EYENAL Software

The ASL EYE_TRAC 6 of eye trackers includes our EYENAL™ and FIXPLOT™ software programs for analyzing and displaying the collected data. This software allows you to do the following:

Reduce data to a list of fixations

• A fixation is usually defined as a period of at least 100 msec during which the point of gaze does not change by more than 1-degree visual angle.
• Different researchers may have different opinions about the details of this definition (for example, they may want to define minimum fixation duration as somewhat less than 100 msec). For this reason all parameters in the ASL fixation algorithm are adjustable by the user.
• Each fixation in the list has a start time, duration, point of gaze coordinates and average pupil size diameter.
• Interfix duration is recorded and includes the time and distance between the beginning of a new fixation and the end of the previous fixation

Specify areas of interest (AOI)

An area of interest is a region of the scene that was viewed by the participant. These regions usually define some object or image component that is meaningful in terms of the research being done.

Match fixations with AOIs

Compute statistics relating fixations to AOIs

• Average amount of time spent viewing each AOI
• Number and duration of fixations in each AOI
• Probabilities of looking from one AOI to another
• Average over multiple participants or trials

Superimpose plot of fixation “scan path” over image viewed by participant

Display all fixations, any subset of fixations, or step wise sets of fixations (e.g. first 5, then next 5 etc.). Choose different symbols and colors for fixation indicators and different colors and line types for connecting lines. Display fixation point symbols with a size proportional to fixation duration. Superimpose multiple color coded sets of fixations from different participants or different trials. Shows areas of interest. Create bit map files for display in reports or slides.

All ASL 6000 series eye trackers include our EYENAL™ and FIXPLOT™ software programs for analyzing and displaying the collected data. This software allows you to do the following:

Display Raw Data

Reduce Data to a List of Fixations

Different researchers may have different opinions about the details of this definition (for example, they may want to define minimum fixation duration as somewhat less than 100 msec).  For this reason all parameters in the ASL fixation algorithm are adjustable by the user.
A fixation is usually defined as period of at least 100 msec during which point of gaze does not change by more than 1-degree visual angle.
Each fixation in the list has a start time, duration, point of gaze coordinates and average pupil diameter.
Interfix duration is recorded and includes the time and distance between the beginning of a new fixation and the
end of the previous fixation.

An area of interest is a region of the scene that the participant focused on.  These regions usually define some object or image component that is meaningful in terms of the research being done.