HapThimble

Kim, Hwan; Kim, Min-Hwan; Lee, Woohun

doi:10.1145/2858036.2858196

Cited by 51 publications

(9 citation statements)

References 32 publications

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“…The addition of haptic feedback in VR has been shown to dramatically increase the user's sense of immersion [32]. For instance, vibrotactile gloves [18] stimulate the user's sense of touch, and force feedback and exoskeletons [5,15] or electrical muscle stimulation [21,22] stimulate the user's proprioceptive system.…”

Section: Introductionmentioning

confidence: 99%

Detecting Visuo-Haptic Mismatches in Virtual Reality using the Prediction Error Negativity of Event-Related Brain Potentials

Gehrke

Akman

Lopes

et al. 2019

Proceedings of the 2019 CHI Conference on Human Factors in Computing Systems

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Designing immersion is the key challenge in virtual reality; this challenge has driven advancements in displays, rendering and recently, haptics. To increase our sense of physical immersion, for instance, vibrotactile gloves render the sense of touching, while electrical muscle stimulation (EMS) renders forces. Unfortunately, the established metric to assess the effectiveness of haptic devices relies on the user's subjective interpretation of unspecific, yet standardized, questions. Here, we explore a new approach to detect a conflict in visuohaptic integration (e.g., inadequate haptic feedback based on poorly configured collision detection) using electroencephalography (EEG). We propose analyzing event-related potentials (ERPs) during interaction with virtual objects. In our study, participants touched virtual objects in three conditions and received either no haptic feedback, vibration, or vibration and EMS feedback. To provoke a brain response in unrealistic VR interaction, we also presented the feedback prematurely in 25% of the trials. We found that the early negativity component of the ERP (so called prediction error) was more pronounced in the mismatch trials, indicating we successfully detected haptic conflicts using our technique. The results can be understood as a first step towards ERPs as a potential metric of haptic immersion in VR. CCS CONCEPTS • Human-centered computing → Haptic devices; Virtual reality;

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Section: Introductionmentioning

confidence: 99%

Detecting Visuo-Haptic Mismatches in Virtual Reality using the Prediction Error Negativity of Event-Related Brain Potentials

Gehrke

Akman

Lopes

et al. 2019

Proceedings of the 2019 CHI Conference on Human Factors in Computing Systems

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“…It is similar to physical buttons and the amount of force is measured. With the help of force-depth curves, all kinds of haptic feedback rendered were analyzed and used for efficient operation [51].…”

Section: Wearable Haptic Devicesmentioning

confidence: 99%

An Application-Based Review of Haptics Technology

2021

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Recent technological development has led to the invention of different designs of haptic devices, electromechanical devices that mediate communication between the user and the computer and allow users to manipulate objects in a virtual environment while receiving tactile feedback. The main criteria behind providing an interactive interface are to generate kinesthetic feedback and relay information actively from the haptic device. Sensors and feedback control apparatus are of paramount importance in designing and manufacturing a haptic device. In general, haptic technology can be implemented in different applications such as gaming, teleoperation, medical surgeries, augmented reality (AR), and virtual reality (VR) devices. This paper classifies the application of haptic devices based on the construction and functionality in various fields, followed by addressing major limitations related to haptics technology and discussing prospects of this technology.

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“…More complex setups often involving articulated arms or external braking mechanisms [4]- [8] can reproduce higher fidelity haptics and render both tactile and kinesthetic feedback. Similarly, exoskeletons and gloves [9]- [11], or tilt platforms [12], [13] can produce large forces. These type of grounded approaches however require anchoring of the force in the environment requiring complex mechanical structures and adding bulk.…”

Section: A Related Workmentioning

confidence: 99%

Contact-free Nonplanar Haptics with a Spherical Electromagnet

Zárate

Langerak

Thomaszewski

et al. 2020

2020 IEEE Haptics Symposium (HAPTICS)

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In this paper we introduce a novel contact-free volumetric haptic feedback device. A symmetric electromagnet is used in combination with a dipole magnet model and a simple control law to deliver dynamically adjustable forces onto a hand-held tool. The tool only requires an embedded permanent magnet and thus can be entirely untethered. The force, however, while contact-free, remains grounded via the spherical electromagnet and relatively large forces (1N at contact) can be felt by the user. The device is capable of rendering both attracting and repulsive forces in a thin shell around the electromagnet. We report findings from a user experiment with 6 participants, characterizing force delivery aspects and perceived precision of our system. We found that users can discern at least 25 locations for repulsive forces.

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HapThimble

Cited by 51 publications

References 32 publications

Detecting Visuo-Haptic Mismatches in Virtual Reality using the Prediction Error Negativity of Event-Related Brain Potentials

Detecting Visuo-Haptic Mismatches in Virtual Reality using the Prediction Error Negativity of Event-Related Brain Potentials

An Application-Based Review of Haptics Technology

Contact-free Nonplanar Haptics with a Spherical Electromagnet

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