Mechanisms of discourse comprehension impairment after right hemisphere brain damage: suppression in lexical ambiguity resolution.
Normal comprehension skill is linked with the proficiency of a suppression mechanism, which functions to dampen mental activation that becomes irrelevant or inappropriate to a final interpretation. This study investigated suppression and discourse comprehension in adults with right brain damage (RBD...
| Published in: | Journal of Speech, Language & Hearing Research Vol. 43; no. 1; pp. 62 - 79 |
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| Main Authors: | , , |
| Format: | Article |
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American Speech-Language-Hearing Association
February 2000
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| Online Access: | View this record in EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ssf&AN=507689230&site=ehost-live header: @attributes: shortDbName: ssf uiTerm: 507689230 longDbName: Social Sciences Full Text (H.W. Wilson) uiTag: AN controlInfo: bkinfo: jinfo: jid: 10924388 1SM jtl: Journal of Speech, Language & Hearing Research issn: 10924388 maglogo: N pubinfo: dt: February 2000 vid: 43 iid: 1 pid: 42 pub: American Speech-Language-Hearing Association artinfo: ui: 507689230 ppf: 62 ppct: 17 formats: fmt: – @attributes: type: T – @attributes: type: P size: 1.8MB tig: atl: Mechanisms of discourse comprehension impairment after right hemisphere brain damage: suppression in lexical ambiguity resolution. aug: au: Tompkins, Connie A. Baumgaertner, Annette Lehman, Margaret T. su: Brain damage Brain function localization Comprehension English language Response inhibition sug: subj: Brain damage Brain function localization Comprehension English language Response inhibition ab: Normal comprehension skill is linked with the proficiency of a suppression mechanism, which functions to dampen mental activation that becomes irrelevant or inappropriate to a final interpretation. This study investigated suppression and discourse comprehension in adults with right brain damage (RBD). To index suppression function, 40 adults with RBD and 40 without brain damage listened to sentence stimuli that biased the meaning of a sentence-final lexical ambiguity (e.g., SPADE), then judged whether a probe word (e.g., CARDS) fit the overall sentence meaning. Probes represented the contextually inappropriate meanings of the ambiguities and were presented in two conditions: 175 ms and 1000 ms post-stimulus. The same probes were used with unambiguous comparison stimuli. Probe judgment response times indicated that only the group without brain damage suppressed inappropriate interpretations over time. In a multiple regression analysis, suppression function added significantly to predicting performance on a general measure of narrative discourse comprehension for participants with RBD. The discussion addresses how suppression deficits may account more broadly for comprehension difficulties after RBD; it also considers several unresolved issues concerning the suppression construct and the suppression deficit hypothesis. Reprinted by permission of the publisher. Reprinted by permission of the publisher. pubtype: Academic Journal doctype: Article src: R language: English refInfo: copyright: @attributes: flag: N holdings: @attributes: islocal: N |
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