Results 141 to 150 of about 3,122 (172)
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Investigating the Effects of Intensity and Frequency on Vibrotactile Spatial Acuity
IEEE Transactions on HapticsVibrotactile devices are commonly used in applications for sensory substitution or to provide feedback in virtual reality. An important aspect of vibrotactile perception is spatial acuity, which determines the resolutions of vibrotactile displays on the skin.
Paul H Dietz +2 more
exaly +3 more sources
Frequency-Specific Masking Effect by Vibrotactile Stimulation to the Forearm
2016This paper demonstrates frequency-specific masking of tactile sensations on the index finger by remote vibrotactile stimulation. A vibration of 50 Hz was presented to the index finger. In three experimental conditions, the detection threshold for this vibration was determined with a masking vibration presented to the forearm of 50Hz (the same frequency)
Yoshihiro Tanaka +5 more
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Neural Categorization of Vibrotactile Frequency in Flutter and Vibration Stimulations: An fMRI Study
IEEE Transactions on Haptics, 2016As the use of wearable haptic devices with vibrating alert features is commonplace, an understanding of the perceptual categorization of vibrotactile frequencies has become important. This understanding can be substantially enhanced by unveiling how neural activity represents vibrotactile frequency information.
Sung-Phil Kim +2 more
exaly +5 more sources
Vibrotactile intensity and frequency information in the Pacinian system: A psychophysical model [PDF]
Perception & Psychophysics, 2005 The objective of the study was to characterize the Pacinian representation of stimulus waveform. Subjects were presented with pairs of high-frequency vibrotactile stimuli that varied in intensity and/or frequency content and made same-different judgments under conditions of low-frequency adaptation designed to minimize the contribution of the RA system.
Jeffrey Yau +2 more
exaly +3 more sources
Frequency Modulation Based Vibrotactile Device for Teleoperation
2009 Third IEEE International Conference on Space Mission Challenges for Information Technology, 2009This study investigated how people achieve pointing and path following tasks using a vibrotactile device. In pointing tasks, subjects are asked to reach a target as fast as possible guided by two types of tactile information generated by a specific glove we developed.
H. Phong Pham, Ryad Chellali
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Vibrotactile reception of transformed voice fundamental frequency
The Journal of the Acoustical Society of America, 1979Deaf and hearing subjects were asked to identify the stress pattern in a short sentence from the variation in voice fundamental frequency (F0) when presented aurally (for hearing subjects) and when transformed into vibrotactile pulse frequency (for both groups). Various transformations from F0 to pulse frequency were tested.
M. Rothenberg, R. D. Molitor
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Time-frequency analysis of vibrotactile driving responses by matching pursuit
Journal of Neuroscience Methods, 1998A new method of time-frequency analysis, based on the Matching Pursuit (MP) algorithm, was used to extract and quantify EEG 'driving' or frequency-following responses produced in human primary somatosensory cortex (SI) by 33 Hz vibrotactile stimulation of the right index fingertip in a single subject.
Piotr Durka +2 more
exaly +3 more sources
Vibrotactile Frequency Discrimination Performance with Cross-Channel Distractors
2014To obtain accurate surface information about an object by touch, we have to selectively attend to one source of tactile sensory information while ignoring the influence of others that occur at the same time (e.g., the sensation of of a shirt sleeve contacting the skin.) To investigate how the brain isolates different events, we examined the frequency ...
Scinob Kuroki +2 more
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Lingual Vibrotactile and Auditory Cross-Modal Matching: Frequency Effects
Perceptual and Motor Skills, 19865 subjects matched pairs of auditory and vibrotactile stimuli on intensity, making judgments of suprathreshold magnitudes. Slope values for the 100-Hz cross-modal lingual vibrotactile stimulus-standard frequency condition were steeper than those for 250- or 400-Hz conditions.
D, Harris, D, Fucci, L, Petrosino
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A closed-loop tactor frequency control system for vibrotactile feedback
CHI '05 Extended Abstracts on Human Factors in Computing Systems, 2005In this paper, we address the problem of maintaining a precise frequency in vibrating motors for use as vibrotactile cueing devices. Our solution utilizes a piezoelectric film sensor that measures the motor frequency and uses a feedback-loop circuit to dynamically adjust the motor power to maintain the target frequency. We confirmed the accuracy of the
Justin Cohen +5 more
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