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Spatial Representations From Perception and Cognitive Mediation

Identifieur interne : 001534 ( Ncbi/Merge ); précédent : 001533; suivant : 001535

Spatial Representations From Perception and Cognitive Mediation

Auteurs : Roberta L. Klatzky [États-Unis] ; Bing Wu [États-Unis] ; George Stetten [États-Unis]

Source :

Current directions in psychological science [ 0963-7214 ] ; 2008.

RBID : PMC:2864501

Abstract

Spatial representations can be derived not only by direct perception, but also through cognitive mediation. Conventional or ex-situ ultrasound displays, which displace imaged data to a remote screen, require both types of process. To determine the depth of a target hidden beneath a surface, ultrasound users must both perceive how deeply the ultrasound transducer indents the surface and interpret the on-screen image to visualize how deeply the target lies below the transducer. Combining these perceptual and cognitive depth components requires a spatial representation that has been called amodal. We report experiments measuring errors in perceptual and cognitively mediated depth estimates and show that these estimates can be concatenated (linked) without further error, providing evidence for an amodal representation. We further contrast conventional ultrasound with an in-situ display whereby an ultrasound image appears to float at the precise location being imaged, enabling the depth of a target to be directly perceived. The research has the potential to enhance ultrasound-guided surgical intervention.

Url:

http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2864501

DOI: 10.1111/j.1467-8721.2008.00606.x
PubMed: 20448831
PubMed Central: 2864501

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PMC:2864501

Le document en format XML

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<front><div type="abstract" xml:lang="en"><p id="P1">Spatial representations can be derived not only by direct perception, but also through cognitive mediation. Conventional or ex-situ ultrasound displays, which displace imaged data to a remote screen, require both types of process. To determine the depth of a target hidden beneath a surface, ultrasound users must both perceive how deeply the ultrasound transducer indents the surface and interpret the on-screen image to visualize how deeply the target lies below the transducer. Combining these perceptual and cognitive depth components requires a spatial representation that has been called amodal. We report experiments measuring errors in perceptual and cognitively mediated depth estimates and show that these estimates can be concatenated (linked) without further error, providing evidence for an amodal representation. We further contrast conventional ultrasound with an in-situ display whereby an ultrasound image appears to float at the precise location being imaged, enabling the depth of a target to be directly perceived. The research has the potential to enhance ultrasound-guided surgical intervention.</p>
</div>
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<title-group><article-title>Spatial Representations From Perception and Cognitive Mediation</article-title>
<subtitle>The Case of Ultrasound</subtitle>
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<contrib-group><contrib contrib-type="author"><name><surname>Klatzky</surname>
<given-names>Roberta L.</given-names>
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<contrib contrib-type="author"><name><surname>Stetten</surname>
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Department of Psychology, Carnegie Mellon University</aff>
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Robotics Institute, Carnegie Mellon University</aff>
<aff id="A3"><label>3</label>
Department of Bioengineering, University of Pittsburgh</aff>
<author-notes><corresp id="FN1">Address correspondence to Roberta L. Klatzky, Department of Psychology, Carnegie Mellon University, Pittsburgh, PA 15213; <email>klatzky@cmu.edu</email>
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<pub-date pub-type="nihms-submitted"><day>27</day>
<month>4</month>
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<pub-date pub-type="ppub"><month>12</month>
<year>2008</year>
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<pub-date pub-type="pmc-release"><day>5</day>
<month>5</month>
<year>2010</year>
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<volume>17</volume>
<issue>6</issue>
<fpage>359</fpage>
<lpage>364</lpage>
<abstract><p id="P1">Spatial representations can be derived not only by direct perception, but also through cognitive mediation. Conventional or ex-situ ultrasound displays, which displace imaged data to a remote screen, require both types of process. To determine the depth of a target hidden beneath a surface, ultrasound users must both perceive how deeply the ultrasound transducer indents the surface and interpret the on-screen image to visualize how deeply the target lies below the transducer. Combining these perceptual and cognitive depth components requires a spatial representation that has been called amodal. We report experiments measuring errors in perceptual and cognitively mediated depth estimates and show that these estimates can be concatenated (linked) without further error, providing evidence for an amodal representation. We further contrast conventional ultrasound with an in-situ display whereby an ultrasound image appears to float at the precise location being imaged, enabling the depth of a target to be directly perceived. The research has the potential to enhance ultrasound-guided surgical intervention.</p>
</abstract>
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<contract-sponsor id="EB1">National Institute of Biomedical Imaging and Bioengineering  : NIBIB</contract-sponsor>
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Spatial Representations From Perception and Cognitive Mediation

Spatial Representations From Perception and Cognitive Mediation

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