Models of attention and dual-task performance as explanatory constructs in aphasia.
Aphasia has traditionally been viewed as a loss or impairment of language. However, evidence is presented suggesting that language mechanisms are fundamentally preserved and that aphasic language behaviors are instead due to impairments of cognitive processes supporting their construction. These pro...
| Publicado en: | Seminars in Speech & Language Vol. 29; no. 3; pp. 169 - 188 |
|---|---|
| Autores principales: | , |
| Formato: | tables/charts Journal Article |
| Publicado: |
Thieme Medical Publishing Inc.
Aug2008
|
| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ccm&AN=105707179&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 105707179 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 07340478 GQN jtl: Seminars in Speech & Language issn: 07340478 maglogo: N pubinfo: dt: Aug2008 vid: 29 iid: 3 pid: 2811 pub: Thieme Medical Publishing Inc. place: New York, New York artinfo: ui: 105707179 2010016096 10.1055/s-0028-1082882 NLM18720315 105707179 ppf: 169 ppct: 19 formats: tig: atl: Models of attention and dual-task performance as explanatory constructs in aphasia. aug: au: Hula WD McNeil MR affil: Geriatric Research Education and Clinical Center, VA Pittsburgh Healthcare System, Pittsburgh, Pennsylvania sug: subj: Aphasia Physiopathology Attention Cognition Language Processing Models, Theoretical Task Performance and Analysis Brain Physiopathology Conceptual Framework Funding Source Memory, Short Term Psycholinguistics Reaction Time ab: Aphasia has traditionally been viewed as a loss or impairment of language. However, evidence is presented suggesting that language mechanisms are fundamentally preserved and that aphasic language behaviors are instead due to impairments of cognitive processes supporting their construction. These processes may be understood as a linguistically specialized attentional system that is vulnerable to competition from other processing domains. We present two models of attention that focus on competition for central processing and discuss findings from dual-task studies of normal and aphasic performance. First, competing language and nonlanguage tasks appear to share limited-capacity, parallel processing resources. Second, aphasic individuals demonstrate slowed central processing that could be due to a reduction in processing capacity or ability to allocate that capacity. Third, the attention models discussed bear a coherent relationship to current models of language processing. Clinical implications of a cognitive processing account of aphasia are also considered. pubtype: Academic Journal doctype: tables/charts Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
|---|