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dc.contributor.authorCalabro, Finneganen_US
dc.contributor.authorVaina, Lucia M.en_US
dc.coverage.spatialUnited Statesen_US
dc.date.accessioned2016-10-24T14:27:08Z
dc.date.available2016-10-24T14:27:08Z
dc.date.issued2016
dc.identifierhttp://www.ncbi.nlm.nih.gov/pubmed/27231114
dc.identifier.citationFinnegan J Calabro, Lucia Maria Vaina. 2016. "Scale Changes Provide an Alternative Cue For the Discrimination of Heading, But Not Object Motion." Med Sci Monit, Volume 22, pp. 1782 - 1791.
dc.identifier.issn1643-3750
dc.identifier.urihttps://hdl.handle.net/2144/18659
dc.description.abstractBACKGROUND Understanding the dynamics of our surrounding environments is a task usually attributed to the detection of motion based on changes in luminance across space. Yet a number of other cues, both dynamic and static, have been shown to provide useful information about how we are moving and how objects around us move. One such cue, based on changes in spatial frequency, or scale, over time has been shown to be useful in conveying motion in depth even in the absence of a coherent, motion-defined flow field (optic flow). MATERIAL AND METHODS 16 right handed healthy observers (ages 18-28) participated in the behavioral experiments described in this study. Using analytical behavioral methods we investigate the functional specificity of this cue by measuring the ability of observers to perform tasks of heading (direction of self-motion) and 3D trajectory discrimination on the basis of scale changes and optic flow. RESULTS Statistical analyses of performance on the test-experiments in comparison to the control experiments suggests that while scale changes may be involved in the detection of heading, they are not correctly integrated with translational motion and, thus, do not provide a correct discrimination of 3D object trajectories. CONCLUSIONS These results have the important implication for the type of visual guided navigation that can be done by an observer blind to optic flow. Scale change is an important alternative cue for self-motion.en_US
dc.format.extent1782 - 1791en_US
dc.languageeng
dc.language.isoen_US
dc.relation.ispartofMed Sci Monit
dc.relation.ispartofMedical Science Monitor
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 Internationalen_US
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/
dc.subjectMotionen_US
dc.subjectOptic flowen_US
dc.subjectVision testsen_US
dc.subjectGeneral clinical medicineen_US
dc.titleScale changes provide an alternative cue for the discrimination of heading, but not object motionen_US
dc.typeArticleen_US
pubs.notesEmbargo: No embargoen_US
pubs.organisational-groupBoston Universityen_US
pubs.organisational-groupBoston University/College of Engineeringen_US
pubs.organisational-groupBoston University/College of Engineering/Department of Biomedical Engineeringen_US
dc.identifier.orcid0000-0002-5636-8352 (Vaina, Lucia Maria)


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Attribution-NonCommercial-NoDerivatives 4.0 International
Except where otherwise noted, this item's license is described as Attribution-NonCommercial-NoDerivatives 4.0 International