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  Path Integration and Visual Landmarks: Optimal Combination or Multiple Systems?

Zhao, M., & Warren, W. (2010). Path Integration and Visual Landmarks: Optimal Combination or Multiple Systems?. Poster presented at 51st Annual Meeting of the Psychonomic Society, St. Louis, MO, USA.

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Zhao, M1, Author              
Warren, WH, Author
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1Brown University, ou_persistent22              

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 Abstract: We tested two hypotheses about how path integration and visual landmarks are combined during human navigation. (1) The Bayesian integration hypothesis predicts that navigation will be determined by a weighted combination of information sources, with weights based on their individual reliability (Cheng et al., 2007); (2) the multiple-system hypothesis predicts that different information will dominate under different environmental conditions (Shettleworth & Sutton, 2005). Participants performed a triangle completion task in an ambulatory virtual environment. The visual landmarks were covertly shifted prior to the home-bound leg (by 15º to 135º). With local landmarks, participants followed the landmarks completely up to a 90º shift and then switched to rely on path integration at 135º. With distal landmarks, they primarily relied on path integration and ignored the landmarks. These findings indicate that path integration may function as a backup or reference system for navigation, rather than being optimally integrated with visual landmarks.

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 Dates: 2010-11
 Publication Status: Published in print
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Title: 51st Annual Meeting of the Psychonomic Society
Place of Event: St. Louis, MO, USA
Start-/End Date: 2010-11-18 - 2010-11-21

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Title: Abstracts of the Psychonomic Society
Source Genre: Proceedings
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Pages: - Volume / Issue: 15 Sequence Number: - Start / End Page: 133 Identifier: -