Event-Related Brain Potentials Reflect Distinct Psycholinguistic Processes During the Comprehension of Contextually Ambiguous Narrative Discourses :/
其他題名:	Implications for the Neural Organization of the Language Processing System.
作者:	Ledwidge, Patrick S.
面頁冊數:	1 online resource (192 pages)
附註:	Source: Dissertation Abstracts International, Volume: 78-12(E), Section: B.
Contained By:	Dissertation Abstracts International78-12B(E).
標題:	Psychology. -
電子資源:	click for full text (PQDT)
ISBN:	9780355103434

N400, P600, and Late Sustained Frontal Positivity Event-Related Brain Potentials Reflect Distinct Psycholinguistic Processes During the Comprehension of Contextually Ambiguous Narrative Discourses : = Implications for the Neural Organization of the Language Processing System.
Ledwidge, Patrick S.

N400, P600, and Late Sustained Frontal Positivity Event-Related Brain Potentials Reflect Distinct Psycholinguistic Processes During the Comprehension of Contextually Ambiguous Narrative Discourses :Implications for the Neural Organization of the Language Processing System. - 1 online resource (192 pages)

Source: Dissertation Abstracts International, Volume: 78-12(E), Section: B.

Thesis (Ph.D.)--The University of Nebraska - Lincoln, 2017.

Includes bibliographical references

Two studies were performed to investigate the temporal structure and organization of the language processing system during the comprehension of coherent contextually ambiguous narrative discourses. In Study 1, participants read short discourses that were contextually ambiguous if read without a descriptive title (Untitled group) or unambiguous with the title (Titled group). Participants identified the title of the discourses after reading 1-3 sentences. Given the unfinished next sentence, they performed a cloze procedure on the sentence-final word. For the Titled Group, cloze probability was greater to the last word of sentence 3 (Critical Word 3) than sentences 2 (Critical Word 2) and 1 (Critical Word 1). For the Untitled group, title identification accuracy was greater after reading the first two sentences than the first sentence and even more so after reading the full three-sentence discourses than the first two sentences alone. This study established 25 discourses in which the contexts were initially ambiguous but became increasingly clearer after reading Critical Word 2 and Critical Word 3.

Electronic reproduction.
Ann Arbor, Mich. :
ProQuest,
2018

Mode of access: World Wide Web

ISBN: 9780355103434Subjects--Topical Terms:

555998
Psychology.
Index Terms--Genre/Form:

554714
Electronic books.

N400, P600, and Late Sustained Frontal Positivity Event-Related Brain Potentials Reflect Distinct Psycholinguistic Processes During the Comprehension of Contextually Ambiguous Narrative Discourses : = Implications for the Neural Organization of the Language Processing System.
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500 $a Source: Dissertation Abstracts International, Volume: 78-12(E), Section: B.
500 $a Adviser: Dennis L. Molfese.
502 $a Thesis (Ph.D.)--The University of Nebraska - Lincoln, 2017.
504 $a Includes bibliographical references
520 $a Two studies were performed to investigate the temporal structure and organization of the language processing system during the comprehension of coherent contextually ambiguous narrative discourses. In Study 1, participants read short discourses that were contextually ambiguous if read without a descriptive title (Untitled group) or unambiguous with the title (Titled group). Participants identified the title of the discourses after reading 1-3 sentences. Given the unfinished next sentence, they performed a cloze procedure on the sentence-final word. For the Titled Group, cloze probability was greater to the last word of sentence 3 (Critical Word 3) than sentences 2 (Critical Word 2) and 1 (Critical Word 1). For the Untitled group, title identification accuracy was greater after reading the first two sentences than the first sentence and even more so after reading the full three-sentence discourses than the first two sentences alone. This study established 25 discourses in which the contexts were initially ambiguous but became increasingly clearer after reading Critical Word 2 and Critical Word 3.
520 $a In Study 2, a different sample of participants read the discourses with (Titled Discourse group) or without (Untitled Discourse group) a descriptive title while undergoing high-density event-related potential (ERP) recording. For the Untitled Discourse group, N400 amplitudes became less negative from Critical Word 1 to Critical Word 2 and again to Critical Word 3, suggesting greater ease of lexical-semantic retrieval as the discourses unfolded. For this group, P600 amplitudes were larger to Critical Word 3 than Critical Word 2. Unexpectedly, a Late Sustained Frontal Positivity (SFP) ERP component occurred to both Critical Word 2 and Critical Word 3 for the Untitled Discourse group only. SFP results corresponded to the title identification findings from Study 1. Thus, it is proposed that the SFP reflects the resolution or revision of contextual ambiguity during discourse comprehension. Alternatively, the P600 is proposed to reflect the updating of the existing context of a discourse when an context is available or after the resolution of contextual ambiguity.
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