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In this study we want to address the question to what extent the visual and the haptic modalities contribute to the final formation of a complex multisensory perceptual space. By varying three shape parameters a physical shape space of shell-like objects was generated. Participants were allowed to either see or touch the objects or use both senses to explore the objects. Similarity ratings were performed...
In the present study we investigated the influence of the sensory modality of information on the perceived roughness of unfamiliar textures. Subjects were instructed to judge the roughness of embossed dot patterns with varying inter-dot spacing in a visual, haptic or a visual-haptic combined information condition. Our results indicate that the relationship of inter-dot spacing and roughness perception...
We show that vibrotactile feedback displayed through the steering wheel of a car can reduce the perceptual and cognitive load of the driver, leading to less distraction and fewer navigation errors. To demonstrate the concept, two vibration motors are mounted onto the steering wheel of a driving simulator and driving experiments are performed in virtual environments under two different sensory conditions...
This preliminary study investigated behaviorally the performance of a sample of young twins in a set of classical visuomotor tasks. The assessment was carried out using a small haptic interface used to produce force and record the hand trajectory during the execution of tasks requiring rapid and precise movements. The aim of the study was to evaluate the sensorimotor development across a wide age-range...
This paper describes investigation on the effectiveness of the haptic feedback in science education, involving 8th grade middle school students. For that study haptically enhanced presentations of the Coriolis Effect have been created based on MPEG-4 framework allowing creating, transmitting and displaying haptically enhanced multimedia educational contents. A special focus of the work is the comparison...
In the present study, a vibrotactile feedback device for spatial guidance was evaluated in a tracking task paradigm. Participants (N = 18) had to translate and rotate virtual objects according to the vibrotactile vs. verbal cues without visual information. Both types of spatial guidance were evaluated using objective performance data (i.e. speed, accuracy) as well as subjective judgments. Results...
The present study investigated the use of visual trajectory and haptic force information in learning concepts involving force. Specifically, learning modules for instructing buoyant forces were developed for use with a computer monitor and a force feedback device. Students from an elementary school at the fourth and sixth grades were recruited to participate in the study. The students were separated...
We propose extending the concept of spatial constancy to haptic perception. In vision, spatial constancy refers to the conversion of retinotopic signals into spatiotopic representations, allowing the observer to perceive space independently of his or her own eye movements, or at least partly so. The problem would seem at least as important in haptic perception, where sensory surfaces undergo even...
This paper proposes a new interactive interface TAXEL, which aims at developing a reconfigurable self-morphing visio-haptic interface. We first present the overall architecture and concept of a self-morphing visuo-haptic interface. Key hardware components are developed and tested, including three tactile actuators using a piezoelectric active linear actuator, a passive MR fluid actuator, and a thin...
Neural connections in the brain are arranged in dense, complex networks of filiform (i.e. thread-like) structures. Navigation along complex filiform networks entails problems including path following, path selection at complex branching nodes, and the combination of large-scale with fine-scale exploration. This work proposes haptic interaction techniques to aid in the navigation along such complex...
The perception of tactile motion is essential for our daily interaction with objects. Tactile motion perception has been studied by using stimuli featuring real or apparent motion. Research on tactile apparent motion has conventionally manipulated the perceived direction of the motion using 2 non-repeating or more than 2 repeating stimuli. Here, we report the modulation of perceived motion direction...
Virtual Reality (VR) technology has great potential as a tool for training. Remote haptic virtual environments (VE) allow multiple users to interact in the same virtual space to accomplish tasks. Combining these ideas, it is possible to apply a remote VE to connect skilled trainers with remote trainees for training. In this paper we examined guided haptic training as an interaction method where one...
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