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“Deep” language disorders in nonfluent progressive Aphasia: an evaluation of the “summation” account of semantic errors across language production tasks

Jeremy Tree Orcid Logo, Janice Kay, Timothy J Perfect

Cognitive Neuropsychology, Volume: 22, Issue: 6, Pages: 643 - 659

Swansea University Author: Jeremy Tree Orcid Logo

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DOI (Published version): 10.1080/02643290442000220

Abstract

This study focuses on the pattern of impairments seen in a new case KT, diagnosed with non- fluent progressive aphasia (NFPA), a degenerative disorder of language production. A systematic examination of KT’s performance on a wide range of language production tasks (i.e., repetition, reading, spellin...

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Published in: Cognitive Neuropsychology
Published: 2005
URI: https://cronfa.swan.ac.uk/Record/cronfa16872
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spelling 2014-01-10T16:40:43.9859259 v2 16872 2014-01-10 “Deep” language disorders in nonfluent progressive Aphasia: an evaluation of the “summation” account of semantic errors across language production tasks 373fd575114a743d502a979c6161b1ad 0000-0001-6000-8125 Jeremy Tree Jeremy Tree true false 2014-01-10 HPS This study focuses on the pattern of impairments seen in a new case KT, diagnosed with non- fluent progressive aphasia (NFPA), a degenerative disorder of language production. A systematic examination of KT’s performance on a wide range of language production tasks (i.e., repetition, reading, spelling, spoken and written naming) determined that both written naming and repetition were better preserved than reading, spelling-to-dictation, and spoken naming. Closer examination of error performance in both reading aloud and written production revealed evidence of “deep dyslexia” and “deep dysgraphia” that has not been documented in previous cases of NFPA, and as such the present case represents the first detailed case study of this pattern of impairment in the context of progressive aphasia. An evaluation and discussion of such deep language impair- ment disorders in the context of other cases of NFPA has been undertaken with reference to the summation hypothesis proposed by Hillis and Caramazza (1991, 1995). It is suggested that as a principle that holds across all language production tasks, this account can encompass patterns of deep disorders thus far reported in NFPA, although other theoretical hypotheses cannot be excluded. Journal Article Cognitive Neuropsychology 22 6 643 659 31 12 2005 2005-12-31 10.1080/02643290442000220 COLLEGE NANME Psychology COLLEGE CODE HPS Swansea University 2014-01-10T16:40:43.9859259 2014-01-10T16:40:43.9859259 Faculty of Medicine, Health and Life Sciences School of Psychology Jeremy Tree 0000-0001-6000-8125 1 Janice Kay 2 Timothy J Perfect 3
title “Deep” language disorders in nonfluent progressive Aphasia: an evaluation of the “summation” account of semantic errors across language production tasks
spellingShingle “Deep” language disorders in nonfluent progressive Aphasia: an evaluation of the “summation” account of semantic errors across language production tasks
Jeremy Tree
title_short “Deep” language disorders in nonfluent progressive Aphasia: an evaluation of the “summation” account of semantic errors across language production tasks
title_full “Deep” language disorders in nonfluent progressive Aphasia: an evaluation of the “summation” account of semantic errors across language production tasks
title_fullStr “Deep” language disorders in nonfluent progressive Aphasia: an evaluation of the “summation” account of semantic errors across language production tasks
title_full_unstemmed “Deep” language disorders in nonfluent progressive Aphasia: an evaluation of the “summation” account of semantic errors across language production tasks
title_sort “Deep” language disorders in nonfluent progressive Aphasia: an evaluation of the “summation” account of semantic errors across language production tasks
author_id_str_mv 373fd575114a743d502a979c6161b1ad
author_id_fullname_str_mv 373fd575114a743d502a979c6161b1ad_***_Jeremy Tree
author Jeremy Tree
author2 Jeremy Tree
Janice Kay
Timothy J Perfect
format Journal article
container_title Cognitive Neuropsychology
container_volume 22
container_issue 6
container_start_page 643
publishDate 2005
institution Swansea University
doi_str_mv 10.1080/02643290442000220
college_str Faculty of Medicine, Health and Life Sciences
hierarchytype
hierarchy_top_id facultyofmedicinehealthandlifesciences
hierarchy_top_title Faculty of Medicine, Health and Life Sciences
hierarchy_parent_id facultyofmedicinehealthandlifesciences
hierarchy_parent_title Faculty of Medicine, Health and Life Sciences
department_str School of Psychology{{{_:::_}}}Faculty of Medicine, Health and Life Sciences{{{_:::_}}}School of Psychology
document_store_str 0
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description This study focuses on the pattern of impairments seen in a new case KT, diagnosed with non- fluent progressive aphasia (NFPA), a degenerative disorder of language production. A systematic examination of KT’s performance on a wide range of language production tasks (i.e., repetition, reading, spelling, spoken and written naming) determined that both written naming and repetition were better preserved than reading, spelling-to-dictation, and spoken naming. Closer examination of error performance in both reading aloud and written production revealed evidence of “deep dyslexia” and “deep dysgraphia” that has not been documented in previous cases of NFPA, and as such the present case represents the first detailed case study of this pattern of impairment in the context of progressive aphasia. An evaluation and discussion of such deep language impair- ment disorders in the context of other cases of NFPA has been undertaken with reference to the summation hypothesis proposed by Hillis and Caramazza (1991, 1995). It is suggested that as a principle that holds across all language production tasks, this account can encompass patterns of deep disorders thus far reported in NFPA, although other theoretical hypotheses cannot be excluded.
published_date 2005-12-31T03:19:22Z
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score 11.037144

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