Do the Subjective Visual Vertical and the Subjective Haptic Vertical Probe a Common Estimate of Gravitational Upright?

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dc.contributor.advisorHarris, Laurence
dc.creatorFraser, Lindsey Ellen
dc.date.accessioned2015-01-26T14:55:03Z
dc.date.available2015-01-26T14:55:03Z
dc.date.copyright2014-08-18
dc.date.issued2015-01-26
dc.date.updated2015-01-26T14:55:03Z
dc.degree.disciplinePsychology (Functional Area: Brain, Behaviour & Cognitive Sciences
dc.degree.levelMaster's
dc.degree.nameMA - Master of Arts
dc.description.abstractIn the subjective visual vertical (SVV) and the subjective haptic vertical (SHV) task, participants must judge the alignment of a probe rod with perceived gravitational vertical by sight or by touch. Previous research suggests that as the body is roll-tilted, SVV and SHV show a systematic, distinct pattern of errors, although reports vary. The purpose of this research was to identify whether SVV and SHV probe the same underlying representation of gravity. In Experiment 1, I confirmed that SVV and SHV errors are divergent by comparing the two measures in the same participants. In Experiment 2, I varied the tilt of the head and body separately and applied galvanic vestibular stimulation to introduce vestibular noise. I found these manipulations had differential effects on SVV and SHV. Experiment 3 showed that when neck afferents were stimulated, SVV and SHV integrate optimally, pointing to two distinct underlying estimates of gravity vertical.
dc.identifier.urihttp://hdl.handle.net/10315/28244
dc.language.isoen
dc.rightsAuthor owns copyright, except where explicitly noted. Please contact the author directly with licensing requests.
dc.subjectExperimental psychology
dc.subjectPsychology
dc.subject.keywordsBimodalen_US
dc.subject.keywordsSVVen_US
dc.subject.keywordsSHVen_US
dc.subject.keywordsSubjective visual verticalen_US
dc.subject.keywordsSubjective haptic verticalen_US
dc.subject.keywordsSubjective tactile verticalen_US
dc.subject.keywordsGravityen_US
dc.subject.keywordsPerceptionen_US
dc.subject.keywordsMLEen_US
dc.subject.keywordsMaximum Likelihooden_US
dc.subject.keywordsModelen_US
dc.subject.keywordsVestibularen_US
dc.subject.keywordsGVSen_US
dc.subject.keywordsGalvanic vestibular stimulationen_US
dc.subject.keywordsNeck vibrationen_US
dc.subject.keywordsBilateral neck vibrationen_US
dc.subject.keywordsOptimal integrationen_US
dc.titleDo the Subjective Visual Vertical and the Subjective Haptic Vertical Probe a Common Estimate of Gravitational Upright?
dc.typeElectronic Thesis or Dissertationen_US

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