I have collected the eye movement while reading 4 lines texts using eyelink 1000. How can I calculate the counts of progressive saccade and regressive saccade in each interest area? Which parameters in the Data Viewer can I use?
Thanks.
Should be easily doable with the Saccade Report. For each saccade you can pull out the direction (progressive vs. regressive), the interest area that it came from, and the interest area that it went to; using those variables you can get (using Excel, R, etc.) the counts for each interest area (this depends a little on how you want to define "in each interest area", e.g., whether you're only counting saccades that remained within the interest area, or whether you're also counting saccades into this interest area from another interest area, or from this interest area into another interest area).
Should be easily doable with the Saccade Report. For each saccade you can pull out the direction (progressive vs. regressive), the interest area that it came from, and the interest area that it went to; using those variables you can get (using Excel, R, etc.) the counts for each interest area (this depends a little on how you want to define "in each interest area", e.g., whether you're only counting saccades that remained within the interest area, or whether you're also counting saccades into this interest area from another interest area, or from this interest area into another interest area).
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