Vibrotactile letter reading using a low-resolution tactor array

Yanagida, Yasuyuki; Kakita, M.; Lindeman, Robert W.; Kume, Yuichiro; Tetsutani, Nobuji

doi:10.1109/haptic.2004.1287227

Cited by 62 publications

(52 citation statements)

References 16 publications

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“…It is difficult to compare accuracy performance using the VHD with other devices since previous studies examining recognition of complex stimuli did not employ an active scanning method (see, e.g., Saida et al, 1982;Yanagida et al, 2004). However, when complex characters such as Japanese letters were presented sequentially (i.e., as if being written on the participant) accuracy performance was reported to be between 87% and 95% (in the Yanagida et al and Saida et al studies, respectively).…”

Section: Methodsmentioning

confidence: 99%

The virtual haptic display: A device for exploring 2-D virtual shapes in the tactile modality

Chan

Maucher

Schemmel

et al. 2007

Behavior Research Methods

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Section: Methodsmentioning

confidence: 99%

The virtual haptic display: A device for exploring 2-D virtual shapes in the tactile modality

Chan

Maucher

Schemmel

et al. 2007

Behavior Research Methods

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“…In our own work, we have looked at determining the limits of perception of the human back in terms of vibration intensity and location discrimination [11], as a means for directing the user's gaze for predominantly visual search tasks [12], and as a way of conveying information by way of strokes for writing letters [22].…”

Section: Tactile Cuing For Spatial Awarenessmentioning

confidence: 99%

Effectiveness of directional vibrotactile cuing on a building-clearing task

Lindeman

Sibert

Mendez-Mendez

et al. 2005

Proceedings of the SIGCHI Conference on Human Factors in Computing Systems

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This paper presents empirical results to support the use of vibrotactile cues as a means of improving user performance on a spatial task. In a building-clearing exercise, directional vibrotactile cues were employed to alert subjects to areas of the building that they had not yet cleared, but were currently exposed to. Compared with performing the task without vibrotactile cues, subjects were exposed to uncleared areas a smaller percentage of time, and cleared more of the overall space, when given the added vibrotactile stimulus. The average length of each exposure was also significantly less when vibrotactile cues were present.

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“…By stimulating tactors in sequence, it is possible to create recognizable percepts with forms as complex as alphanumeric characters, and indeed, research has shown this to be the most effective way to present such a stimulus set [24]. However, this work has largely focused on relatively sparse arrays, often relying on subjects constructing a representation of the shapes being displayed through simple repeated stimuli localization.…”

Section: 2mentioning

confidence: 99%

“…Tan suggests that this could be used to point out potential dangers on the road to drivers, or highlight important onscreen information for workers in safety critical environments such as air traffic control. Work has also focused on human abilities to recognize spatiotemporal patterns, either relying on the well-studied task of letter recognition [24], or using a customized set of stimulus patterns [16]. Research examining how information can be encoded in single vibrating elements has also developed apace.…”

Section: Introductionmentioning

confidence: 99%

Determining the Feasibility of Forearm Mounted Vibrotactile Displays

Oakley¹,

Kim²,

Lee³

et al.

2006 14th Symposium on Haptic Interfaces for Virtual Environment and Teleoperator Systems

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At first glance, multi-element forearm mounted vibrotactile displays would appear to have considerable potential as an output device for mobile computing. The devices are small, robust and discrete, and the body site both easily accessible and socially acceptable for such a purpose. However, due to the absence of a thorough account of vibrotactile perception, it is hard to determine their feasibility, or even what might form an appropriate arrangement of vibrating elements or tactors. We describe two studies intended to shed light on these issues. The first extends the localization literature relating to the forearm, and its results indicate that different spatial arrangements of tactors can result in substantially different levels of performance. The second study examines the influence of adjusting the size of the area of the skin experiencing a vibration with its perceived intensity. The results indicate a positive relationship between increased size and increased perceived intensity. Finally, the implications of these studies for the design of vibrotactile arrays are discussed.CR INTRODUCTIONIt has long been accepted that the skin, the largest organ in the body, has considerable potential as a conduit for information. Correspondingly, there is a substantial history of research investigating how it might be effectively utilized. This effort has led to the development of a wide variety of skin stimulation technologies, ranging from electrical to vibratory to pneumatic. Of these technologies, large scale vibrotactile displays, utilizing motor or transducer based vibrating elements, and considered either individually or in groups, have arguably been the most popular. The reasons for this are straightforward and easy to enumerate: they are simple to construct, small, cheap, robust, reliable, and consume modest amounts of power. Initial investigations with these displays during the 60's and 70's focused on sensory substitution, where the intention was that tactile stimuli could be used to represent otherwise absent visual or auditory cues to impaired users. To highlight one example from this era, rigorous empirical work on topics ranging from character recognition to the display of patterns representing the spatial aspects of visual scenes were conducted using various versions of TVSS [9], a system most typically incarnated as a 20 by 20 back mounted array of vibrating elements (or tactors). Beyond research with this laudable aim, more recent attention has begun to focus on the potential of vibrotactile stimuli in mobile computing scenarios. This is no doubt due to the dramatic rise of this domain during the last decade, in conjunction with a general recognition that non-visual cues have an important role to play in the interfaces to handheld or wearable computing devices [4], and, when compared to other types of haptic or tactile device, the practical suitability of vibrotactile displays to mobile environments.Tan [21] provides one of the earliest discussions of vibrotactile displays for mobile computing....

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Vibrotactile letter reading using a low-resolution tactor array

Abstract: Abstract

Cited by 62 publications

References 16 publications

The virtual haptic display: A device for exploring 2-D virtual shapes in the tactile modality

The virtual haptic display: A device for exploring 2-D virtual shapes in the tactile modality

Effectiveness of directional vibrotactile cuing on a building-clearing task

Determining the Feasibility of Forearm Mounted Vibrotactile Displays

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