Progressive locomotor recalibration during blind walking
Identifieur interne : 000E54 ( Pmc/Curation ); précédent : 000E53; suivant : 000E55Progressive locomotor recalibration during blind walking
Auteurs : John W. Philbeck ; Adam J. Woods ; Joeanna Arthur ; Jennifer ToddSource :
- Perception & psychophysics [ 0031-5117 ] ; 2008.
Abstract
Blind walking has become a common measure of perceived target location. This article addresses the possibility that blind walking might vary systematically within an experimental session as participants accrue exposure to nonvisual locomotion. Such variations could complicate the interpretation of blind walking as a measure of perceived location. We measured walked distance, velocity, and pace length in indoor and outdoor environments (1.5–16.0 m target distances). Walked distance increased over 37 trials by approximately 9.33% of the target distance; velocity (and to a lesser extent, pace length) also increased, primarily in the first few trials. In addition, participants exhibited more unintentional forward drift in a blindfolded marching-in-place task after exposure to nonvisual walking. The results suggest that participants not only gain confidence as blind-walking exposure increases, but also adapt to nonvisual walking in a way that biases responses toward progressively longer walked distances.
Url:
DOI: 10.3758/PP.70.8.1459
PubMed: 19064490
PubMed Central: 2892263
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<record><TEI><teiHeader><fileDesc><titleStmt><title xml:lang="en">Progressive locomotor recalibration during blind walking</title><author><name sortKey="Philbeck, John W" sort="Philbeck, John W" uniqKey="Philbeck J" first="John W." last="Philbeck">John W. Philbeck</name></author><author><name sortKey="Woods, Adam J" sort="Woods, Adam J" uniqKey="Woods A" first="Adam J." last="Woods">Adam J. Woods</name></author><author><name sortKey="Arthur, Joeanna" sort="Arthur, Joeanna" uniqKey="Arthur J" first="Joeanna" last="Arthur">Joeanna Arthur</name></author><author><name sortKey="Todd, Jennifer" sort="Todd, Jennifer" uniqKey="Todd J" first="Jennifer" last="Todd">Jennifer Todd</name></author></titleStmt><publicationStmt><idno type="wicri:source">PMC</idno><idno type="pmid">19064490</idno><idno type="pmc">2892263</idno><idno type="url">http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2892263</idno><idno type="RBID">PMC:2892263</idno><idno type="doi">10.3758/PP.70.8.1459</idno><date when="2008">2008</date><idno type="wicri:Area/Pmc/Corpus">000E54</idno><idno type="wicri:Area/Pmc/Curation">000E54</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en" level="a" type="main">Progressive locomotor recalibration during blind walking</title><author><name sortKey="Philbeck, John W" sort="Philbeck, John W" uniqKey="Philbeck J" first="John W." last="Philbeck">John W. Philbeck</name></author><author><name sortKey="Woods, Adam J" sort="Woods, Adam J" uniqKey="Woods A" first="Adam J." last="Woods">Adam J. Woods</name></author><author><name sortKey="Arthur, Joeanna" sort="Arthur, Joeanna" uniqKey="Arthur J" first="Joeanna" last="Arthur">Joeanna Arthur</name></author><author><name sortKey="Todd, Jennifer" sort="Todd, Jennifer" uniqKey="Todd J" first="Jennifer" last="Todd">Jennifer Todd</name></author></analytic><series><title level="j">Perception & psychophysics</title><idno type="ISSN">0031-5117</idno><idno type="eISSN">1532-5962</idno><imprint><date when="2008">2008</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en"><p id="P1">Blind walking has become a common measure of perceived target location. This article addresses the possibility that blind walking might vary systematically within an experimental session as participants accrue exposure to nonvisual locomotion. Such variations could complicate the interpretation of blind walking as a measure of perceived location. We measured walked distance, velocity, and pace length in indoor and outdoor environments (1.5–16.0 m target distances). Walked distance increased over 37 trials by approximately 9.33% of the target distance; velocity (and to a lesser extent, pace length) also increased, primarily in the first few trials. In addition, participants exhibited more unintentional forward drift in a blindfolded marching-in-place task after exposure to nonvisual walking. The results suggest that participants not only gain confidence as blind-walking exposure increases, but also adapt to nonvisual walking in a way that biases responses toward progressively longer walked distances.</p></div></front></TEI><pmc article-type="research-article" xml:lang="EN"><pmc-comment>The publisher of this article does not allow downloading of the full text in XML form.</pmc-comment>
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<front><journal-meta><journal-id journal-id-type="nlm-journal-id">0200445</journal-id><journal-id journal-id-type="pubmed-jr-id">6415</journal-id><journal-id journal-id-type="nlm-ta">Percept Psychophys</journal-id><journal-title>Perception & psychophysics</journal-title><issn pub-type="ppub">0031-5117</issn><issn pub-type="epub">1532-5962</issn></journal-meta><article-meta><article-id pub-id-type="pmid">19064490</article-id><article-id pub-id-type="pmc">2892263</article-id><article-id pub-id-type="doi">10.3758/PP.70.8.1459</article-id><article-id pub-id-type="manuscript">NIHMS209480</article-id><article-categories><subj-group subj-group-type="heading"><subject>Article</subject></subj-group></article-categories><title-group><article-title>Progressive locomotor recalibration during blind walking</article-title></title-group><contrib-group><contrib contrib-type="author"><name><surname>Philbeck</surname><given-names>John W.</given-names></name><aff id="A1">George Washington University, Washington, D.C</aff></contrib><contrib contrib-type="author"><name><surname>Woods</surname><given-names>Adam J.</given-names></name><aff id="A2">George Washington University, Washington, D.C</aff></contrib><contrib contrib-type="author"><name><surname>Arthur</surname><given-names>Joeanna</given-names></name><aff id="A3">George Washington University, Washington, D.C</aff></contrib><contrib contrib-type="author"><name><surname>Todd</surname><given-names>Jennifer</given-names></name><aff id="A4">University of Maryland, Baltimore, Maryland</aff></contrib></contrib-group><author-notes><corresp id="FN1">Correspondence concerning this article should be addressed to J. W. Philbeck, Department of Psychology, George Washington University, 2125 G Street, N.W., Washington, DC 20052 (<email>philbeck@gwu.edu</email>)</corresp></author-notes><pub-date pub-type="nihms-submitted"><day>2</day><month>6</month><year>2010</year></pub-date><pub-date pub-type="ppub"><month>11</month><year>2008</year></pub-date><pub-date pub-type="pmc-release"><day>25</day><month>6</month><year>2010</year></pub-date><volume>70</volume><issue>8</issue><fpage>1459</fpage><lpage>1470</lpage><abstract><p id="P1">Blind walking has become a common measure of perceived target location. This article addresses the possibility that blind walking might vary systematically within an experimental session as participants accrue exposure to nonvisual locomotion. Such variations could complicate the interpretation of blind walking as a measure of perceived location. We measured walked distance, velocity, and pace length in indoor and outdoor environments (1.5–16.0 m target distances). Walked distance increased over 37 trials by approximately 9.33% of the target distance; velocity (and to a lesser extent, pace length) also increased, primarily in the first few trials. In addition, participants exhibited more unintentional forward drift in a blindfolded marching-in-place task after exposure to nonvisual walking. The results suggest that participants not only gain confidence as blind-walking exposure increases, but also adapt to nonvisual walking in a way that biases responses toward progressively longer walked distances.</p></abstract><contract-num rid="NS1">R01 NS052137-04
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