Clustering and switching on verbal fluency: the effects of focal frontal- and temporal-lobe lesions
Identifieur interne : 001473 ( Istex/Checkpoint ); précédent : 001472; suivant : 001474Clustering and switching on verbal fluency: the effects of focal frontal- and temporal-lobe lesions
Auteurs : Angela K. Troyer [Canada] ; Morris Moscovitch [Canada] ; Gordon Winocur [Canada] ; Michael P. Alexander [Canada] ; Don Stuss [Canada]Source :
- Neuropsychologia [ 0028-3932 ] ; 1998.
Abstract
We examined the hypothesis that, on verbal fluency, clustering (i.e. generating words within subcategories) is related to temporal-lobe functioning, whereas switching (i.e. shifting between subcategories) is related to frontal-lobe functioning. Tests of phonemic and semantic fluency were administered to 53 patients with focal frontal-lobe lesions (FL), 23 patients with unilateral temporal-lobe lesions (TL) and 55 matched controls. Performance by FL patients was consistent with our hypothesis: in comparison to controls, patients with left-dorsolateral or superior-medial frontal lesions switched less frequently and produced normal cluster sizes on both phonemic and semantic fluency. Performance by TL patients was not consistent across fluency tasks and provided partial support for our hypothesis. On phonemic fluency, TL patients were unimpaired on both switching and clustering. On semantic fluency, TL patients were impaired on switching in comparison to controls and left TL patients produced smaller clusters than right TL patients. The best indices for discriminating the patient groups, therefore, were phonemic-fluency switching (impaired only with frontal lesions) and semantic-fluency clustering (impaired only with temporal-lobe lesions).
Url:
DOI: 10.1016/S0028-3932(97)00152-8
Affiliations:
Links toward previous steps (curation, corpus...)
Links to Exploration step
ISTEX:A2A44F41E24E151D0897395BE37F552BE9EEFDC2Le document en format XML
<record><TEI wicri:istexFullTextTei="biblStruct"><teiHeader><fileDesc><titleStmt><title>Clustering and switching on verbal fluency: the effects of focal frontal- and temporal-lobe lesions</title><author><name sortKey="Troyer, Angela K" sort="Troyer, Angela K" uniqKey="Troyer A" first="Angela K" last="Troyer">Angela K. Troyer</name></author><author><name sortKey="Moscovitch, Morris" sort="Moscovitch, Morris" uniqKey="Moscovitch M" first="Morris" last="Moscovitch">Morris Moscovitch</name></author><author><name sortKey="Winocur, Gordon" sort="Winocur, Gordon" uniqKey="Winocur G" first="Gordon" last="Winocur">Gordon Winocur</name></author><author><name sortKey="Alexander, Michael P" sort="Alexander, Michael P" uniqKey="Alexander M" first="Michael P" last="Alexander">Michael P. Alexander</name></author><author><name sortKey="Stuss, Don" sort="Stuss, Don" uniqKey="Stuss D" first="Don" last="Stuss">Don Stuss</name></author></titleStmt><publicationStmt><idno type="wicri:source">ISTEX</idno><idno type="RBID">ISTEX:A2A44F41E24E151D0897395BE37F552BE9EEFDC2</idno><date when="1998" year="1998">1998</date><idno type="doi">10.1016/S0028-3932(97)00152-8</idno><idno type="url">https://api-v5.istex.fr/document/A2A44F41E24E151D0897395BE37F552BE9EEFDC2/fulltext/pdf</idno><idno type="wicri:Area/Istex/Corpus">000C88</idno><idno type="wicri:explorRef" wicri:stream="Istex" wicri:step="Corpus" wicri:corpus="ISTEX">000C88</idno><idno type="wicri:Area/Istex/Curation">000C88</idno><idno type="wicri:Area/Istex/Checkpoint">001473</idno><idno type="wicri:explorRef" wicri:stream="Istex" wicri:step="Checkpoint">001473</idno></publicationStmt><sourceDesc><biblStruct><analytic><title level="a">Clustering and switching on verbal fluency: the effects of focal frontal- and temporal-lobe lesions</title><author><name sortKey="Troyer, Angela K" sort="Troyer, Angela K" uniqKey="Troyer A" first="Angela K" last="Troyer">Angela K. Troyer</name><affiliation wicri:level="4"><country xml:lang="fr">Canada</country><wicri:regionArea>Rotman Research Institute of Baycrest Geriatric Centre; University of Toronto, Ontario</wicri:regionArea><orgName type="university">Université de Toronto</orgName><placeName><settlement type="city">Toronto</settlement><region type="state">Ontario</region></placeName></affiliation></author><author><name sortKey="Moscovitch, Morris" sort="Moscovitch, Morris" uniqKey="Moscovitch M" first="Morris" last="Moscovitch">Morris Moscovitch</name><affiliation wicri:level="4"><country xml:lang="fr">Canada</country><wicri:regionArea>Rotman Research Institute of Baycrest Geriatric Centre; University of Toronto, Ontario</wicri:regionArea><orgName type="university">Université de Toronto</orgName><placeName><settlement type="city">Toronto</settlement><region type="state">Ontario</region></placeName></affiliation></author><author><name sortKey="Winocur, Gordon" sort="Winocur, Gordon" uniqKey="Winocur G" first="Gordon" last="Winocur">Gordon Winocur</name><affiliation wicri:level="4"><country xml:lang="fr">Canada</country><wicri:regionArea>Rotman Research Institute of Baycrest Geriatric Centre; University of Toronto, Ontario</wicri:regionArea><orgName type="university">Université de Toronto</orgName><placeName><settlement type="city">Toronto</settlement><region type="state">Ontario</region></placeName></affiliation></author><author><name sortKey="Alexander, Michael P" sort="Alexander, Michael P" uniqKey="Alexander M" first="Michael P" last="Alexander">Michael P. Alexander</name><affiliation wicri:level="4"><country xml:lang="fr">Canada</country><wicri:regionArea>Rotman Research Institute of Baycrest Geriatric Centre; University of Toronto, Ontario</wicri:regionArea><orgName type="university">Université de Toronto</orgName><placeName><settlement type="city">Toronto</settlement><region type="state">Ontario</region></placeName></affiliation></author><author><name sortKey="Stuss, Don" sort="Stuss, Don" uniqKey="Stuss D" first="Don" last="Stuss">Don Stuss</name><affiliation wicri:level="4"><country xml:lang="fr">Canada</country><wicri:regionArea>Rotman Research Institute of Baycrest Geriatric Centre; University of Toronto, Ontario</wicri:regionArea><orgName type="university">Université de Toronto</orgName><placeName><settlement type="city">Toronto</settlement><region type="state">Ontario</region></placeName></affiliation></author></analytic><monogr></monogr><series><title level="j">Neuropsychologia</title><title level="j" type="abbrev">NSY</title><idno type="ISSN">0028-3932</idno><imprint><publisher>ELSEVIER</publisher><date type="published" when="1998">1998</date><biblScope unit="volume">36</biblScope><biblScope unit="issue">6</biblScope><biblScope unit="page" from="499">499</biblScope><biblScope unit="page" to="504">504</biblScope></imprint><idno type="ISSN">0028-3932</idno></series></biblStruct></sourceDesc><seriesStmt><idno type="ISSN">0028-3932</idno></seriesStmt></fileDesc><profileDesc><textClass></textClass><langUsage><language ident="en">en</language></langUsage></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">We examined the hypothesis that, on verbal fluency, clustering (i.e. generating words within subcategories) is related to temporal-lobe functioning, whereas switching (i.e. shifting between subcategories) is related to frontal-lobe functioning. Tests of phonemic and semantic fluency were administered to 53 patients with focal frontal-lobe lesions (FL), 23 patients with unilateral temporal-lobe lesions (TL) and 55 matched controls. Performance by FL patients was consistent with our hypothesis: in comparison to controls, patients with left-dorsolateral or superior-medial frontal lesions switched less frequently and produced normal cluster sizes on both phonemic and semantic fluency. Performance by TL patients was not consistent across fluency tasks and provided partial support for our hypothesis. On phonemic fluency, TL patients were unimpaired on both switching and clustering. On semantic fluency, TL patients were impaired on switching in comparison to controls and left TL patients produced smaller clusters than right TL patients. The best indices for discriminating the patient groups, therefore, were phonemic-fluency switching (impaired only with frontal lesions) and semantic-fluency clustering (impaired only with temporal-lobe lesions).</div></front></TEI><affiliations><list><country><li>Canada</li></country><region><li>Ontario</li></region><settlement><li>Toronto</li></settlement><orgName><li>Université de Toronto</li></orgName></list><tree><country name="Canada"><region name="Ontario"><name sortKey="Troyer, Angela K" sort="Troyer, Angela K" uniqKey="Troyer A" first="Angela K" last="Troyer">Angela K. Troyer</name></region><name sortKey="Alexander, Michael P" sort="Alexander, Michael P" uniqKey="Alexander M" first="Michael P" last="Alexander">Michael P. Alexander</name><name sortKey="Moscovitch, Morris" sort="Moscovitch, Morris" uniqKey="Moscovitch M" first="Morris" last="Moscovitch">Morris Moscovitch</name><name sortKey="Stuss, Don" sort="Stuss, Don" uniqKey="Stuss D" first="Don" last="Stuss">Don Stuss</name><name sortKey="Winocur, Gordon" sort="Winocur, Gordon" uniqKey="Winocur G" first="Gordon" last="Winocur">Gordon Winocur</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
EXPLOR_STEP=$WICRI_ROOT/Wicri/Canada/explor/ParkinsonCanadaV1/Data/Istex/Checkpoint
HfdSelect -h $EXPLOR_STEP/biblio.hfd -nk 001473 | SxmlIndent | more
Ou
HfdSelect -h $EXPLOR_AREA/Data/Istex/Checkpoint/biblio.hfd -nk 001473 | SxmlIndent | more
Pour mettre un lien sur cette page dans le réseau Wicri
{{Explor lien
|wiki= Wicri/Canada
|area= ParkinsonCanadaV1
|flux= Istex
|étape= Checkpoint
|type= RBID
|clé= ISTEX:A2A44F41E24E151D0897395BE37F552BE9EEFDC2
|texte= Clustering and switching on verbal fluency: the effects of focal frontal- and temporal-lobe lesions
}}
| This area was generated with Dilib version V0.6.29. |  |