title: Bayesian Analysis of Perceived Eye Level.
abstract: To accurately perceive the world, people must efficiently combine internal beliefs and external sensory cues. We introduce a Bayesian framework that explains the role of internal balance cues and visual stimuli on perceived eye level (PEL)-a self-reported measure of elevation angle. This framework provides a single, coherent model explaining a set of experimentally observed PEL over a range of experimental conditions. Further, it provides a parsimonious explanation for the additive effect of low fidelity cues as well as the averaging effect of high fidelity cues, as also found in other Bayesian cue combination psychophysical studies. Our model accurately estimates the PEL and explains the form of previous equations used in describing PEL behavior. Most importantly, the proposed Bayesian framework for PEL is more powerful than previous behavioral modeling; it permits behavioral estimation in a wider range of cue combination and perceptual studies than models previously reported.
authors.affiliation: École des Neurosciences de Paris, Université Pierre et Marie CurieParis, France; Department of Biology, Loyola University ChicagoChicago, IL, USA.
authors.forename: Elaine E
authors.initials: EE
authors.lastname: Orendorff
authors.affiliation: Department of Biology, Loyola University ChicagoChicago, IL, USA; Bioinformatics Program, Loyola University ChicagoChicago, IL, USA.
authors.forename: Laurynas
authors.initials: L
authors.lastname: Kalesinskas
authors.affiliation: Department of Psychology, Loyola University ChicagoChicago, IL, USA; Department of Medical and Social Sciences, Northwestern UniversityChicago, IL, USA.
authors.forename: Robert T
authors.initials: RT
authors.lastname: Palumbo
authors.affiliation: Bioinformatics Program, Loyola University ChicagoChicago, IL, USA; Department of Computer Science, Loyola University ChicagoChicago, IL, USA.
authors.forename: Mark V
authors.initials: MV
authors.lastname: Albert
keywords: Bayesian analysis; cue combination; elevation estimation; perceived eye level; visual psychophysics