Humans integrate visual and haptic information in a statistically optimal fashion.
Identifieur interne : 000270 ( Ncbi/Checkpoint ); précédent : 000269; suivant : 000271Humans integrate visual and haptic information in a statistically optimal fashion.
Auteurs : Marc O. Ernst [États-Unis] ; Martin S. BanksSource :
- Nature [ 0028-0836 ] ; 2002.
English descriptors
- KwdEn :
- MESH :
- physiology : Size Perception, Touch.
- Adult, Humans, Models, Neurological, Sensory Thresholds.
Abstract
When a person looks at an object while exploring it with their hand, vision and touch both provide information for estimating the properties of the object. Vision frequently dominates the integrated visual-haptic percept, for example when judging size, shape or position, but in some circumstances the percept is clearly affected by haptics. Here we propose that a general principle, which minimizes variance in the final estimate, determines the degree to which vision or haptics dominates. This principle is realized by using maximum-likelihood estimation to combine the inputs. To investigate cue combination quantitatively, we first measured the variances associated with visual and haptic estimation of height. We then used these measurements to construct a maximum-likelihood integrator. This model behaved very similarly to humans in a visual-haptic task. Thus, the nervous system seems to combine visual and haptic information in a fashion that is similar to a maximum-likelihood integrator. Visual dominance occurs when the variance associated with visual estimation is lower than that associated with haptic estimation.
DOI: 10.1038/415429a
PubMed: 11807554
Affiliations:
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pubmed:11807554Le document en format XML
<record><TEI><teiHeader><fileDesc><titleStmt><title xml:lang="en">Humans integrate visual and haptic information in a statistically optimal fashion.</title><author><name sortKey="Ernst, Marc O" sort="Ernst, Marc O" uniqKey="Ernst M" first="Marc O" last="Ernst">Marc O. Ernst</name><affiliation wicri:level="1"><nlm:affiliation>Vision Science Program, School of Optometry, University of California, Berkeley 94720-2020, USA. marc.ernst@tuebingen.mpg.de</nlm:affiliation><country xml:lang="fr">États-Unis</country><wicri:regionArea>Vision Science Program, School of Optometry, University of California, Berkeley 94720-2020</wicri:regionArea><placeName><settlement type="city">Berkeley (Californie)</settlement><region type="state">Californie</region></placeName></affiliation></author><author><name sortKey="Banks, Martin S" sort="Banks, Martin S" uniqKey="Banks M" first="Martin S" last="Banks">Martin S. Banks</name></author></titleStmt><publicationStmt><idno type="wicri:source">PubMed</idno><date when="2002">2002</date><idno type="RBID">pubmed:11807554</idno><idno type="pmid">11807554</idno><idno type="doi">10.1038/415429a</idno><idno type="wicri:Area/PubMed/Corpus">001D02</idno><idno type="wicri:Area/PubMed/Curation">001D02</idno><idno type="wicri:Area/PubMed/Checkpoint">001A11</idno><idno type="wicri:Area/Ncbi/Merge">000270</idno><idno type="wicri:Area/Ncbi/Curation">000270</idno><idno type="wicri:Area/Ncbi/Checkpoint">000270</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en">Humans integrate visual and haptic information in a statistically optimal fashion.</title><author><name sortKey="Ernst, Marc O" sort="Ernst, Marc O" uniqKey="Ernst M" first="Marc O" last="Ernst">Marc O. Ernst</name><affiliation wicri:level="1"><nlm:affiliation>Vision Science Program, School of Optometry, University of California, Berkeley 94720-2020, USA. marc.ernst@tuebingen.mpg.de</nlm:affiliation><country xml:lang="fr">États-Unis</country><wicri:regionArea>Vision Science Program, School of Optometry, University of California, Berkeley 94720-2020</wicri:regionArea><placeName><settlement type="city">Berkeley (Californie)</settlement><region type="state">Californie</region></placeName></affiliation></author><author><name sortKey="Banks, Martin S" sort="Banks, Martin S" uniqKey="Banks M" first="Martin S" last="Banks">Martin S. Banks</name></author></analytic><series><title level="j">Nature</title><idno type="ISSN">0028-0836</idno><imprint><date when="2002" type="published">2002</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Adult</term><term>Humans</term><term>Models, Neurological</term><term>Sensory Thresholds</term><term>Size Perception (physiology)</term><term>Touch (physiology)</term></keywords><keywords scheme="MESH" qualifier="physiology" xml:lang="en"><term>Size Perception</term><term>Touch</term></keywords><keywords scheme="MESH" xml:lang="en"><term>Adult</term><term>Humans</term><term>Models, Neurological</term><term>Sensory Thresholds</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">When a person looks at an object while exploring it with their hand, vision and touch both provide information for estimating the properties of the object. Vision frequently dominates the integrated visual-haptic percept, for example when judging size, shape or position, but in some circumstances the percept is clearly affected by haptics. Here we propose that a general principle, which minimizes variance in the final estimate, determines the degree to which vision or haptics dominates. This principle is realized by using maximum-likelihood estimation to combine the inputs. To investigate cue combination quantitatively, we first measured the variances associated with visual and haptic estimation of height. We then used these measurements to construct a maximum-likelihood integrator. This model behaved very similarly to humans in a visual-haptic task. Thus, the nervous system seems to combine visual and haptic information in a fashion that is similar to a maximum-likelihood integrator. Visual dominance occurs when the variance associated with visual estimation is lower than that associated with haptic estimation.</div></front></TEI><affiliations><list><country><li>États-Unis</li></country><region><li>Californie</li></region><settlement><li>Berkeley (Californie)</li></settlement></list><tree><noCountry><name sortKey="Banks, Martin S" sort="Banks, Martin S" uniqKey="Banks M" first="Martin S" last="Banks">Martin S. Banks</name></noCountry><country name="États-Unis"><region name="Californie"><name sortKey="Ernst, Marc O" sort="Ernst, Marc O" uniqKey="Ernst M" first="Marc O" last="Ernst">Marc O. Ernst</name></region></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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