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Figure 2-11: Record Screen (Plot View)
2.3.8.2 Record Screen Main Functions (Gaze View and Plot View)
Stops the recording of data to the EDF file.
Keyboard Shortcuts: ESC = Stop Recording
Abort the trial recording.
Keyboard Shortcuts: CTRL + ALT + A = Abort Trial
Instead of showing the gaze cursor, plots the x, y eye data
being acquired as a function of time.
Keyboard Shortcuts: G = toggle between Gaze Cursor and Plot Views
Performs online Drift Check or Drift Correct from the
Record screen when Video Overlay mode is enabled. This
button is not always present.
Keyboard Shortcuts: F = perform on-line calibration accuracy check
2.3.8.3 Buttons Used in the Plot View
The top of the Plot View shows the data type being plotted. The “Gaze” option
plots the subject's gaze position in pixel (x, y) display coordinate. The “Angle”
options plots the amount of x, y eye angle in degrees relative to the center of the
screen. The “HREF” plots eye rotation angles relative to the head in HREF
coordinate (see Section 4.4.2.2 “HREF”). The “Raw” option plots the raw (x, y)
coordinate pairs from the camera. The “Analog” option plots the x, y coordinate
in voltages output as done with the analog card output. The top-right lists the
speed of plot (i.e., amount of data being plotted in each screen). For example,
Figure 2-11 illustrates a recording screen with a plotting speed of 6-seconds per
sweep. Each horizontal grid in the plot represents 500-ms worth of data.
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