Simple gaze analysis and special design of a virtual Morris water maze provides a new method for differentiating egocentric and allocentric navigational strategy choice

Sharon A Livingstone-Lee, Sonja Murchison, Philip M Zeman, Mehul Gandhi, Dustin van Gerven, Lauren Stewart, Nigel J Livingston, Ronald W Skelton

Publikation: Bidrag til tidsskrift/Konferencebidrag i tidsskrift /Bidrag til avisTidsskriftartikelForskningpeer review

Abstract

We present a novel method of combining eye tracking with specially designed virtual environments to provide objective evidence of navigational strategy selection. A simple, inexpensive video camera with an easily built infrared LED array is used to capture eye movements at 60Hz. Simple algorithms analyze gaze position at the start of each virtual maze trial to identify stimuli used for navigational orientation. To validate the methodology, human participants were tested in two virtual environments which differed with respect to features usable for navigation and which forced participants to use one or another of two well-known navigational strategies. Because the environmental features for the two kinds of navigation were clustered in different regions of the environment (and the video display), a simple analysis of gaze-position during the first (i.e., orienting) second of each trial revealed which features were being attended to, and therefore, which navigational strategy was about to be employed on the upcoming trial.

OriginalsprogEngelsk
TidsskriftBehavioural Brain Research
Vol/bind225
Nummer1
Sider (fra-til)117-25
Antal sider9
ISSN0166-4328
DOI
StatusUdgivet - 20 nov. 2011

Emneord

  • Choice Behavior
  • Cues
  • Female
  • Fixation, Ocular
  • Humans
  • Male
  • Maze Learning
  • Nonlinear Dynamics
  • Orientation
  • Space Perception
  • User-Computer Interface
  • Young Adult

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