%0 Conference Proceedings %B EuroHaptics %D 2018 %T Improving Perception Accuracy with Multi-sensory Haptic Cue Delivery %A Dunkelberger, Nathan %A Bradley, Joshua %A Sullivan, Jennifer L. %A Israr, Ali %A Lau, Frances %A Klumb, Keith %A Abnousi, Freddy %A O'Malley, Marcia K. %E Prattichizzo, Domenico %E Shinoda, Hiroyuki %E Tan, Hong Z. %E Ruffaldi, Emanuele %E Frisoli, Antonio %X

This paper presents a novel, wearable, and multi-sensory haptic feedback system intended to support the transmission of large sets of haptic cues that are accurately perceived by the human user. Previous devices have focused on the optimization of haptic cue transmission using a single modality and have typically employed arrays of haptic tactile actuators to maximize information throughput to a user. However, when large cue sets are to be transmitted, perceptual interference between transmitted cues can decrease the efficacy of single-sensory systems. Therefore, we present MISSIVE (Multi-sensory Interface of Stretch, Squeeze, and Integrated Vibration Elements), a wearable system that conveys multi-sensory haptic cues to the user's upper arm, allowing for increased perceptual accuracy compared to a single-sensory vibrotactile array of a comparable size, conveying the same number of cues. Our multi-sensory haptic cues are comprised of concurrently rendered, yet perceptually distinct elements: radial squeeze, lateral skin stretch, and localized cutaneous vibration. Our experiments demonstrate that our approach can increase perceptual accuracy compared to a single-sensory vibrotactile system of comparable size and that users prefer MISSIVE.

%B EuroHaptics %I Springer International Publishing %C Pisa, Italy %V II %P 289-301 %8 June 13-16 %@ 978-3-319-93399-3 %G eng %> https://mahilab.rice.edu/sites/default/files/publications/dunkelberger%202018%20eurohaptics%20compressed.pdf %0 Conference Proceedings %B EuroHaptics %D 2018 %T The Rice Haptic Rocker: Comparing Longitudinal and Lateral Upper-Limb Skin Stretch Perception %A Clark, Janelle P. %A Kim, Sung Y. %A O'Malley, Marcia K. %E Prattichizzo, Domenico %E Shinoda, Hiroyuki %E Tan, Hong Z. %E Ruffaldi, Emanuele %E Frisoli, Antonio %X

Skin stretch, when mapped to joint position, provides haptic feedback using a mechanism similar to our sense of proprioception . Rocker-type skin stretch devices typically actuate in the lateral direction of the arm, though during limb movement stretch about joint angles is in the longitudinal direction. In this paper, human perceptual performance in a target-hitting task is compared for two orientations of the Rice Haptic Rocker. The longitudinal direction is expected to be more intuitive due to the biological similarities, creating a more effective form of haptic feedback. The rockers are placed on the upper arm, and convey the position of a cursor among five vertically aligned targets. The longitudinal orientation results in smaller errors compared to the lateral case. Additionally, the outer targets were reached with less error than the inner targets for the longitudinal rocker. This result suggests longitudinal stretch is more easily discerned than laterally oriented stretch.

%B EuroHaptics %I Springer International Publishing %C Pisa, Italy %V II %P 125-134 %8 06/2018 %@ 978-3-319-93399-3 %G eng %> https://mahilab.rice.edu/sites/default/files/publications/clark%202018%20eurohaptics%20reduced.pdf