The coordination of two‐effector actions: Spoon‐feeding and intermanual prehension
Identifieur interne : 004D05 ( Istex/Corpus ); précédent : 004D04; suivant : 004D06The coordination of two‐effector actions: Spoon‐feeding and intermanual prehension
Auteurs : Andrew Churchill ; Stefan Vogt ; Brian HopkinsSource :
- British Journal of Psychology [ 0007-1269 ] ; 1999-05.
Abstract
The aim of this study was to assess whether kinematic characteristics of unimanual (one‐effector) prehension movements can also be found in tasks where the transport and grasp components are distributed across separate effectors. Expt 1 compared prehension with spoon‐feeding and showed that a number of kinematic landmarks, such as time to peak aperture, were similar. An unexpected difference between the tasks was that the onsets of the transport and grasp components in the two‐effector task were not always synchronized. To control for a number of differences between the tasks used in Expt 1, such as the role of haptic and visual information, Expt 2 compared unimanual with intermanual prehension, which involved passing an object from one hand to the other. The results were consistent with those found in Expt 1. In particular, time to peak aperture was similar over the different tasks, despite a lack of consistent coupling between the components at movement onset. We conclude that the one‐ and two‐effector tasks pose largely the same task constraints and are coordinated in a similar way. Intermanual prehension tasks thus provide a useful experimental tool for manipulations that are difficult or impossible to perform with unimanual reaching and grasping.
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DOI: 10.1348/000712699161404
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Expt 1 compared prehension with spoon‐feeding and showed that a number of kinematic landmarks, such as time to peak aperture, were similar. An unexpected difference between the tasks was that the onsets of the transport and grasp components in the two‐effector task were not always synchronized. To control for a number of differences between the tasks used in Expt 1, such as the role of haptic and visual information, Expt 2 compared unimanual with intermanual prehension, which involved passing an object from one hand to the other. The results were consistent with those found in Expt 1. In particular, time to peak aperture was similar over the different tasks, despite a lack of consistent coupling between the components at movement onset. We conclude that the one‐ and two‐effector tasks pose largely the same task constraints and are coordinated in a similar way. Intermanual prehension tasks thus provide a useful experimental tool for manipulations that are difficult or impossible to perform with unimanual reaching and grasping.</div></front></TEI><istex><corpusName>wiley</corpusName><author><json:item><name>Andrew Churchill</name><affiliations><json:string>Department of Psychology, Lancaster University, UK</json:string></affiliations></json:item><json:item><name>Stefan Vogt</name><affiliations><json:string>Department of Psychology, Lancaster University, UK</json:string></affiliations></json:item><json:item><name>Brian Hopkins</name><affiliations><json:string>Department of Psychology, Lancaster University, UK</json:string></affiliations></json:item></author><articleId><json:string>BJOP22</json:string></articleId><language><json:string>eng</json:string></language><abstract>The aim of this study was to assess whether kinematic characteristics of unimanual (one‐effector) prehension movements can also be found in tasks where the transport and grasp components are distributed across separate effectors. Expt 1 compared prehension with spoon‐feeding and showed that a number of kinematic landmarks, such as time to peak aperture, were similar. An unexpected difference between the tasks was that the onsets of the transport and grasp components in the two‐effector task were not always synchronized. To control for a number of differences between the tasks used in Expt 1, such as the role of haptic and visual information, Expt 2 compared unimanual with intermanual prehension, which involved passing an object from one hand to the other. The results were consistent with those found in Expt 1. In particular, time to peak aperture was similar over the different tasks, despite a lack of consistent coupling between the components at movement onset. We conclude that the one‐ and two‐effector tasks pose largely the same task constraints and are coordinated in a similar way. 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Expt 1 compared prehension with spoon‐feeding and showed that a number of kinematic landmarks, such as time to peak aperture, were similar. An unexpected difference between the tasks was that the onsets of the transport and grasp components in the two‐effector task were not always synchronized. To control for a number of differences between the tasks used in Expt 1, such as the role of haptic and visual information, Expt 2 compared unimanual with intermanual prehension, which involved passing an object from one hand to the other. The results were consistent with those found in Expt 1. In particular, time to peak aperture was similar over the different tasks, despite a lack of consistent coupling between the components at movement onset. We conclude that the one‐ and two‐effector tasks pose largely the same task constraints and are coordinated in a similar way. Intermanual prehension tasks thus provide a useful experimental tool for manipulations that are difficult or impossible to perform with unimanual reaching and grasping.</p></abstract></abstractGroup></contentMeta></header></component></istex:document></istex:metadataXml><mods version="3.6"><titleInfo lang="en"><title>The coordination of two‐effector actions: Spoon‐feeding and intermanual prehension</title></titleInfo><titleInfo type="alternative" contentType="CDATA" lang="en"><title>The coordination of two‐effector actions: Spoon‐feeding and intermanual prehension</title></titleInfo><name type="personal"><namePart type="given">Andrew</namePart><namePart type="family">Churchill</namePart><affiliation>Department of Psychology, Lancaster University, UK</affiliation><description>Correspondence: Andrew Churchill or Stefan Vogt, Department of Psychology, Lancaster University, Lancaster LA1 4YF, UK (e‐mail: ).</description><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">Stefan</namePart><namePart type="family">Vogt</namePart><affiliation>Department of Psychology, Lancaster University, UK</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">Brian</namePart><namePart type="family">Hopkins</namePart><affiliation>Department of Psychology, Lancaster University, UK</affiliation><role><roleTerm type="text">author</roleTerm></role></name><typeOfResource>text</typeOfResource><genre type="article" displayLabel="article"></genre><originInfo><publisher>Blackwell Publishing Ltd</publisher><place><placeTerm type="text">Oxford, UK</placeTerm></place><dateIssued encoding="w3cdtf">1999-05</dateIssued><copyrightDate encoding="w3cdtf">1999</copyrightDate></originInfo><language><languageTerm type="code" authority="rfc3066">en</languageTerm><languageTerm type="code" authority="iso639-2b">eng</languageTerm></language><physicalDescription><internetMediaType>text/html</internetMediaType></physicalDescription><abstract lang="en">The aim of this study was to assess whether kinematic characteristics of unimanual (one‐effector) prehension movements can also be found in tasks where the transport and grasp components are distributed across separate effectors. Expt 1 compared prehension with spoon‐feeding and showed that a number of kinematic landmarks, such as time to peak aperture, were similar. An unexpected difference between the tasks was that the onsets of the transport and grasp components in the two‐effector task were not always synchronized. To control for a number of differences between the tasks used in Expt 1, such as the role of haptic and visual information, Expt 2 compared unimanual with intermanual prehension, which involved passing an object from one hand to the other. The results were consistent with those found in Expt 1. In particular, time to peak aperture was similar over the different tasks, despite a lack of consistent coupling between the components at movement onset. We conclude that the one‐ and two‐effector tasks pose largely the same task constraints and are coordinated in a similar way. Intermanual prehension tasks thus provide a useful experimental tool for manipulations that are difficult or impossible to perform with unimanual reaching and grasping.</abstract><relatedItem type="host"><titleInfo><title>British Journal of Psychology</title></titleInfo><genre type="journal">journal</genre><identifier type="ISSN">0007-1269</identifier><identifier type="eISSN">2044-8295</identifier><identifier type="DOI">10.1111/(ISSN)2044-8295</identifier><identifier type="PublisherID">BJOP</identifier><part><date>1999</date><detail type="volume"><caption>vol.</caption><number>90</number></detail><detail type="issue"><caption>no.</caption><number>2</number></detail><extent unit="pages"><start>271</start><end>290</end><total>20</total></extent></part></relatedItem><identifier type="istex">9B8B2ABCD948E78A3EEB5AD763F87DA519B7F5A5</identifier><identifier type="DOI">10.1348/000712699161404</identifier><identifier type="ArticleID">BJOP22</identifier><accessCondition type="use and reproduction" contentType="copyright">1999 The British Psychological Society</accessCondition><recordInfo><recordContentSource>WILEY</recordContentSource><recordOrigin>Blackwell Publishing Ltd</recordOrigin></recordInfo></mods></metadata><serie></serie></istex></record>Pour manipuler ce document sous Unix (Dilib)
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