Results 181 to 190 of about 9,536 (210)
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The localization of low- and high-frequency vibrotactile stimuli
The Journal of the Acoustical Society of America, 1990Four experiments were conducted to determine whether spatial localization on the skin varied in acuity as a function of frequency of vibratory stimulation. The glabrous skin of the palm over the hypothenar eminence was selected as the site for stimulation by two frequencies, one at 25 Hz to stimulate non-Pacinian receptors, and one at 250 Hz to excite ...
C E, Sherrick +2 more
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Vibrotactile Frequency Recognition: Forward and Backward Masking Effects
The Journal of General Psychology, 1986Forward and backward vibrotactile recognition masking was investigated in 4 subjects with 240-Hz and 160-Hz targets of 20 ms duration and four 200-Hz masks, using interstimulus intervals (ISIs) ranging from -500 to 500 ms. Two of the masks (short) were 20 ms and two (long) were 200 ms in duration.
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Effects of Digital Vibrotactile Speech Feedback on Overt Stuttering Frequency
Perceptual and Motor Skills, 2009Fluency-enhancing speech feedback, originating from internally or externally generated sources via auditory or visual sensory modalities is not restricted to a specific sensory modality or signal origination. Research suggests that externally generated digital vibrotactile speech feedback serves as an effective fluency enhancer.
Gregory J, Snyder +3 more
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Vibrotactile masking: Effects of stimulus onset asynchrony and stimulus frequency
The Journal of the Acoustical Society of America, 1989Vibrotactile thresholds for the detection of a 50-ms vibratory stimulus on the thenar eminence of the hand were measured in the presence of and in the absence of a 700-ms suprathreshold vibratory masking stimulus. When thresholds were measured in the presence of the masking stimulus, stimulus onset asynchrony (SOA) was varied so that backward ...
G A, Gescheider +2 more
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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.
J, Zygierewicz +4 more
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Wearable Dual-Frequency Vibrotactile System for Restoring Force and Stiffness Perception
IEEE Transactions on Haptics, 2020Recently, there has been substantial progress in the mechatronic design and myoelectric control of active prostheses. However, a significant unmet need is the lack of sensory feedback in commercial prostheses for upper-limb amputees. The lack of sensory perception impacts on the control performance and embodiment, determining relatively high rejection ...
Timothee Gathmann +3 more
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Coding of vibrotactile stimulus frequency by Pacinian corpuscle afferents
The Journal of the Acoustical Society of America, 1991Psychophysical and electrophysiological techniques were used to study the encoding and processing of information about the frequency content of vibrational stimuli applied to glabrous skin in humans and cats. Trained human subjects were asked to discriminate changes in stimulus frequency and harmonic content for pairs of mono- and diharmonic sinusoidal
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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)
Tanaka, Y. +5 more
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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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Speechreading sentences with single-channel vibrotactile presentation of voice fundamental frequency
The Journal of the Acoustical Society of America, 1990The main goal of this study was to investigate the efficacy of four vibrotactile speechreading supplements. Three supplements provided single-channel encodings of fundamental frequency (F0). Two encodings involved scaling and shifting glottal pulses to pulse rate ranges suited to tactual sensing capabilities; the third transformed F0 to differential ...
S P, Eberhardt +3 more
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