Tactile rendering of textures by an Electro-Active Polymer piezoelectric device: mimicking Friction-Induced Vibrations

Felicetti, Livia; Châtelet, Éric; Latour, Antoine; Cornuault, Pierre-Henri; Massi, Francesco

doi:10.1016/j.biotri.2022.100211

Cited by 11 publications

(4 citation statements)

References 32 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Intensity is known as the principal perceptual attribute in vibrotactile perception, playing a pivotal role in discriminating between tactile stimuli. This holds true for both simple synthesized vibrations [16] and for friction induced vibration recorded from various textures [17]. Perceived intensity is directly associated with the signal's amplitude.…”

Section: A Intensity and Frequency Perceptionmentioning

confidence: 75%

“…It should be noted that the impedance of the finger grip attenuates the resonance of the actuator [47] compared to the free oscillations condition provided in the accelerometer reference guide. The differences in frequency response among individuals holding the actuator are negligible concerning perception [48]. Therefore, a unique frequency response was utilized in this study.…”

Section: B Vibration Renderingmentioning

confidence: 99%

See 1 more Smart Citation

The High/Low Frequency Balance Drives Tactile Perception of Noisy Vibrations

Bernard,

Thoret,

Huloux

et al. 2024

IEEE Trans. Haptics

View full text Add to dashboard Cite

Noisy vibrotactile signals transmitted during tactile explorations of an object provide precious information on the nature of its surface. Understanding the link between signal properties and how they are interpreted by the tactile sensory system remains challenging. In this paper, we investigated human perception of broadband, stationary vibrations recorded during exploration of textures and reproduced using a vibrotactile actuator. Since intensity is a well-established perceptual attribute, we here focused on the relevance of the spectral content. The stimuli were first equalized in perceived intensity and subsequently used to identify the most salient spectral features using dissimilarity estimations between pairs of successive vibration. Based on dimensionally reduced spectral representations, models of dissimilarity ratings showed that the balance between low and high frequencies was the most important cue. Formal validation of this result was achieved through a Mushra experiment, in which participants assessed the fidelity of resynthesized vibrations with various distorted frequency balances. These findings offer valuable insights into human vibrotactile perception and establish a computational framework for analyzing vibrations as humans do. Moreover, they pave the way for signal synthesis and compression based on sparse representations, holding significance for applications involving complex vibratory feedback.

show abstract

Section: A Intensity and Frequency Perceptionmentioning

confidence: 75%

Section: B Vibration Renderingmentioning

confidence: 99%

The High/Low Frequency Balance Drives Tactile Perception of Noisy Vibrations

Bernard,

Thoret,

Huloux

et al. 2024

IEEE Trans. Haptics

View full text Add to dashboard Cite

show abstract

“…Circular shapes were inspired by both the shape of the tactile receptors' fields that demonstrate a preferential skin strain axis and the orientation of this axis, which was not the same for all units ( 36 , 37 ) and the circular forms of the dermatoglyphics ( 38 ). For instance, Scheibert et al ( 39 ) showed that when scanning a surface with a fake finger, friction-induced vibrations (FIVs), whose characteristics depend not only on the surface texture but also on the fingerprints ( 40 – 42 ), were amplified when the fake finger had the main geometrical characteristics of human fingerprints compared to when it had a smooth surface (i.e., no ridges). The power spectrum issued from the finger exploration showed an amplification of the signal around the frequency pertaining to the optimal sensitivity range of the Pacinian receptors [i.e., ranging between 100 and 300 Hz ( 43 )].…”

Section: Methodsmentioning

confidence: 99%

Cortical facilitation of tactile afferents during the preparation of a body weight transfer when standing on a biomimetic surface

Sutter,

Moinon,

Felicetti

et al. 2023

Front. Neurol.

Self Cite

View full text Add to dashboard Cite

Self-generated movement shapes tactile perception, but few studies have investigated the brain mechanisms involved in the processing of the mechanical signals related to the static and transient skin deformations generated by forces and pressures exerted between the foot skin and the standing surface. We recently found that standing on a biomimetic surface (i.e., inspired by the characteristics of mechanoreceptors and skin dermatoglyphics), that magnified skin–surface interaction, increased the sensory flow to the somatosensory cortex and improved balance control compared to standing on control (e.g., smooth) surfaces. In this study, we tested whether the well-known sensory suppression that occurs during movements is alleviated when the tactile afferent signal becomes relevant with the use of a biomimetic surface. Eyes-closed participants (n = 25) self-stimulated their foot cutaneous receptors by shifting their body weight toward one of their legs while standing on either a biomimetic or a control (smooth) surface. In a control task, similar forces were exerted on the surfaces (i.e., similar skin–surface interaction) by passive translations of the surfaces. Sensory gating was assessed by measuring the amplitude of the somatosensory-evoked potential over the vertex (SEP, recorded by EEG). Significantly larger and shorter SEPs were found when participants stood on the biomimetic surface. This was observed whether the forces exerted on the surface were self-generated or passively generated. Contrary to our prediction, we found that the sensory attenuation related to the self-generated movement did not significantly differ between the biomimetic and control surfaces. However, we observed an increase in gamma activity (30–50 Hz) over centroparietal regions during the preparation phase of the weight shift only when participants stood on the biomimetic surface. This result might suggest that gamma-band oscillations play an important functional role in processing behaviorally relevant stimuli during the early stages of body weight transfer.

show abstract

“…The challenge is to give the illusion of touching a real fabric when exploring a tactile feedback device. Devices capable of reproducing surfaces have been designed by different groups using different technologies (e.g., Biet et al, 2008; Felicetti et al, 2022). Using ultrasonic vibrations to modulate the coefficient of friction between the finger and the surface, the STIMTAC device has been used in several tribology studies (Biet et al, 2008; Bueno et al, 2014; 2015; Camillieri et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

Seeing the piles of the velvet bending under our finger sliding over a tactile stimulator improves the perception of the fabric

Mouchnino,

Camillieri,

Faucheu

et al. 2024

Preprint

View full text Add to dashboard Cite

Using friction modulation to simulate fabrics with a tactile stimulator (i.e. virtual surface) is not sufficient to render fabric touch and even more so for hairy fabrics. We hypothesized that seeing the pile of the velvet darken or lighten depending on changes in the finger movement direction on the virtual surface should improve the velvet fabric rendering. Participants actively rubbed a tactile device or a velvet fabric looking at a screen that showed a synthesized image of a velvet which either remained static (V-static) or darkening/lightening with the direction of touch (V-moving). We showed that in V-moving condition, the touched surface was always perceived rougher, which is a descriptor of a real velvet (Experiment 1). Using electroencephalography and sources localization analyses, we found greater theta band [5-7 Hz] oscillation power in the left inferior posterior parietal lobule (PPC) in the Virtual velvet/V-moving condition as compared to both Real velvet/ V-static and Virtual velvet/V-static conditions(Experiment 2). This result is consistent with studies that give a crucial role to the left PPC for visuo-tactile binding. The greater activity of the lateral occipital area found in the Virtual velvet/V-moving condition could have contributed to the emergence of a velvet more realistic representation.

show abstract

Tactile rendering of textures by an Electro-Active Polymer piezoelectric device: mimicking Friction-Induced Vibrations

Cited by 11 publications

References 32 publications

The High/Low Frequency Balance Drives Tactile Perception of Noisy Vibrations

The High/Low Frequency Balance Drives Tactile Perception of Noisy Vibrations

Cortical facilitation of tactile afferents during the preparation of a body weight transfer when standing on a biomimetic surface

Seeing the piles of the velvet bending under our finger sliding over a tactile stimulator improves the perception of the fabric

Contact Info

Product

Resources

About