The Physiological User's Response as a Clue to Assess Visual Variables Effectiveness

Authors:
Mickaë/l Causse;Christophe Hurter
Affiliations:
Inserm/ Imagerie cé/ré/brale et handicaps neurologiques UMR 825, Toulouse, France F-31059 and Université/ de Toulouse, UPS, Imagerie cé/ré/brale et handicaps neurologiques UMR ...;IHCS IRIT Toulouse, France F-31000 and Direction Technique de l Iinnovation DGAC/DSNA/DTI R&D, Toulouse, France F-31000
Venue:
HCD 09 Proceedings of the 1st International Conference on Human Centered Design: Held as Part of HCI International 2009
Year:
2009

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Abstract

The paper deals with the introduction of Bertin's visual variables in an ATC context. The ranking of the efficiency of these variables has been experimentally verified by Cleveland, however, no studies highlight the physiological correlates of this ranking. We analyzed behavioral, physiological and subjective data recorded on 7 healthy subjects facing a visual comparison task witch involve 5 selected visual characterizations (angle, text, surface, framed rectangles and luminosity). Results showed that the observed accuracy was coherent with Mackinlay ranking of visual variables. Psychophysiological and subjective measurements are also discussed.