Static and active tactile perception and touch anisotropy: aging and gender effect

Abdouni, Abdenaceur; Moreau, G.; Vargiolu, R.; Zahouani, H.

doi:10.1038/s41598-018-32724-4

Cited by 21 publications

(16 citation statements)

References 54 publications

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“…Another interesting finding in the demographic aspect is that the best performing participant in the visual-tactile inspection was female. This is consistent with the observation that women generally have a higher tactile perception than men [35].…”

Section: Expertisesupporting

confidence: 92%

Comparison of Visual and Visual–Tactile Inspection of Aircraft Engine Blades

2021

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Background—In aircraft engine maintenance, the majority of parts, including engine blades, are inspected visually for any damage to ensure a safe operation. While this process is called visual inspection, there are other human senses encompassed in this process such as tactile perception. Thus, there is a need to better understand the effect of the tactile component on visual inspection performance and whether this effect is consistent for different defect types and expertise groups. Method—This study comprised three experiments, each designed to test different levels of visual and tactile abilities. In each experiment, six industry practitioners of three expertise groups inspected the same sample of N = 26 blades. A two-week interval was allowed between the experiments. Inspection performance was measured in terms of inspection accuracy, inspection time, and defect classification accuracy. Results—The results showed that unrestrained vision and the addition of tactile perception led to higher inspection accuracies of 76.9% and 84.0%, respectively, compared to screen-based inspection with 70.5% accuracy. An improvement was also noted in classification accuracy, as 39.1%, 67.5%, and 79.4% of defects were correctly classified in screen-based, full vision and visual–tactile inspection, respectively. The shortest inspection time was measured for screen-based inspection (18.134 s) followed by visual–tactile (22.140 s) and full vision (25.064 s). Dents benefited the most from the tactile sense, while the false positive rate remained unchanged across all experiments. Nicks and dents were the most difficult to detect and classify and were often confused by operators. Conclusions—Visual inspection in combination with tactile perception led to better performance in inspecting engine blades than visual inspection alone. This has implications for industrial training programmes for fault detection.

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Section: Expertisesupporting

confidence: 92%

Comparison of Visual and Visual–Tactile Inspection of Aircraft Engine Blades

2021

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“…Also, from our explorative analyses addressing potential gender differences, inconsistent with a previous report ( Abdouni et al, 2018 ), we did not find any differences in either behavioral or neural results. Still, as this is an exploratory approach, the interpretation of this result should be cautious.…”

Section: Discussioncontrasting

confidence: 99%

Neural correlates of tactile hardness intensity perception during active grasping

Kim

Yeon

et al. 2021

PeerJ

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While tactile sensation plays an essential role in interactions with the surroundings, relatively little is known about the neural processes involved in the perception of tactile information. In particular, it remains unclear how different intensities of tactile hardness are represented in the human brain during object manipulation. This study aims to investigate neural responses to various levels of tactile hardness using functional magnetic resonance imaging while people grasp objects to perceive hardness intensity. We used four items with different hardness levels but otherwise identical in shape and texture. A total of Twenty-five healthy volunteers participated in this study. Before scanning, participants performed a behavioral task in which they received a pair of stimuli and they were to report the perceived difference of hardness between them. During scanning, without any visual information, they were randomly given one of the four objects and asked to grasp it. We found significant blood oxygen-level-dependent (BOLD) responses in the posterior insula in the right hemisphere (rpIns) and the right posterior lobe of the cerebellum (rpCerebellum), which parametrically tracked hardness intensity. These responses were supported by BOLD signal changes in the rpCerebellum and rpIns correlating with tactile hardness intensity. Multidimensional scaling analysis showed similar representations of hardness intensity among physical, perceptual, and neural information. Our findings demonstrate the engagement of the rpCerebellum and rpIns in perceiving tactile hardness intensity during active object manipulation.

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“…All of the above studies considered events stimulating the FA-I, or SA-I and SA-II mechanoreceptors [8], responsible for low-frequency skin motion and force grip control [22]. On the other hand, the foundational studies on human vibrotaction that deal with the frequency range targeted by Pacinian corpuscles (approximately 40-800 Hz, FA-II mechanoreceptors) [27] mainly tested vibrations in the normal direction: Among the most relevant results, the lowest sensitivity threshold for the fingertips was measured in the frequency range around 250 Hz [46], and it was found that vibration perception at high frequencies varies between humans due to several factors, including the density of receptors [2], the temperature of the skin [16], [1], and the mechanical properties of the skin related to aging effects [5]. Some effects related to gender have been identified, too, although not statistically significant, with slightly lower perception thresholds at 250 Hz in women [45].…”

Section: Introductionmentioning

confidence: 99%

Effects of Vibration Direction and Pressing Force on Finger Vibrotactile Perception and Force Control

Pra

Papetti

Järveläinen

et al. 2023

IEEE Trans. Haptics

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This paper reports about the effects of vibration direction and finger-pressing force on vibrotactile perception, with the goal of improving the effectiveness of haptic feedback on interactive surfaces. An experiment was conducted to assess the sensitivity to normal or tangential vibration at 250 Hz of a finger exerting constant pressing forces of 0.5 or 4.9 N. Results show that perception thresholds for normal vibration depend on the applied pressing force, significantly decreasing for the stronger force level. Conversely, perception thresholds for tangential vibrations are independent of the applied force, and approximately equal the lowest thresholds measured for normal vibration.

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Static and active tactile perception and touch anisotropy: aging and gender effect

Cited by 21 publications

References 54 publications

Comparison of Visual and Visual–Tactile Inspection of Aircraft Engine Blades

Comparison of Visual and Visual–Tactile Inspection of Aircraft Engine Blades

Neural correlates of tactile hardness intensity perception during active grasping

Effects of Vibration Direction and Pressing Force on Finger Vibrotactile Perception and Force Control

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