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Keith Karn

Industrial Design/Human Interface Department
Xerox Corporation
1350 Jefferson Road, Mail Stop 0801-10C
Rochester, NY 14623 USA
Office phone: 716-427-1561
Office fax:

Email: keith.karn at xerox dot com
Home page:




Change Detection Research Interests
The change blindness phenomenon suggests that visual representations retained across saccades are very limited. In work with Mary Hayhoe (University of Rochester, Center for Visual Science) we seek to specify the kind of information that is in fact retained. We have investigated targeting performance for saccadic eye movements, since one need for visual representations across eye and body positions may be to guide coordinated movement. We examine saccades in the context of ongoing sensory motor tasks in order to make stronger generalizations about natural visual functioning and deployment of attention. Data from our recent research indicates that spatial information about visual targets is retained across eye movements and used to guide subsequent movements.

Other Research Interests
human factors / ergonomics, human-computer interaction design, usability testing, product design

Change Detection Publications
Moller P., Karn K., Hayhoe M., Albano J., & Ballard D. (in preparation) Spatial memory and the accuracy of saccades to remembered visual targets.

Hayhoe, M., Karn, K., Magnuson, J. and Mruczek, R. (in press, 2001) Spatial representations across fixations for saccadic targeting. Psychologia Belgica.

Karn, K. & Hayhoe, M. (2000) Memory representations guide targeting eye movements in a natural task. Visual Cognition. 7:673-703.

Karn, K., Moller, P., & Hayhoe, M. (1997) Reference frames in saccadic targeting. Experimental Brain Research, 115:267-282.

Karn, K. & Zelinsky, G. (1996) Driving and dish washing: Failure of the correspondence metaphor for memory. Behavioral and Brain Sciences 19:198.

Karn K., Lachter J., Moller P. & Hayhoe M. (1994) Task dependent spatial memory across saccades. Behavioral and Brain Sciences. 17:267-268.

Karn K., Moller P. & Hayhoe M. (1993) Precision of the eye position signal. In: Perception and Cognition: Advances in Eye Movement Research. G. d'Ydewalle & J. Van Rensbergen (Eds.), 71-82. Amsterdam, North-Holland.



Last updated: January 4, 2001
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