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Title:
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A COMPARATIVE EVALUATION OF COLOR BLINKING AND ELECTRO-TACTILE IMAGING OF HIDDEN GRAPHS |
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Author(s):
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Tatiana G. Evreinova , Grigori Evreinov , Roope Raisamo |
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ISBN:
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978-972-8924-59-1 |
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Editors:
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Katherine Blashki |
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Year:
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2008 |
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Edition:
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Single |
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Keywords:
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Graph grasping creativity, visually challenged people, directional-predictive signals |
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Type:
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Full Paper |
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First Page:
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109 |
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Last Page:
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116 |
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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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Developing special educational tool could facilitate accessing graphical information on PDA and desktop platforms for
visually challenged users. We measured and compared the performance of ten blindfolded subjects with touch tablet
where the stylus movements were augmented with color-blinks or electro-tactile signals stimulating transcutaneously the
visual analyzer of participants when inspecting invisible graphic images. The performance was evaluated in terms of the
both feedbacks used and the time spent to complete non-visual inspection of hidden graphs taking into account
exploration behavior and the capture radius. Although the use of color blinking signals appeared to be more beneficial in
this task, the electro-tactile signals might positively further grasping the primitive and composite attributes of the
simulated graphic entities once the perceptible quality of the phosphene sensations elicited during electro-tactile
stimulation of the retinal area had been bettered. |
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