Centralizing Bias and the Vibrotactile Funneling Illusion on the Forehead

Kerdegari, Hamideh; Kim, Yeongmi; Stafford, Tom; Prescott, Tony J.

doi:10.1007/978-3-662-44196-1_8

Cited by 16 publications

(9 citation statements)

References 17 publications

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“…Israr et al [15] present Tactile Brush, an interpolation concept for multiple tactile actuators arranged in a grid in order to purposefully generate a moving tactile funneling illusion, which simulates the feeling of a continuous motion with a single localization point even though multiple actuators are active at a time. Further work on the funneling illusion [18] shows that the spacing of actuators should be 2.5 cm or less on the forehead for the funneling illusion to occur for most users. HapticHead uses a spacing of at least 8 cm, so we do not expect the funneling illusion to arise.…”

Section: Tactile Displaysmentioning

confidence: 99%

Increasing Presence in Virtual Reality with a Vibrotactile Grid Around the Head

Kaul¹,

Meier²,

Rohs³

2017

Lecture Notes in Computer Science

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A high level of presence is an important aspect of immersive virtual reality applications. However, presence is difficult to achieve as it depends on the individual user, immersion capabilities of the system (visual, auditory, and tactile) and the concrete application. We use a vibrotactile grid around the head in order to further increase the level of presence users feel in virtual reality scenes. In a between-groups comparison study the vibrotactile group scored significantly higher in a standardized presence questionnaire compared to the baseline of no tactile feedback. This suggests the proposed prototype as an additional tool to increase the level of presence users feel in virtual reality scenes.

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Section: Tactile Displaysmentioning

confidence: 99%

Increasing Presence in Virtual Reality with a Vibrotactile Grid Around the Head

Kaul¹,

Meier²,

Rohs³

2017

Lecture Notes in Computer Science

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“…Following on from these field tests, and building on previous investigations of the psychophysics of head-mounted displays [33], [34], we conducted a series of psychophysical studies (e.g. [35]) to investigate how to best optimize haptic display signals to relay effective information to the user. These studies have informed the design of the tactile language as set out below.…”

Section: Head-mounted Vibrotactile Displaysmentioning

confidence: 99%

Head-Mounted Sensory Augmentation Device: Designing a Tactile Language

Kerdegari¹,

Kim

Prescott³

2016

IEEE Trans. Haptics

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Sensory augmentation operates by synthesizing new information then displaying it through an existing sensory channel and can be used to help people with impaired sensing or to assist in tasks where sensory information is limited or sparse, for example, when navigating in a low visibility environment. This paper presents the design of a 2nd generation head-mounted vibrotactile interface as a sensory augmentation prototype designed to present navigation commands that are intuitive, informative, and minimize information overload. We describe an experiment in a structured environment in which the user navigates along a virtual wall whilst the position and orientation of the user's head is tracked in real time by a motion capture system. Navigation commands in the form of vibrotactile feedback are presented according to the user's distance from the virtual wall and their head orientation. We test the four possible combinations of two command presentation modes (continuous, discrete) and two command types (recurring, single). We evaluated the effectiveness of this 'tactile language' according to the users' walking speed and the smoothness of their trajectory parallel to the virtual wall. Results showed that recurring continuous commands allowed users to navigate with lowest route deviation and highest walking speed. In addition, subjects preferred recurring continuous commands over other commands.

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“…1) [6] such as low-resolution tactile display. We previously investigated how to design our tactile interface worn on the forehead [14] to present useful navigational information as a tactile language [15]. Here, we use this tactile language to generate haptic guidance signals and compare this to audio guidance in the form of synthetic speech.…”

Section: Figmentioning

confidence: 99%

“…2) consists of an array of twelve ultrasound sensors (I2CXL-MaxSonar-EZ2 by MaxBotic), a tactile display composed of 7 tactors ( Fig. 2 (b)) [14], a sound card, a microcontroller unit and two small lithium polymer batteries (7.4 V) to provide the system power. Furthermore, five reflective passive markers were attached to the vibrotactile helmet surface ( Fig.…”

Section: Vibrotactile Helmetmentioning

confidence: 99%

Head-Mounted Sensory Augmentation Device: Comparing Haptic and Audio Modality

Kerdegari

Kim²,

Prescott

2016

Biomimetic and Biohybrid Systems

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Abstract. This paper investigates and compares the effectiveness of haptic and audio modality for navigation in low visibility environment using a sensory augmentation device. A second generation head-mounted vibrotactile interface as a sensory augmentation prototype was developed to help users to navigate in such environments. In our experiment, a subject navigates along a wall relying on the haptic or audio feedbacks as navigation commands. Haptic/audio feedback is presented to the subjects according to the information measured from the walls to a set of 12 ultrasound sensors placed around a helmet and a classification algorithm by using multilayer perceptron neural network. Results showed the haptic modality leads to significantly lower route deviation in navigation compared to auditory feedback. Furthermore, the NASA TLX questionnaire showed that subjects reported lower cognitive workload with haptic modality although both modalities were able to navigate the users along the wall.

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Centralizing Bias and the Vibrotactile Funneling Illusion on the Forehead

Cited by 16 publications

References 17 publications

Increasing Presence in Virtual Reality with a Vibrotactile Grid Around the Head

Increasing Presence in Virtual Reality with a Vibrotactile Grid Around the Head

Head-Mounted Sensory Augmentation Device: Designing a Tactile Language

Head-Mounted Sensory Augmentation Device: Comparing Haptic and Audio Modality

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