scholarly journals Tactile-STAR: A Novel Tactile STimulator And Recorder System for Evaluating and Improving Tactile Perception

2018 ◽  
Vol 12 ◽  
Author(s):  
Giulia Ballardini ◽  
Giorgio Carlini ◽  
Psiche Giannoni ◽  
Robert A. Scheidt ◽  
Ilana Nisky ◽  
...  
Keyword(s):  
Tactile Perception ◽  
Tactile Stimulator

Sound Enhances Tactile Perception

2007 ◽  
Author(s):  
Tony Ro ◽  
Johanan Hsu ◽  
Nafi Yasar ◽  
L. Caitlin Ellmore ◽  
Michael Beauchamp
Keyword(s):  
Tactile Perception

Definition of Parameters by Process of Additive Manufacturing for Tactile Perception

2017 ◽  
Author(s):  
Sandra Regina Marchi ◽  
Maria Lucia Okimoto ◽  
ALESSANDRO MARQUES ◽  
Ramón Sigifredo Cortés Paredes ◽  
Rafael Lima Vieira
Keyword(s):  
Additive Manufacturing ◽  
Tactile Perception ◽  
Definition Of

scholarly journals Tactile Perception Technologies and Their Applications in Minimally Invasive Surgery: A Review

2020 ◽  
Vol 11 ◽  
Author(s):  
Chao Huang ◽  
Qizhuo Wang ◽  
Mingfu Zhao ◽  
Chunyan Chen ◽  
Sinuo Pan ◽  
...  
Keyword(s):  
Minimally Invasive Surgery ◽  
Minimally Invasive ◽  
Invasive Surgery ◽  
Tactile Perception ◽  
Industrial Robots ◽  
Great Promise ◽  
Support Vector ◽  
Tactile Information ◽  
Conventional Open Surgery ◽  
Sense Of Touch

Minimally invasive surgery (MIS) has been the preferred surgery approach owing to its advantages over conventional open surgery. As a major limitation, the lack of tactile perception impairs the ability of surgeons in tissue distinction and maneuvers. Many studies have been reported on industrial robots to perceive various tactile information. However, only force data are widely used to restore part of the surgeon’s sense of touch in MIS. In recent years, inspired by image classification technologies in computer vision, tactile data are represented as images, where a tactile element is treated as an image pixel. Processing raw data or features extracted from tactile images with artificial intelligence (AI) methods, including clustering, support vector machine (SVM), and deep learning, has been proven as effective methods in industrial robotic tactile perception tasks. This holds great promise for utilizing more tactile information in MIS. This review aims to provide potential tactile perception methods for MIS by reviewing literatures on tactile sensing in MIS and literatures on industrial robotic tactile perception technologies, especially AI methods on tactile images.

Visual Cortex Alterations in Early and Late Blind Subjects During Tactile Perception

Perception ◽  
2021 ◽  
Vol 50 (3) ◽  
pp. 249-265
Author(s):  
A. Ankeeta ◽  
S. Senthil Kumaran ◽  
Rohit Saxena ◽  
Sada N. Dwivedi ◽  
Naranamangalam R. Jagannathan
Keyword(s):  
Visual Cortex ◽  
Children And Adolescents ◽  
Age Of Onset ◽  
Human Subjects ◽  
Functional Results ◽  
Blood Oxygen Level Dependent ◽  
Tactile Perception ◽  
Blood Oxygen Level ◽  
Sensory Motor ◽  
Post Hoc

Involvement of visual cortex varies during tactile perception tasks in early blind (EB) and late blind (LB) human subjects. This study explored differences in sensory motor networks associated with tactile task in EB and LB subjects and between children and adolescents. A total of 40 EB subjects, 40 LB subjects, and 30 sighted controls were recruited in two subgroups: children (6–12 years) and adolescents (13–19 years). Data were acquired using a 3T MR scanner. Analyses of blood oxygen level dependent (BOLD), functional connectivity (FC), correlation, and post hoc test for multiple comparisons were carried out. Difference in BOLD activity was observed in EB and LB groups in visual cortex during tactile perception, with increased FC of visual with dorsal attention and sensory motor networks in EB. EB adolescents exhibited increased connectivity with default mode and salience networks when compared with LB. Functional results correlated with duration of training, suggestive of better performance in EB. Alteration in sensory and visual networks in EB and LB correlated with duration of tactile training. Age of onset of blindness has an effect in cross-modal reorganization of visual cortex in EB and multimodal in LB in children and adolescents.

scholarly journals Human perceptual learning is delayed by the N-methyl-D-aspartate receptor partial agonist D-cycloserine

2021 ◽  
pp. 026988112098634
Author(s):  
Harriet Dempsey-Jones ◽  
Susann Steudte-Schmiedgen ◽  
Michael Browning ◽  
Tamar R Makin ◽  
Marcella L Woud ◽  
...  
Keyword(s):  
Perceptual Learning ◽  
Psychological Treatment ◽  
Longitudinal Design ◽  
Partial Agonist ◽  
Tactile Perception ◽  
Simple Explanation ◽  
Tactile Learning ◽  
Before And After ◽  
Learning And Cognition ◽  
To Receive

Background: The optimisation of learning has long been a focus of scientific research, particularly in relation to improving psychological treatment and recovery of brain function. Previously, partial N-methyl-D-aspartate agonists have been shown to augment reward learning, procedural learning and psychological therapy, but many studies also report no impact of these compounds on the same processes. Aims: Here we investigate whether administration of an N-methyl-D-aspartate partial agonist (D-cycloserine) modulates a previously unexplored process – tactile perceptual learning. Further, we use a longitudinal design to investigate whether N-methyl-D-aspartate-related learning effects vary with time, thereby providing a potentially simple explanation for apparent mixed effects in previous research. Methods: Thirty-four volunteers were randomised to receive one dose of 250 mg D-cycloserine or placebo 2 h before tactile sensitivity training. Tactile perception was measured using psychophysical methods before and after training, and 24/48 h later. Results: The placebo group showed immediate within-day tactile perception gains, but no further improvements between-days. In contrast, tactile perception remained at baseline on day one in the D-cycloserine group (no within-day learning), but showed significant overnight gains on day two. Both groups were equivalent in tactile perception by the final testing – indicating N-methyl-D-aspartate effects changed the timing, but not the overall amount of tactile learning. Conclusions: In sum, we provide first evidence for modulation of perceptual learning by administration of a partial N-methyl-D-aspartate agonist. Resolving how the effects of such compounds become apparent over time will assist the optimisation of testing schedules, and may help resolve discrepancies across the learning and cognition domains.

Application of Brodmann’s Area Maps for Cortical Localization of Tactile Perception Evoked by Fabric Touch

2019 ◽  
Vol 20 (4) ◽  
pp. 876-885
Author(s):  
Qicai Wang ◽  
Yuan Tao ◽  
Jie Yuan ◽  
Zhaohui Jiang ◽  
Zuowei Ding ◽  
...  
Keyword(s):  
Tactile Perception ◽  
Cortical Localization

scholarly journals Human low-threshold mechanoafferent responses to pure changes in friction controlled using an ultrasonic haptic device

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Mariama Dione ◽  
Roger Holmes Watkins ◽  
Eric Vezzoli ◽  
Betty Lemaire-Semail ◽  
Johan Wessberg
Keyword(s):  
Central Nervous System ◽  
Stable Phase ◽  
Sensory Cues ◽  
Temporal Precision ◽  
Object Interaction ◽  
Tactile Stimulator ◽  
The Status ◽  
The Central Nervous System ◽  
Low Threshold ◽  
Human Participants

AbstractThe forces that are developed when manipulating objects generate sensory cues that inform the central nervous system about the qualities of the object’s surface and the status of the hand/object interaction. Afferent responses to frictional transients or slips have been studied in the context of lifting/holding tasks. Here, we used microneurography and an innovative tactile stimulator, the Stimtac, to modulate both the friction level of a surface, without changing the surface or adding a lubricant, and, to generate the frictional transients in a pure and net fashion. In three protocols, we manipulated: the frictional transients, the friction levels, the rise times, the alternation of phases of decrease or increase in friction to emulate grating-like stimuli. Afferent responses were recorded in 2 FAIs, 1 FAII, 2 SAIs and 3 SAIIs from the median nerve of human participants. Independently of the unit type, we observed that: single spikes were generated time-locked to the frictional transients, and that reducing the friction level reduced the number of spikes during the stable phase of the stimulation. Our results suggest that those frictional cues are encoded in all the unit types and emphasize the possibility to use the Stimtac device to control mechanoreceptor firing with high temporal precision.

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