Home // International Journal On Advances in Intelligent Systems, volume 12, numbers 3 and 4, 2019 // View article
Authors:
Yoshihiko Nomura
Shinichi Inagaki
Norihiko Kato
Tokuhiro Sugiura
Keywords: slippage perception; tactile interface; stroke reproduction; training and learning; preferred and non-preferred hand assignment
Abstract:
The goal of this paper is to establish an intensive training procedure for improving subjects’ tactile-motor performance for an active wheel-based finger tactile interface. The methodology for achieving the goal is to propose a training procedure, and to show perceptual learning characteristic improvements as a result of the intensive training. Concretely, subjects repeated a tactile-motor learning trial composed of slippage perceptions and a stroke reproduction. That is, a learning trial is constituted of four steps: (1) a target hand-stroke, i.e., a uniform motion, is presented as a slippage by the active-wheel-based finger-tactile interface, (2) a subject reproduces the slippage as a hand-stroke, (3) accepting the slippage corresponding to the subject-reproduced stroke, the subject improves their slippage sensitivity, (3) accepting the initial slippage corresponding to the target hand-stroke, the subject furthermore improves their slippage sensitivity. The training had been conducted for eight days, three sessions a day, 16 learning trial a session. The findings were as follows. As a result of a psychophysical experiment involving an intensive eight-day training, users significantly improved their slippage-perception and stroke-reproduction ability. The 1st day training doubled the perceptual sensitivities: the sensitivities were defined by a ratio of an estimated slope to the standard error with respect to the reproduced stroke speed and time-duration, and that was defined by the standard deviations with respect to the reproduced stroke angular error. Furthermore, the intensive eight-day training made the speed-perceptual sensitivity two-times better than those after the 1st day training. Thus, a significant learning effect was observed, and, consequently, the effectiveness of the proposed training procedure was confirmed.
Pages: 220 to 228
Copyright: Copyright (c) to authors, 2019. Used with permission.
Publication date: December 30, 2019
Published in: journal
ISSN: 1942-2679