Experimental Suite
Saccadic Eye Movements
Cite this paper: Agostino Gibaldi, Mauricio Vanegas, Peter J. Bex, Guido Maiello. Evaluation of the Tobii EyeX Eye tracking controller and Matlab toolkit for research, Behavior Research Methods, 2016, DOI: 10.3758/s13428-016-0762-9
Smooth Pursuit
Cite this paper: Agostino Gibaldi, Mauricio Vanegas, Peter J. Bex, Guido Maiello. Evaluation of the Tobii EyeX Eye tracking controller and Matlab toolkit for research, Behavior Research Methods, 2016, DOI: 10.3758/s13428-016-0762-9
Vergence Eye Movements
Cite this paper: Agostino Gibaldi, Mauricio Vanegas, Peter J. Bex, Guido Maiello. Evaluation of the Tobii EyeX Eye tracking controller and Matlab toolkit for research, Behavior Research Methods, 2016, DOI: 10.3758/s13428-016-0762-9
Visual Exploration
Cite this paper: Agostino Gibaldi, Mauricio Vanegas, Peter J. Bex, Guido Maiello. Evaluation of the Tobii EyeX Eye tracking controller and Matlab toolkit for research, Behavior Research Methods, 2016, DOI: 10.3758/s13428-016-0762-9
The script EXAMPLE_SALIENCY is the MATLAB code used for the measurement of visual exploration eye movements on an image. After having activated and initialized the Tobii EyeX, a window is opened via Psychotoolbox with a gray background. The window is first used to perform a 9PC, and next to display the image to be explored. The left and right eye position measured during the experiment are used to compute a bidimensional histogram from which we obtain the salient points on the image.
This code is provided as an example that can be easily modified by a user for their specific purposes. Regarding the calibration, the target position can be easily modified in the script, in order to take into account the different requirements of the experiment. Likewise, the code relative to the eye tracker is conceived to be easily integrated in a pre-developed code.