AI Article Synopsis
- The study introduces a new method that combines eye tracking technology with virtual environments to objectively determine how people select navigational strategies.
- A cost-effective setup, featuring a video camera and infrared LEDs, captures eye movements at a rate of 60Hz, allowing researchers to analyze gaze positions at the beginning of navigation trials.
- Participants were tested in two distinct virtual mazes with different navigational cues, revealing which environmental features were focused on, thus indicating which navigational strategy they were likely to use in each trial.
Article 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.
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| http://dx.doi.org/10.1016/j.bbr.2011.07.005 | DOI Listing |
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