Abstract
The recording and analysis of eye movements are fundamental to a diverse set of research applications, including studies in which reading, visual search, and both overt and covert visuospatial attention are examined. Software tools supplied with commonly available eye-tracking equipment have generally been limited in functionality and nonextensible. Because of this dearth of available software, ILAB was createdto provide an extensible frame workfor analyzing various aspects of eye movements. The program consists of a series of open-source MATLAB functions. The program’s data structures keep raw data, analysis preferences, and analyzed data separate, thus maintaining data fidelity and promoting extensibility.
Article PDF
Similar content being viewed by others
References
Brainard, D. H. (1997). The Psychophysics Toolbox.Spatial Vision,10, 433–436.
Calkins, M. E., Katsanis, J., Hammer, M. A., &Iacono, W. G. (2001). The misclassification of blinks as saccades: Implications for investigations of eye movement dysfunction in schizophrenia.Psychophysiology,38, 761–767.
Cox, R. W. (1996). AFNI: Software for analysis and visualization of functional magnetic resonance neuroimages.Computers & Biomedical Research,29, 162–173.
Duchowski, A., Shivashankaraiah, V., Rawls, T., Gramopadhye, A., Melloy, B., &Kanki, B. (2000). Binocular eye tracking in virtual reality for inspection training. In A. T. Duchowski (Ed.),Eye Tracking Research & Applications (ETRA) Symposium (pp. 89–96). New York: ACM Press.
Fischer, B., Biscaldi, M., &Otto, P. (1993). Saccadic eye movements of dyslexic adults.Neuropsychologia,31, 887–906.
Frackowiak, R. S., Friston, K. J., Frith, C., &Dolan, R. (Eds.) (1997).Human brain function. San Diego: Academic Press.
Friston, K., Ashburner, J., Heather, J., Holmes, A., & Poline, J.-B. (1994–2002).Statistical parametric mapping. Wellcome Department of Imaging Neuroscience. Retrieved from http://www.fil.ion.ucl. ac.uk/spm.
Gitelman, D. R., Nobre, A. C., Parrish, T., LaBar, K. S., Kim, Y.-H., Meyer, J. R., &Mesulam, M. M. (1999). A large-scale distributed network for covert spatial attention: Further anatomical delineation based on stringent behavioral and cognitive controls.Brain,122, 1093–1106.
Gitelman, D. R., Parrish, T. B., Friston, K. J., &Mesulam, M.-M. (2002). Functional anatomy of visual search: Regional segregations within the frontal eye fields and effective connectivity of the superior colliculus.NeuroImage,15, 970–982.
Gitelman, D. R., Parrish, T. B., LaBar, K. S., &Mesulam, M.-M. (2000). Real-time monitoring of eye movements using infrared video-oculography during functional magnetic resonance imaging of the frontal eye fields.Neurolmage,11, 58–65.
Karn, K. S. (2000). ‘Saccade pickers’ vs. ‘fixation pickers’: The effect of eye tracking instrumentation on research. In A. T. Duchowski (Ed.),Proceedings of the Eye Tracking Research and Applications Symposium, (pp. 87–88). New York: ACM Press.
Karsh, R., &Breitenbach, F. W. (1983). Looking at looking: The amorphous fixation measure. In R. Groner, C. Menz, D. F. Fisher, & R. A. Monty (Eds.),Eye movements and psychological functions: International views (pp. 53–64). Hillsdale, NJ: Erlbaum.
LaBar, K. S., Mesulam, M.-M., Gitelman, D. R., &Weintraub, S. (2000). Emotional curiosity: Modulation of visuospatial attention by arousal is preserved in aging and early-stage Alzheimer’s disease.Neuropsychologia,38, 1734–1740.
Land, M. F., &Lee, D. N. (1994). Where we look when we steer.Nature,369, 742–744.
Pelli, D. G. (1997). The VideoToolbox software for visual psychophysics: Transforming numbers into movies.Spatial Vision,10, 437–442.
Rayner, K. (1995). Eye movements and cognitive processes in reading, visual search and scene perception. In J. M. Findlay, R. Walker, & W. Kentridge (Eds.),Eye movement research: Mechanisms, processes and applications. Studies in visual information processing (Vol. 6, pp. 3–22). New York: Elsevier.
Salvucci, D. D., &Goldberg, J. H. (2000). Identifying fixations and saccades in eye-tracking protocols. In A. T. Duchowski (Ed.),Proceedings of the Eye Tracking Research and Applications Symposium, (pp. 71–78). New York: ACM Press.
Suppes, P. (1990). Eye-movement models for arithmetic and reading performance. In E. Kowler (Ed.),Eye movements and their role in visual and cognitive processes (pp. 455–477). New York: Elsevier.
Widdel, H. (1984). Operational problems in analysing eye movements. In A. G. Gale & F. Johnson (Eds.),Theoretical and applied aspects of eye movement research (pp. 21–29). New York: Elsevier.
Williams, S. (2002).Free as in freedom. Cambridge, MA: O’Reilly.
Wooding, D. (1999).Eye movement equipment database. Retrieved June 14, 2002, from http://ibs.derby.ac.uk/emed/.
Author information
Authors and Affiliations
Corresponding author
Additional information
This work was supported by National Institute on Aging (NIA) Grant K23-AG00940 (to D.R.G.).
Electronic supplementary material
Rights and permissions
About this article
Cite this article
Gitelman, D.R. ILAB: A program for postexperimental eye movement analysis. Behavior Research Methods, Instruments, & Computers 34, 605–612 (2002). https://doi.org/10.3758/BF03195488
Received:
Accepted:
Issue Date:
DOI: https://doi.org/10.3758/BF03195488