Effect of touching manner and motion direction of human finger on human tactile recognition
10 Nov 2009-pp 998-1003
TL;DR: It was found that the distinctive sensitivities of human tactile sensation in active-touch and passive-touch manners are different in discriminating betweenfine step-heights and that the directions of finger motion have little effect on the human tactile recognition of fine step- heights.
Abstract: The purpose of this paper is to investigate the effects of the touching manners and the motion directions of human finger in recognizing fine surface texture The authors developed a measurement system to present a step-height of 10 to 1000 µm to the finger of the human subject to measure the human tactile sensation capability The presentation device can control four parameters of the presentation, which are the step-height, the presentation velocity, the presentation angle, and the presentation temperature Human subjects actively and passively touched and distinguished the step-heights to determine the different thresholds for step-heights Also they passively touched and distinguished the step-heights with different motion directions of their fingers to determine the difference thresholds As the results of the psychophysical experiments, it was found that the distinctive sensitivities of human tactile sensation in active-touch and passive-touch manners are different in discriminating between fine step-heights and that the directions of finger motion have little effect on the human tactile recognition of fine step-heights
Citations
More filters
Journal Article•
TL;DR: A detailed analysis of the associated, promising state of the art techniques and the initial set of techniques used to realize the multimodal HCI interaction are presented, followed by the descriptions of implemented control algorithms and some first-hand experimental evaluation analysis.
Abstract: The smart furniture provide various services alone or by communication with other devices. The cost and time for building such devices is a barrier to the deployment of various novel applications. Since the smart devices are typically equipped with embedded or traditional computers, various sensors and multimodal I/O devices, it can provide various services in public spaces as well as in private spaces. The goal of our research was to introduce affordable techniques on how to build and model the acceptable multimodal HCIs and interactions with the environment all integrated in the mobile smart furniture device. In this paper we present a detailed analysis of the associated, promising state of the art techniques and the initial set of techniques we have used to realize the multimodal HCI interaction, followed by the descriptions of implemented control algorithms and some first-hand experimental evaluation analysis.
6 citations
Cites background from "Effect of touching manner and motio..."
...The effects of the touching manners and the motion directions of human finger in recognizing fine surface texture were investigated in [30]....
[...]
07 Mar 2012
TL;DR: To measure the human finger’s tactile sensation capability of recognizing a fine surface texture using psychophysical experiments, a computer-controlled measurement system that presents fine step-heights of 0 to 1000 μm to human subjects’ fingers at various presentation angles were developed.
Abstract: In this study, to measure the human finger’s tactile sensation capability of recognizing a fine surface texture using psychophysical experiments, a computer-controlled measurement system that presents fine step-heights of 0 to 1000 μm to human subjects’ fingers at various presentation angles were developed. The measurement system can control four parameters of fine step presentation, i.e., the step-height, presentation velocity, presentation angle, and presentation temperature. In psychophysical experiments of this study, the measurement system calculates the amounts of step-heights based on the Parameter Estimation by Sequential Testing (PEST) method (Taylor & Creelman, 1982) and presents the step-heights to subjects’ fingers in order to measure difference thresholds and subjective equalities for fine step-heights. Those values are considered to be the fine step-height discrimination capability of finger’s tactile sense.
2 citations
Cites background from "Effect of touching manner and motio..."
...Furthermore, the authors developed a measurement system that can create fine step-heights of 0 to 1000 µm and present the step-heights to subjects’ fingers at various presentation angles (Kawamura et al., 2009)....
[...]
...Furthermore, the authors developed a measurement system that can create fine step-heights of 0 to 1000 μm and present the step-heights to subjects’ fingers at various presentation angles (Kawamura et al., 2009)....
[...]
TL;DR: It is found that the step’s presentation angle has an influence on the human tactile sensation capability in recognizing fine step-heights and the mechanism of the directionality is discussed.
Abstract: The purpose of this study is to investigate the directionality of the tactile sensation capability of human fingertip in recognizing fine step-heights of about 10 μm and discuss the mechanism of the directionality. We have developed a measurement system that presents a step-height to a subject fingertip and measures the human tactile sensation capability. The presentation device can control four parameters of the presentation, which are the step-height, the presentation velocity, the presentation angle, and the presentation temperature. In this paper, to investigate the finger’s tactile sense directionality, we conducted two kinds of psychophysical tests. In the tests, the step-heights of about 10 μm with three different presentation angles of 0, 45 and 90 degrees are used as the presentation stimuli. In the first psychophysical test, human subjects touch and distinguish, using the center of their fingertips, each pair of the step-heights that have the same presentation angles, 0 vs. 0, 45 vs. 45 and 90 vs. 90 degrees. In the other test, they distinguish each pair of the step-heights that have the different presentation angles, 0 vs. 0, 0 vs. 45 and 0 vs. 90 degrees. From these psychophysical tests, the difference thresholds and subjective equalities for the step-heights are determined and the relationship between the fine-step’s presentation angle and the fingertip’s tactile sensation is revealed. As a result, it is found that the step’s presentation angle has an influence on the human tactile sensation capability. In addition, the mechanism of the fingertip’s tactile sense directionality is discussed.
Cites background from "Effect of touching manner and motio..."
...In the subsequent investigations of the directionality of the fingertip’s tactile sense [5, 12], the authors have noticed that humans control a motion direction of their fingers when they perceive subtle surface roughness, and have made a hypothesis that “humans choose the touch-motion direction of their fingers to increase the sensitivity of the finger’s tactile sense and recognize the surface roughness or smoothness more precisely”....
[...]
26 Sep 2020
TL;DR: In this paper, an experimental device for vibration and tactile perception is developed based on LabVIEW technologies, which can control the vibration intensity, time interval and sequence of five vibration sources.
Abstract: The tactile sensing and interaction technologies mimicking human skin and sensor mechanisms are a highly demanded research in both theories and applications. This paper presents the design of an experimental system for sensing the tactile vibration sensations by mimicking human skin. An experimental device for vibration and tactile perception is developed based on LabVIEW technologies, which can control the vibration intensity, time interval and sequence of five vibration sources. By specifying a set of psychophysical parameters on the device, a series of vibration and tactile experiments are carried out on fingers, arms, abdomen and other parts of the body. The tactile perceptions on vibration mechanisms have been tested by different vibration intensity, sequence, and interval. The experimental results have enabled applications in tactile perception and interaction interfaces towards a portable blind guide system.
References
More filters
TL;DR: In this article, an adaptive procedure for rapid and efficient psychophysical testing is described, with maximally efficient trial-by-trial sequential decisions at each stimulus level, in a sequence which tends to converge on a selected target level.
Abstract: An adaptive procedure for rapid and efficient psychophysical testing is described. PEST (Parameter Estimation by Sequential Testing) was designed with maximally efficient trial‐by‐trial sequential decisions at each stimulus level, in a sequence which tends to converge on a selected target level. An appendix introduces an approach to measuring test efficiency as applied to psychophysical testing problems.
1,205 citations
Journal Article•
TL;DR: The relationship between the stimulus amplitude and perceived intensity during sustained skin indentations did not match the corresponding stimulus response functions of SA units suggesting non-linear transformations within the central nervous system.
Abstract: Recordings from single peripheral nerve fibres made it possible to analyse the functional properties of tactile afferent units supplying the glabrous skin of the human hand and to assess directly the relation between impulse discharge and perceptive experiences. The 17,000 tactile units in this skin area of the human hand are of four different types: two fast adapting types, FA I and FA II (formerly RA and PC), and two slowly adapting types, SA I and SA II. The receptive field characteristics and the densities in the skin of the type I units (FA I and SA I) indicate that these account for the detailed spatial resolution that is of paramount importance for the motor skill and the explorative role of the hand. The relationship between the stimulus amplitude and perceived intensity during sustained skin indentations did not match the corresponding stimulus response functions of SA units suggesting non-linear transformations within the central nervous system. These transformations, in turn, appear to vary between subjects. A single impulse in a single FA I unit may be felt when originating from the most important tactile regions of the hand, indicating that the psychophysical detection may be set by the threshold of the sense organs. Moreover, no significant noise seems to be superimposed in the respective central sensory pathways.
845 citations
Book•
01 Oct 1984
TL;DR: The problems of psychophysics, the scientific study of the relationship between stimulus and sensation, constitute some of the most basic problems of modern psychology as discussed by the authors, and this book introduces students to the fundamentals of classical and modern psychophysical problems.
Abstract: The problems of psychophysics -- the scientific study of the relationship between stimulus and sensation -- constitute some of the most basic problems of modern psychology This book introduces students to the fundamentals of classical and modern psychophysics
392 citations
TL;DR: The results were consistent with the notion that visual ceding of tactual stimuli is not advantageous (or necessary) for texture perception, since touch may hold advantages for the detection of the smoothness of surfaces.
Abstract: The purpose of the present study was to evaluate the utility of visual imagery for texture perception. In Experiment 1, sighted, early-blind, and late-blind observers made relative smoothness judgments of abrasive surfaces using active or passive tough. In Experiment 2, subjects compared vision and touch in the accuracy of smoothness detection, using a broad range of textures, including very fine surfaces. No differences appeared between the sighted and the blind, and it did not matter if touch were active or passive. Vision and touch showed similar performance with relatively coarse textures, but touch was superior to vision for much finer surface textures. The results were consistent with the notion that visual coding of tactual stimuli is not advantageous (or necessary) for texture perception, since touch may hold advantages for the detection of the smoothness of surfaces.
174 citations
"Effect of touching manner and motio..." refers background in this paper
...SA I can perceive a pattern like Braille dots [3]....
[...]
103 citations
"Effect of touching manner and motio..." refers methods in this paper
...Taylor and Creelman developed the PEST (Parameter Estimation by Sequential Testing) method [10]....
[...]