de.mpg.escidoc.pubman.appbase.FacesBean
English
 
Help Guide Disclaimer Contact us Login
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT

Released

Poster

Effects of regions on the orientation ability in virtual environments

MPS-Authors
http://pubman.mpdl.mpg.de/cone/persons/resource/persons84192

Schnee,  A
Department Human Perception, Cognition and Action, Max Planck Institute for Biological Cybernetics, Max Planck Society;

http://pubman.mpdl.mpg.de/cone/persons/resource/persons84883

Wiener,  JM
Max Planck Institute for Biological Cybernetics, Max Planck Society;

http://pubman.mpdl.mpg.de/cone/persons/resource/persons84072

Mallot,  HA
Department Human Perception, Cognition and Action, Max Planck Institute for Biological Cybernetics, Max Planck Society;

Locator
There are no locators available
Fulltext (public)
There are no public fulltexts available
Supplementary Material (public)
There is no public supplementary material available
Citation

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.


Cite as: http://hdl.handle.net/11858/00-001M-0000-0013-DD10-9
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.