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Title:
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RAISED-DOT SLIDING LENGTH PERCEPTUAL CHARACTERISTIC |
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Author(s):
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Yoshihiko Nomura, Syed Muammar Najib Syed Yusoh, Kazuki Iwabu, Ryota Sakamoto |
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ISBN:
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978-972-8939-90-8 |
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Editors:
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Katherine Blashki |
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Year:
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2013 |
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Edition:
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Single |
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Keywords:
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Length perception, raised dots, cutaneous sensation, fingerpad, systematic error, random error |
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Type:
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Short Paper |
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First Page:
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321 |
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Last Page:
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326 |
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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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Introducing raised-dots on sliding pathway, the authors have studied some sliding length perceptual characteristics on fingerpad in the passive touch framework: the raised-dot pathway can be applied to computer-human interfaces for presenting physical-lines. A series of psychophysical experiments were carried out by using raised-dot planes with the interval of 3.1mm and with that of 30mm together with a without-dot plan. It was confirmed that the perceptual lengths were well formulated by a power law: the perceptual lengths were proportional to the power of both speed and length. The exponential constants with the length factor were a little less than 1: the value of 1 corresponds to the ideal linear relationships. While, the other ones with the speed factor were nearly 0 in negative: the value of 0 corresponds to the ideal undisturbed relationships. Then, it was found that the pathway length perceptual accuracies for the raised-dot planes were much superior to that for the flat plane as follows: (1) perceptual length contractions along with the actual-length increase (2) other perceptual length contractions along with the speed increase, and, furthermore, (3) perceptual length random errors. |
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