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Title:
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EXPOSING REPETITIVE SCANNING IN EYE MOVEMENT SEQUENCES WITH T-PATTERN DETECTION |
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Author(s):
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Marcus Mast, Michael Burmester |
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ISBN:
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978-972-8939-52-6 |
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Editors:
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Katherine Blashki |
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Year:
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2011 |
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Edition:
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Single |
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Keywords:
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Eye movement, eye tracking, scanpath, sequence analysis, T-pattern |
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Type:
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Full Paper |
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First Page:
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137 |
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Last Page:
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145 |
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Language:
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English |
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Cover:
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Full Contents:
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click to dowload 
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Paper Abstract:
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When analyzing eye movement it can be of interest to identify common ground in gaze sequences, for example to find cross-person similarities in the way people scan or to investigate scanning habits of a single person repeatedly exposed to a stimulus. Measuring and exposing such similarities is challenging from a methodological perspective, as the spatial and temporal dimensions have to be considered simultaneously. Techniques like string-editing can measure the similarity of gaze sequences but techniques for exposing the actual similarity are not yet established. In this paper, we propose the T-pattern technique (Magnusson, 2000) for the analysis of spatiotemporal eye movement data and describe its application. The technique has the ability to extract recurrent patterns of visual scanning from real-time region-coded fixation sequences. Extracted patterns can be qualitatively examined, allowing to derive hypotheses on the underlying cognitive processes of viewers. The technique also provides metrics for the repetitiveness of visual scanning, allowing for quantitative comparisons between experimental groups. |
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