Category Archives: Eye Tracking

3d Heatmap

My eye-data extraction program needed some upgrading and bug fixing.  What it does is read a series of datafiles produced by SMI Vision’s IviewX eye tracking software and displays the gaze data.   It scans each selected trial on each selected … Continue reading

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Posted in Eye Tracking, Programming in general | Leave a comment

Two dimensional ANOVA- can it be done, and would you want to?

In this post I am going to try to answer the questions above.  Regarding the first question, I’ll explain where the question began for me.  Then, I will review the meaning of the terms Variance and Standard Deviation, and review … Continue reading

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Posted in Eye Tracking, Statistics | Tagged , , , , , | 14 Comments

Spectacular data on its way…

If the patterns we’re getting with our first 8 participants hold out, Anton & I shall have some spectacular data with the eye-tracker to post sometime next week.   The tracker, in combination with the method is showing that people do … Continue reading

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Posted in Eye Tracking, Learning Theory | 1 Comment

Next step: Confirming the eye-positioning as a CR

I’ve modified the game so that there are now two versions.  One version has the US appear on the left between the red lines (red lines will not be shown in the game) and the other will have the US … Continue reading

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Eye Tracking–What to do with missing data?

After some piddling with my program, I had it count missing data.  I had about 20,000 points missing out of the half-million or so that I’m using.  In short, about 4% of my data points were invalid (1% to 7% … Continue reading

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Eye Tracking—Stuff that makes you crazy… >8-/

When I read in the raw data, I check each point to check if it is valid and flag it if there is a problem.  Sometimes the tracker will lose the eyes, so during any period of measurement there is … Continue reading

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Eye Tracker–Pupils revisited.

For a quick overview for those just joining, I am examining the results of an experiment on latent inhibition using a video-game method by developing a tool to rapidly view and group the eye-tracking data.  Some of the data I’ve … Continue reading

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Posted in Eye Tracking, The Learning Game | Leave a comment