Book ChapterDOI
Just noticeable differences of low-intensity vibrotactile forces at the fingertip
Christian Hatzfeld,Roland Werthschützky +1 more
- pp 43-48
TLDR
In this paper, the authors measured JNDs of vibrotactile force amplitudes at nine frequencies in the bandwidth of 5... 1000 Hz with 29 subjects taking part in the study.Abstract:
The presented study measures JNDs of vibrotactile force amplitudes at nine frequencies in the bandwidth of 5 ... 1000 Hz with 29 subjects taking part in the study. Reference stimuli are placed near the absolute perception threshold of these frequencies, therefore very high discrimination thresholds of 20 dB on average (with a runaway value of 40 dB @ 1000 Hz) are measured. This is in accordance to observations of Weber's Law for reference stimuli near the perception threshold. Statistical analysis suggests influence of fingertip size on the results, but no influence of fine motor activity (i.e. playing musical instruments, handicraft, computer games) could be asserted with the given dataset. Results can be used to facilitate task-specific design of sensors and actuators in near-threshold contact situations.read more
Citations
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Journal ArticleDOI
Toward Haptic Communications Over the 5G Tactile Internet
TL;DR: This survey focuses on how the fifth generation of mobile networks will allow haptic applications to take life, in combination with the haptic data communication protocols, bilateral teleoperation control schemes and hapticData processing needed.
Book
Experimentelle Analyse der menschlichen Kraftwahrnehmung als ingenieurtechnische Entwurfsgrundlage für haptische Systeme
TL;DR: In this article, the authors present an analysis of haptischen Wahrnehmungs in the context of the Deutschen Forschungsgemeinschaft (DFG) gefordert.
Book ChapterDOI
Haptics as an Interaction Modality
TL;DR: The goal of this chapter is to provide a common basis to describe interactions and to convey a basic understanding of perception, and the description via psychophysical parameters.
Journal ArticleDOI
Vibrotactile Force Perception – Absolute and Differential Thresholds and External Influences
TL;DR: Fingertip size and motor skill are not able to explain effects on thresholds and the interpersonal variance, and ANOVA finds frequency as significant medium effect for both absolute and differential thresholds.
Dissertation
Sensory enhancement : a pilot perceptual study of subdermal magnetic implants
TL;DR: The overall purpose of this research is to utilise this concept in high stress scenarios, such as driving or piloting; whereby alerts and warnings could be relayed to an operator without intruding upon their other (typically overloaded) exterior senses.
References
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Book
Psychophysics: The Fundamentals
TL;DR: The theory of signal detection has been studied extensively in the literature, see as mentioned in this paper for an overview. But the application of TSD is limited to the measurement of sensory attributes and discrimination scales.
Journal ArticleDOI
Adaptive procedures in psychophysical research.
TL;DR: The general development of adaptive procedures is described, and typically, a threshold value is measured using these methods, and, in some cases, other characteristics of the psychometric function underlying perceptual performance, such as slope, may be developed.
Journal ArticleDOI
Perception-Based Data Reduction and Transmission of Haptic Data in Telepresence and Teleaction Systems
TL;DR: The experimental results show that the presented approach is able to reduce the packet rate between an operator and a teleoperator by up to 90% of the original rate without affecting the performance of the system.
Journal ArticleDOI
Diminutive Digits Discern Delicate Details: Fingertip Size and the Sex Difference in Tactile Spatial Acuity
TL;DR: It is shown here that tactile perception improves with decreasing finger size, and that this correlation fully explains the better perception of women, who on average have smaller fingers than men.
Journal ArticleDOI
Matching Forces: Constant Errors and Differential Thresholds
TL;DR: A contralateral limb-matching procedure was used to study the perception of forces generated by the elbow flexor muscles, and subjects consistently overestimated the amplitude of the two lowest forces, and the most accurate matching of forces occurred in the middle of the response range.