Tactile perceptual asymmetry: The influence of motor activity and imagery instructions
Identifieur interne : 003F17 ( Istex/Corpus ); précédent : 003F16; suivant : 003F18Tactile perceptual asymmetry: The influence of motor activity and imagery instructions
Auteurs : Ken Mcfarland ; Roderick Ashton ; Genevieve HeathSource :
- [ 0007-1269 ]
Abstract
The purpose of this study was to examine the degree to which changes in muscular activity modify tactile perceptual asymmetries. In two experiments subjects were presented with a series of pairs of random shapes to the fingers of each hand. Their task was to detect the occurrence of a previously learnt target shape. Pressing on to the shape was the only movement allowed and other types of motor activity, particularly tracing movements, were not permitted. Across experimental conditions subjects were required to change the pressure and hence muscular effort used to press upon the shape. A left‐hand advantage was found across all experimental conditions and its size did not change when subjects were required to press either firmly or lightly upon the shapes. This result was also found when subjects were required to apply uneven pressure between the hands. One‐half of the subjects also performed the experimental conditions following instructions to use imagery. This produced an enhancement of right‐hand performance on the task with a loss of the left‐hand advantage. The results suggest that observed tactile perceptual asymmetries, while unaffected by changes in muscular effort, are easily overridden by higher‐order cognitive and motor processes.
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DOI: 10.1111/j.2044-8295.1989.tb02340.x
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In two experiments subjects were presented with a series of pairs of random shapes to the fingers of each hand. Their task was to detect the occurrence of a previously learnt target shape. Pressing on to the shape was the only movement allowed and other types of motor activity, particularly tracing movements, were not permitted. Across experimental conditions subjects were required to change the pressure and hence muscular effort used to press upon the shape. A left‐hand advantage was found across all experimental conditions and its size did not change when subjects were required to press either firmly or lightly upon the shapes. This result was also found when subjects were required to apply uneven pressure between the hands. One‐half of the subjects also performed the experimental conditions following instructions to use imagery. This produced an enhancement of right‐hand performance on the task with a loss of the left‐hand advantage. The results suggest that observed tactile perceptual asymmetries, while unaffected by changes in muscular effort, are easily overridden by higher‐order cognitive and motor processes.</div></front></TEI><istex><corpusName>wiley</corpusName><author><json:item><name>Ken McFarland</name><affiliations><json:string>Department of Psychology, University of Queensland, St Lucia, Queensland 4067, Australia</json:string></affiliations></json:item><json:item><name>Roderick Ashton</name><affiliations><json:string>Department of Psychology, University of Queensland, St Lucia, Queensland 4067, Australia</json:string></affiliations></json:item><json:item><name>Genevieve Heath</name><affiliations><json:string>Department of Psychology, University of Queensland, St Lucia, Queensland 4067, Australia</json:string></affiliations></json:item></author><articleId><json:string>BJOP2340</json:string></articleId><language><json:string>eng</json:string></language><abstract>The purpose of this study was to examine the degree to which changes in muscular activity modify tactile perceptual asymmetries. In two experiments subjects were presented with a series of pairs of random shapes to the fingers of each hand. Their task was to detect the occurrence of a previously learnt target shape. Pressing on to the shape was the only movement allowed and other types of motor activity, particularly tracing movements, were not permitted. Across experimental conditions subjects were required to change the pressure and hence muscular effort used to press upon the shape. A left‐hand advantage was found across all experimental conditions and its size did not change when subjects were required to press either firmly or lightly upon the shapes. This result was also found when subjects were required to apply uneven pressure between the hands. One‐half of the subjects also performed the experimental conditions following instructions to use imagery. This produced an enhancement of right‐hand performance on the task with a loss of the left‐hand advantage. 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revised version received 21 June 1989</unparsedEditorialHistory><countGroup><count type="referenceTotal" number="0"></count><count type="linksCrossRef" number="4"></count></countGroup><titleGroup><title type="main">Tactile perceptual asymmetry: The influence of motor activity and imagery instructions</title></titleGroup><creators><creator creatorRole="author" xml:id="cr1" affiliationRef="#a1" noteRef="#fn1"><personName><givenNames>Ken</givenNames><familyName>McFarland</familyName></personName></creator><creator creatorRole="author" xml:id="cr2" affiliationRef="#a1"><personName><givenNames>Roderick</givenNames><familyName>Ashton</familyName></personName></creator><creator creatorRole="author" xml:id="cr3" affiliationRef="#a1"><personName><givenNames>Genevieve</givenNames><familyName>Heath</familyName></personName></creator></creators><affiliationGroup><affiliation xml:id="a1" countryCode="AU"><unparsedAffiliation>Department of Psychology, University of Queensland, St Lucia, Queensland 4067, Australia</unparsedAffiliation></affiliation></affiliationGroup><abstractGroup><abstract type="main" xml:lang="en"><p>The purpose of this study was to examine the degree to which changes in muscular activity modify tactile perceptual asymmetries. In two experiments subjects were presented with a series of pairs of random shapes to the fingers of each hand. Their task was to detect the occurrence of a previously learnt target shape. Pressing on to the shape was the only movement allowed and other types of motor activity, particularly tracing movements, were not permitted. Across experimental conditions subjects were required to change the pressure and hence muscular effort used to press upon the shape. A left‐hand advantage was found across all experimental conditions and its size did not change when subjects were required to press either firmly or lightly upon the shapes. This result was also found when subjects were required to apply uneven pressure between the hands. One‐half of the subjects also performed the experimental conditions following instructions to use imagery. This produced an enhancement of right‐hand performance on the task with a loss of the left‐hand advantage. The results suggest that observed tactile perceptual asymmetries, while unaffected by changes in muscular effort, are easily overridden by higher‐order cognitive and motor processes.</p></abstract></abstractGroup></contentMeta><noteGroup><note xml:id="fn1"><p>Requests for reprints.</p></note></noteGroup></header></component></istex:document></istex:metadataXml><mods version="3.6"><titleInfo lang="en"><title>Tactile perceptual asymmetry: The influence of motor activity and imagery instructions</title></titleInfo><titleInfo type="alternative" contentType="CDATA" lang="en"><title>Tactile perceptual asymmetry: The influence of motor activity and imagery instructions</title></titleInfo><name type="personal"><namePart type="given">Ken</namePart><namePart type="family">McFarland</namePart><affiliation>Department of Psychology, University of Queensland, St Lucia, Queensland 4067, Australia</affiliation><description>Requests for reprints.</description><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">Roderick</namePart><namePart type="family">Ashton</namePart><affiliation>Department of Psychology, University of Queensland, St Lucia, Queensland 4067, Australia</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">Genevieve</namePart><namePart type="family">Heath</namePart><affiliation>Department of Psychology, University of Queensland, St Lucia, Queensland 4067, Australia</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">1989-11</dateIssued><edition>Received 1 February 1989; revised version received 21 June 1989</edition><copyrightDate encoding="w3cdtf">1989</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 purpose of this study was to examine the degree to which changes in muscular activity modify tactile perceptual asymmetries. In two experiments subjects were presented with a series of pairs of random shapes to the fingers of each hand. Their task was to detect the occurrence of a previously learnt target shape. Pressing on to the shape was the only movement allowed and other types of motor activity, particularly tracing movements, were not permitted. Across experimental conditions subjects were required to change the pressure and hence muscular effort used to press upon the shape. A left‐hand advantage was found across all experimental conditions and its size did not change when subjects were required to press either firmly or lightly upon the shapes. This result was also found when subjects were required to apply uneven pressure between the hands. One‐half of the subjects also performed the experimental conditions following instructions to use imagery. This produced an enhancement of right‐hand performance on the task with a loss of the left‐hand advantage. The results suggest that observed tactile perceptual asymmetries, while unaffected by changes in muscular effort, are easily overridden by higher‐order cognitive and motor processes.</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>1989</date><detail type="volume"><caption>vol.</caption><number>80</number></detail><detail type="issue"><caption>no.</caption><number>4</number></detail><extent unit="pages"><start>517</start><end>525</end><total>9</total></extent></part></relatedItem><identifier type="istex">912167D625695594AF2B2865BAA4AD9A1E44D292</identifier><identifier type="DOI">10.1111/j.2044-8295.1989.tb02340.x</identifier><identifier type="ArticleID">BJOP2340</identifier><accessCondition type="use and reproduction" contentType="copyright">1989 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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