Quantitative Analysis of Rapid Pointing Movements in Cree Subjects Exposed to Mercury and in Subjects with Neurological Deficits
Identifieur interne : 001358 ( Istex/Checkpoint ); précédent : 001357; suivant : 001359Quantitative Analysis of Rapid Pointing Movements in Cree Subjects Exposed to Mercury and in Subjects with Neurological Deficits
Auteurs : Anne Beuter [Canada] ; Anne De Geoffroy [Canada] ; Roderick Edwards [Canada]Source :
- Environmental Research [ 0013-9351 ] ; 1999.
English descriptors
- KwdEn :
Abstract
To quantify rapid and precise proximo–distal movements, we have developed a simple system (eurythmokinesimeter or EKM) which requires the subject to touch alternately the center of proximal and distal targets with a stylus. Ninety-six participants, including 30 controls subjects, 36 Cree subjects exposed to mercury, 21 subjects with Parkinson disease, 6 with presumed cerebellar deficit, and 3 with essential tremor, participated in the study. A total of nine measures, including precision, imprecision, contact duration, unsureness, tremor, transit time, irregularity, speed, and Fitts' constant, were calculated. Test–retest reliability was above 0.8 for most measures and above 0.9 for many measures. Correlations between measures and number of outliers with respect to the control group distribution for each measure were used to reduce the set of measures to five (i.e., precision, imprecision, tremor, Fitts' constant, and irregularity). An ANOVA on the three largest groups generated significant results for tremor, Fitts' constant, and irregularity between the Cree and the control subjects and on Fitts' constant and irregularity between the subjects with Parkinson's disease and the control subjects. Three subgroups of the same mean age composed of six subjects each were selected. One was composed of Cree subjects with the highest level of mercury exposure, another with Cree subjects having a low level of mercury exposure, and a third with control subjects. An ANOVA on these three groups revealed a significant difference between both groups of Cree subjects and the control group for Fitts' constant and irregularity. These preliminary results suggest that the EKM system is able to discriminate the performance of different groups of subjects.
Url:
DOI: 10.1006/enrs.1998.3884
Affiliations:
Links toward previous steps (curation, corpus...)
Links to Exploration step
ISTEX:1ED8C521F27F4311429ED1A9D28ABC232B5E274DLe document en format XML
<record><TEI wicri:istexFullTextTei="biblStruct"><teiHeader><fileDesc><titleStmt><title xml:lang="en">Quantitative Analysis of Rapid Pointing Movements in Cree Subjects Exposed to Mercury and in Subjects with Neurological Deficits</title><author><name sortKey="Beuter, Anne" sort="Beuter, Anne" uniqKey="Beuter A" first="Anne" last="Beuter">Anne Beuter</name></author><author><name sortKey="De Geoffroy, Anne" sort="De Geoffroy, Anne" uniqKey="De Geoffroy A" first="Anne" last="De Geoffroy">Anne De Geoffroy</name></author><author><name sortKey="Edwards, Roderick" sort="Edwards, Roderick" uniqKey="Edwards R" first="Roderick" last="Edwards">Roderick Edwards</name></author></titleStmt><publicationStmt><idno type="wicri:source">ISTEX</idno><idno type="RBID">ISTEX:1ED8C521F27F4311429ED1A9D28ABC232B5E274D</idno><date when="1999" year="1999">1999</date><idno type="doi">10.1006/enrs.1998.3884</idno><idno type="url">https://api-v5.istex.fr/document/1ED8C521F27F4311429ED1A9D28ABC232B5E274D/fulltext/pdf</idno><idno type="wicri:Area/Istex/Corpus">000791</idno><idno type="wicri:explorRef" wicri:stream="Istex" wicri:step="Corpus" wicri:corpus="ISTEX">000791</idno><idno type="wicri:Area/Istex/Curation">000791</idno><idno type="wicri:Area/Istex/Checkpoint">001358</idno><idno type="wicri:explorRef" wicri:stream="Istex" wicri:step="Checkpoint">001358</idno></publicationStmt><sourceDesc><biblStruct><analytic><title level="a" type="main" xml:lang="en">Quantitative Analysis of Rapid Pointing Movements in Cree Subjects Exposed to Mercury and in Subjects with Neurological Deficits</title><author><name sortKey="Beuter, Anne" sort="Beuter, Anne" uniqKey="Beuter A" first="Anne" last="Beuter">Anne Beuter</name><affiliation wicri:level="4"><country xml:lang="fr">Canada</country><wicri:regionArea>Laboratoire de Neuroscience de la Cognition (LNC), Université du Québec à Montréal, CP 8888, Succursale Centre Ville, Montréal, Quebéc, H3C 3P8</wicri:regionArea><orgName type="university">Université du Québec à Montréal</orgName><placeName><settlement type="city">Montréal</settlement><region type="state">Québec</region></placeName></affiliation></author><author><name sortKey="De Geoffroy, Anne" sort="De Geoffroy, Anne" uniqKey="De Geoffroy A" first="Anne" last="De Geoffroy">Anne De Geoffroy</name><affiliation wicri:level="4"><country xml:lang="fr">Canada</country><wicri:regionArea>Laboratoire de Neuroscience de la Cognition (LNC), Université du Québec à Montréal, CP 8888, Succursale Centre Ville, Montréal, Quebéc, H3C 3P8</wicri:regionArea><orgName type="university">Université du Québec à Montréal</orgName><placeName><settlement type="city">Montréal</settlement><region type="state">Québec</region></placeName></affiliation></author><author><name sortKey="Edwards, Roderick" sort="Edwards, Roderick" uniqKey="Edwards R" first="Roderick" last="Edwards">Roderick Edwards</name><affiliation wicri:level="4"><country xml:lang="fr">Canada</country><wicri:regionArea>Laboratoire de Neuroscience de la Cognition (LNC), Université du Québec à Montréal, CP 8888, Succursale Centre Ville, Montréal, Quebéc, H3C 3P8</wicri:regionArea><orgName type="university">Université du Québec à Montréal</orgName><placeName><settlement type="city">Montréal</settlement><region type="state">Québec</region></placeName></affiliation></author></analytic><monogr></monogr><series><title level="j">Environmental Research</title><title level="j" type="abbrev">YENRS</title><idno type="ISSN">0013-9351</idno><imprint><publisher>ELSEVIER</publisher><date type="published" when="1999">1999</date><biblScope unit="volume">80</biblScope><biblScope unit="issue">1</biblScope><biblScope unit="page" from="50">50</biblScope><biblScope unit="page" to="63">63</biblScope></imprint><idno type="ISSN">0013-9351</idno></series></biblStruct></sourceDesc><seriesStmt><idno type="ISSN">0013-9351</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>dysmetria</term><term>eye–hand coordination</term><term>movement pathologies</term><term>neurological deficit</term><term>quantitative measure.</term></keywords></textClass><langUsage><language ident="en">en</language></langUsage></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">To quantify rapid and precise proximo–distal movements, we have developed a simple system (eurythmokinesimeter or EKM) which requires the subject to touch alternately the center of proximal and distal targets with a stylus. Ninety-six participants, including 30 controls subjects, 36 Cree subjects exposed to mercury, 21 subjects with Parkinson disease, 6 with presumed cerebellar deficit, and 3 with essential tremor, participated in the study. A total of nine measures, including precision, imprecision, contact duration, unsureness, tremor, transit time, irregularity, speed, and Fitts' constant, were calculated. Test–retest reliability was above 0.8 for most measures and above 0.9 for many measures. Correlations between measures and number of outliers with respect to the control group distribution for each measure were used to reduce the set of measures to five (i.e., precision, imprecision, tremor, Fitts' constant, and irregularity). An ANOVA on the three largest groups generated significant results for tremor, Fitts' constant, and irregularity between the Cree and the control subjects and on Fitts' constant and irregularity between the subjects with Parkinson's disease and the control subjects. Three subgroups of the same mean age composed of six subjects each were selected. One was composed of Cree subjects with the highest level of mercury exposure, another with Cree subjects having a low level of mercury exposure, and a third with control subjects. An ANOVA on these three groups revealed a significant difference between both groups of Cree subjects and the control group for Fitts' constant and irregularity. These preliminary results suggest that the EKM system is able to discriminate the performance of different groups of subjects.</div></front></TEI><affiliations><list><country><li>Canada</li></country><region><li>Québec</li></region><settlement><li>Montréal</li></settlement><orgName><li>Université du Québec à Montréal</li></orgName></list><tree><country name="Canada"><region name="Québec"><name sortKey="Beuter, Anne" sort="Beuter, Anne" uniqKey="Beuter A" first="Anne" last="Beuter">Anne Beuter</name></region><name sortKey="De Geoffroy, Anne" sort="De Geoffroy, Anne" uniqKey="De Geoffroy A" first="Anne" last="De Geoffroy">Anne De Geoffroy</name><name sortKey="Edwards, Roderick" sort="Edwards, Roderick" uniqKey="Edwards R" first="Roderick" last="Edwards">Roderick Edwards</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 001358 | SxmlIndent | more
Ou
HfdSelect -h $EXPLOR_AREA/Data/Istex/Checkpoint/biblio.hfd -nk 001358 | 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:1ED8C521F27F4311429ED1A9D28ABC232B5E274D
|texte= Quantitative Analysis of Rapid Pointing Movements in Cree Subjects Exposed to Mercury and in Subjects with Neurological Deficits
}}
| This area was generated with Dilib version V0.6.29. |  |