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  Effects of regions on the orientation ability in virtual environments

Schnee, A., Wiener, J., & Mallot, H. (2003). Effects of regions on the orientation ability in virtual environments. Poster presented at 6. Tübinger Wahrnehmungskonferenz (TWK 2003), Tübingen, Germany.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0013-DD10-9 Version Permalink: http://hdl.handle.net/21.11116/0000-0005-7B80-0
Genre: Poster

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 Creators:
Schnee, A1, 2, Author              
Wiener, JM, Author              
Mallot, HA, Author              
Affiliations:
1Department Human Perception, Cognition and Action, Max Planck Institute for Biological Cybernetics, Max Planck Society, ou_1497797              
2Max Planck Institute for Biological Cybernetics, Max Planck Society, ou_1497794              

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 Abstract: Hierarchical theories of human spatial memory propose that places are grouped together in regions that are represented at a higher level in a graph-like representation of space. In this project we study the dynamics of the formation of spatial memory, with special focus on the information about regions. At witch particular stage of memory formation is regional information used in spatial memory, compared to more detailed information like the exact positions of places within these regions. We hypothesize that regional information originates very early in the formation of spatial memory. To investigate this assumption we have created a virtual environment containing 16 objects of 4 distinct categories (animals, cars, owers and buildings). The objects were placed on a regular 4x4 grid within the environment. We created 2 experimental conditions that diered in the arrangement of the objects. While objects of the same semantic category were neighboring each other in the regionalized condition, the object positions were scrambled in the unregionalized condition. Subjects were randomly assigned to one of the two environments. In successive trials the subjects had to nd objects in the environment. They were instructed to approach the target-object as directly as possible. We recorded subjects trajectories and calculated an overshoot-value for all of the 32 successive trials. The overshoot-value was dened as the quotient of the traveled distance and the distance of the shortest possible path. By analyzing the overshootvalues as a function of the trials for both the experimental groups we monitored spatial learning. Results indicate faster learning in the regionalized environment as compared to the unregionalized environment. These results support our hypothesis that regional information is used in spatial memory very early. These regions allow to reduce the search area in spatial search tasks; as soon as a given landmark can be assigned to a certain environmental area, one can limit the search for this landmark to this area.

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 Dates: 2003-02
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: -
 Identifiers: BibTex Citekey: 2506
 Degree: -

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Title: 6. Tübinger Wahrnehmungskonferenz (TWK 2003)
Place of Event: Tübingen, Germany
Start-/End Date: 2003-02-21 - 2003-02-23

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Title: 6. Tübinger Wahrnehmungskonferenz: Sixth Perception Conference at Tübingen, TWK 2003
Source Genre: Proceedings
 Creator(s):
Bülthoff, HH1, Editor            
Gegenfurtner, KR, Editor            
Mallot, HA, Editor            
Ulrich, R, Editor
Wichmann, FA1, Painter            
Affiliations:
1 Max Planck Institute for Biological Cybernetics, Max Planck Society, ou_1497794            
Publ. Info: Kirchentellinsfurt, Germany : Knirsch
Pages: - Volume / Issue: - Sequence Number: - Start / End Page: 172 Identifier: ISBN: 3-927091-62-6