Haptic subitizing across the fingers

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Haptic subitizing across the fingers

Numerosity judgments of small sets of items (≤ 3) are generally fast and error free, while response times and error rates increase rapidly for larger numbers of items. We investigated an efficient process used for judging small numbers of items (known as subitizing) in active touch. We hypothesized that this efficient process for numerosity judgment might be related to stimulus properties that ...

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The authors consider the detection of small surface features, such as cracks, bumps, and ridges, on the surface of an object during haptic exploration and dexterous manipulation. Surface feature definition and detection are essential for intelligent haptic exploration and modeling of unknown objects. First, the authors review the representation of object surface geometry and present definitions...

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A system with direct manipulation environment is proposed. A user is allowed to use both of his/her hands to manipulate virtual objects in the simulated virtual world. 3D graphical displays with 3D virtual hands represented the user's real hands in the virtual world showing the manipulation works in the virtual world to the user. The 3D virtual hands move corresponding to the behavior of the re...

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Effects of using multiple hands and fingers on haptic performance.

It remains controversial whether using two hands and multiple fingers provides any perceptual advantage over a single index finger. The present study examines this long-running question in the haptic-exploration literature by applying rigorous, psychophysical, and mathematical modeling techniques. We compared the performance of fourteen blindfolded sighted participants on seven tactile-map task...

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Haptic interfaces are devices that allow human-machine interaction through force and touch. Combined haptic and visual interfaces have been around for decades. Yet, despite an enormous increase in research activity in the last few years, the science of haptics is still a technology in its infancy. The majority of commercially available haptic devices operate based on a principle of point intera...

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ژورنال

عنوان ژورنال: Attention, Perception, & Psychophysics

سال: 2011

ISSN: 1943-3921,1943-393X

DOI: 10.3758/s13414-011-0124-8