scholarly journals Tactile Detection Threshold is Changed According to Temporal Synchrony with Visual Stimulus

i-Perception ◽  
10.1068/ic848 ◽  
2011 ◽  
Vol 2 (8) ◽  
pp. 848-848
Author(s):  
Yumi Ju ◽  
Kyoung-Min Lee
Keyword(s):  
Visual Stimulus ◽  
Detection Threshold ◽  
Temporal Synchrony ◽  
Tactile Detection

scholarly journals Influence of Visual Motion on Tactile Motion Perception

2006 ◽  
Vol 96 (3) ◽  
pp. 1625-1637 ◽  
Author(s):  
S. J. Bensmaïa ◽  
J. H. Killebrew ◽  
J. C. Craig
Keyword(s):  
Visual Stimulus ◽  
Visual Motion ◽  
Temporal Frequency ◽  
Sensory Level ◽  
Temporal Synchrony ◽  
Tactile Stimuli ◽  
Tactile Interaction ◽  
Visual Distractors ◽  
Speed Discrimination ◽  
Perceived Speed

Subjects were presented with pairs of tactile drifting sinusoids and made speed discrimination judgments. On some trials, a visual drifting sinusoid, which subjects were instructed to ignore, was presented simultaneously with one of the two tactile stimuli. When the visual and tactile gratings drifted in the same direction (i.e., from left to right), the visual distractors were found to increase the perceived speed of the tactile gratings. The effect of the visual distractors was proportional to their temporal frequency but not to their perceived speed. When the visual and tactile gratings drifted in opposite directions, the distracting effect of the visual distractors was either substantially reduced or, in some cases, reversed (i.e., the distractors slowed the perceived speed of the tactile gratings). This result suggests that the observed visual-tactile interaction is dependent on motion and not simply on the oscillations inherent in drifting sinusoids. Finally, we find that disrupting the temporal synchrony between the visual and tactile stimuli eliminates the distracting effect of the visual stimulus. We interpret this latter finding as evidence that the observed visual-tactile interaction operates at the sensory level and does not simply reflect a response bias.

scholarly journals Modulation of tactile detection threshold with rhythmic somatosensory entrainment

2019 ◽  
Author(s):  
Michel J. Wälti ◽  
Marc Bächinger ◽  
Nicole Wenderoth
Keyword(s):  
Neural Activity ◽  
Detection Threshold ◽  
Sensory Perception ◽  
Sensory Stimulation ◽  
Masking Effect ◽  
Strong Impact ◽  
Alpha Power ◽  
Brain Oscillations ◽  
Tactile Stimuli ◽  
Tactile Detection

AbstractOngoing neural activity in human somatosensory cortex has a strong impact on the detectability of weak tactile stimuli. Recent studies suggest that brain oscillations, which determine the state of excitability of a cortical area, play a crucial role in this process. Mainly two frequency bands have been reported to be involved in conscious sensory perception: alpha (8 – 12 Hz) and beta (15 – 30 Hz). In addition to correlative findings, more recent studies investigated causality by measuring the extent to which directly modulating brain oscillations affects sensory perception. While most of these studies use transcranial alternating current stimulation (tACS), rhythmic sensory stimulation has been suggested as a simple and safe alternative to entrain ongoing neural activity. However, convincing findings demonstrating the modulation of neural signals and related behavioral function are scarce.Here, we investigated whether rhythmically induced brain oscillations by means of vibrotactile stimulation (i.e. sensory entrainment) modulate tactile detection. In line with previous findings, we show in trials without sensory entrainment that preceding alpha power and phase-angles in beta oscillations predict the detection rate of a weak tactile stimulus. Further, we reveal a masking effect induced by sensory entrainment stimulation resulting in higher perception thresholds. Intriguingly, we find that the masking effect is modulated by the strength of neural entrainment resulting from 20 Hz stimulation. Our data provide evidence for the possibility to modulate sensory processing with rhythmic sensory stimulation. However, in light of the induced masking effects, the feasibility of this entrainment method to modulate human behavior remains questionable.

Tactile Detection Threshold Determined with Single Sinusoidal Mechanical Pulses in the Monkey Skin

1986 ◽  
Vol 63 (3) ◽  
pp. 1180-1182
Author(s):  
Antti Pertovaara ◽  
Ilkka Linnankoski
Keyword(s):  
Detection Threshold ◽  
Detection Thresholds ◽  
Stimulus Pulse ◽  
Electrophysiological Studies ◽  
Tactile Detection Thresholds ◽  
Tactile Detection

Tactile detection thresholds for single sinusoidal mechanical pulses increased with decreases in the frequency of the stimulus pulse (from 150 to 20 Hz) in a monkey's skin. The results correspond with those of similar electrophysiological studies.

scholarly journals Tactile Detection in Fibromyalgia: A Systematic Review and a Meta-Analysis

2021 ◽  
Vol 2 ◽  
Author(s):  
Tania Augière ◽  
Audrey Desjardins ◽  
Emmanuelle Paquette Raynard ◽  
Clémentine Brun ◽  
Anne Marie Pinard ◽  
...  
Keyword(s):  
Systematic Review ◽  
Tactile Stimulation ◽  
Meta Analysis ◽  
Detection Threshold ◽  
Pain Syndrome ◽  
Body Representation ◽  
Future Research ◽  
Tactile Stimuli ◽  
The Central Nervous System ◽  
Tactile Detection

Fibromyalgia is a chronic pain syndrome characterized by sensorimotor deficits and distortions of body representation, that could both be caused by alterations in sensory processing. Several studies suggest a hypersensitivity to various sensory stimulations in fibromyalgia but results on detection of both noxious and non-noxious tactile stimulation, which are particularly relevant for body representation and motor control, remain conflicting. Therefore, the aim of this study is to systematically review and quantify the detection thresholds to noxious and non-noxious tactile stimuli in individuals with fibromyalgia compared to pain-free controls. A systematic review and a meta-analysis were performed in the MEDLINE, EMBASE, CINAHL, Cochrane, PsycInfo and Web of Science databases using keywords related to fibromyalgia, tactile pain detection threshold, tactile detection threshold and quantitative sensory testing. Nineteen studies were included in the review, with 12 in the meta-analysis. Despite the heterogeneity of the results, the data from both the review and from the meta-analysis suggest a trend toward hyperalgesia and no difference of sensitivity to non-noxious tactile stimuli in participants with fibromyalgia compared to healthy controls. This contradicts the hypothesis of a general increase in responsiveness of the central nervous system to noxious and non-noxious stimulations in fibromyalgia. This study shows no alteration of the sensitivity to non-noxious tactile stimulation in fibromyalgia, suggesting that an altered unimodal processing is not sufficient to explain symptoms such as sensorimotor impairments and body representation distortions. Future research should investigate whether alterations in multisensory integration could contribute to these symptoms.

VISUAL STIMULUS REDINTEGRATION IN THE CHIMPANZEE.

1966 ◽  
Author(s):  
DONALD N. FARRER ◽  
JIM MILNER
Keyword(s):  
Visual Stimulus

Gaze and Postural Coupling to Visual Stimulus Oscillations of Complex Motion Organization

2012 ◽  
Author(s):  
Joshua Haworth ◽  
Nathaniel Hunt ◽  
Yawen Yu ◽  
Nicholas Stergiou
Keyword(s):  
Visual Stimulus ◽  
Complex Motion
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