| The role of visuohaptic experience in visually perceived depth. | |
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MedLine Citation:
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PMID: 19357346 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Berkeley suggested that "touch educates vision," that is, haptic input may be used to calibrate visual cues to improve visual estimation of properties of the world. Here, we test whether haptic input may be used to "miseducate" vision, causing observers to rely more heavily on misleading visual cues. Human subjects compared the depth of two cylindrical bumps illuminated by light sources located at different positions relative to the surface. As in previous work using judgments of surface roughness, we find that observers judge bumps to have greater depth when the light source is located eccentric to the surface normal (i.e., when shadows are more salient). Following several sessions of visual judgments of depth, subjects then underwent visuohaptic training in which haptic feedback was artificially correlated with the "pseudocue" of shadow size and artificially decorrelated with disparity and texture. Although there were large individual differences, almost all observers demonstrated integration of haptic cues during visuohaptic training. For some observers, subsequent visual judgments of bump depth were unaffected by the training. However, for 5 of 12 observers, training significantly increased the weight given to pseudocues, causing subsequent visual estimates of shape to be less veridical. We conclude that haptic information can be used to reweight visual cues, putting more weight on misleading pseudocues, even when more trustworthy visual cues are available in the scene. |
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Authors:
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Yun-Xian Ho; Sascha Serwe; Julia Trommershäuser; Laurence T Maloney; Michael S Landy |
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Publication Detail:
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Type: Journal Article; Research Support, N.I.H., Extramural; Research Support, Non-U.S. Gov't Date: 2009-04-08 |
Journal Detail:
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Title: Journal of neurophysiology Volume: 101 ISSN: 0022-3077 ISO Abbreviation: J. Neurophysiol. Publication Date: 2009 Jun |
Date Detail:
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Created Date: 2009-05-27 Completed Date: 2009-08-03 Revised Date: 2011-09-26 |
Medline Journal Info:
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Nlm Unique ID: 0375404 Medline TA: J Neurophysiol Country: United States |
Other Details:
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Languages: eng Pagination: 2789-801 Citation Subset: IM |
Affiliation:
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Department of Psychology, New York University, New York, NY 10003, USA. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Cues* Depth Perception / physiology* Feedback / physiology Humans Judgment Pattern Recognition, Visual / physiology* Photic Stimulation / methods Touch / physiology* Visual Fields / physiology* |
| Grant Support | |
ID/Acronym/Agency:
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EY-08266/EY/NEI NIH HHS; R01 EY008266-20/EY/NEI NIH HHS |
| Comments/Corrections | |
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