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Conference Paper: A multi-sensory illusion: Hong Kong Peak Tram illusion (II) - subjective vertical

TitleA multi-sensory illusion: Hong Kong Peak Tram illusion (II) - subjective vertical
Authors
Issue Date2011
PublisherPion Ltd.. The Journal's web site is located at http://i-perception.perceptionweb.com/journal/I/
Citation
The 12th International Multisensory Research Forum (IMRF 2011), Fukuoka, Japan, 17-20 October 2011. In i-Perception, 2011, v. 2 n. 8, p. 892 How to Cite?
AbstractOur ability to maintain orientation to the upright is a result of multi-sensory integration, but little is known about how our subjective vertical interacts with our perceived world. We measured observers' subjective vertical in the same environment where we observed the Hong Kong Peak Tram Illusion. We tested whether the perceived tilt of a physically vertical building is a result of observers' misjudgment of their subjective vertical position. Six observers sat in the tram and held a stick on the bench to indicate their subjective vertical on both upward and downward trips. In a separate trip, they did the same measurement with eyes closed. An assistant marked the angle of the stick relative to gravity with a rotary pitch. Observers' reclining position, which matched with the slope of the mountain, was measured simultaneously by another pitch. We found observers' subjective vertical was biased away from gravitational vertical, which linearly increased with mountain slope. A blind-fold reduced this bias to half, suggesting visual information is crucial for our judgment of subjective vertical. However, observers' illusory tilt of buildings did not reflect the same trend, implying the illusion cannot be fully accounted for by observers' misjudgment of subjective vertical.
DescriptionStudent Award Session
Open Access Journal
Persistent Identifierhttp://hdl.handle.net/10722/165718
ISSN

 

DC FieldValueLanguage
dc.contributor.authorChow, HMen_US
dc.contributor.authorChiu, PHen_US
dc.contributor.authorTseng, Cen_US
dc.contributor.authorSpillmann, Len_US
dc.date.accessioned2012-09-20T08:22:30Z-
dc.date.available2012-09-20T08:22:30Z-
dc.date.issued2011en_US
dc.identifier.citationThe 12th International Multisensory Research Forum (IMRF 2011), Fukuoka, Japan, 17-20 October 2011. In i-Perception, 2011, v. 2 n. 8, p. 892en_US
dc.identifier.issn2041-6695-(electronic)-
dc.identifier.urihttp://hdl.handle.net/10722/165718-
dc.descriptionStudent Award Session-
dc.descriptionOpen Access Journal-
dc.description.abstractOur ability to maintain orientation to the upright is a result of multi-sensory integration, but little is known about how our subjective vertical interacts with our perceived world. We measured observers' subjective vertical in the same environment where we observed the Hong Kong Peak Tram Illusion. We tested whether the perceived tilt of a physically vertical building is a result of observers' misjudgment of their subjective vertical position. Six observers sat in the tram and held a stick on the bench to indicate their subjective vertical on both upward and downward trips. In a separate trip, they did the same measurement with eyes closed. An assistant marked the angle of the stick relative to gravity with a rotary pitch. Observers' reclining position, which matched with the slope of the mountain, was measured simultaneously by another pitch. We found observers' subjective vertical was biased away from gravitational vertical, which linearly increased with mountain slope. A blind-fold reduced this bias to half, suggesting visual information is crucial for our judgment of subjective vertical. However, observers' illusory tilt of buildings did not reflect the same trend, implying the illusion cannot be fully accounted for by observers' misjudgment of subjective vertical.-
dc.languageengen_US
dc.publisherPion Ltd.. The Journal's web site is located at http://i-perception.perceptionweb.com/journal/I/-
dc.relation.ispartofi-Perceptionen_US
dc.titleA multi-sensory illusion: Hong Kong Peak Tram illusion (II) - subjective verticalen_US
dc.typeConference_Paperen_US
dc.identifier.emailChow, HM: dorischm@hku.hken_US
dc.identifier.emailChiu, PH: chiuph@hku.hk-
dc.identifier.emailTseng, C: tseng@hku.hk-
dc.identifier.authorityTseng, C=rp00640en_US
dc.description.naturelink_to_OA_fulltext-
dc.identifier.hkuros209105en_US
dc.identifier.volume2en_US
dc.identifier.issue8en_US
dc.identifier.spage892en_US
dc.identifier.epage892en_US
dc.publisher.placeUnited Kingdom-
dc.description.otherThe 12th International Multisensory Research Forum (IMRF 2011), Fukuoka, Japan, 17-20 October 2011. In i-Perception, 2011, v. 2 n. 8, p. 892-

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