Tactile Expression Research Articles

Self-Adaptive Perception of Object's Deformability with Multiple Deformation Attributes Utilizing Biomimetic Mechanoreceptors.

The perception of object's deformability in unstructured interactions relies on both kinesthetic and cutaneous cues to adapt the uncertainties of an object. However, the existing tactile sensors cannot provide adequate cutaneous cues to self-adaptively estimate the material softness, especially in non-standard contact scenarios where the interacting object deviates from the assumption of an elastic half-infinite body. This paper proposes an innovative design of a tactile sensor that integrates the capabilities of two slow-adapting mechanoreceptors within a soft medium, allowing self-decoupled sensing of local pressure and strain at specific locations within the contact interface. By leveraging these localized cutaneous cues, the sensor can accurately and self-adaptively measure the material softness of an object, accommodating variations in thicknesses and applied forces. Furthermore, when combined with a kinesthetic cue from the robot, the sensor can enhance tactile expression by the synergy of two relevant deformation attributes, including material softness and compliance.It is demonstrated that the biomimetic fusion of tactile information can fully comprehend the deformability of an object, hence facilitating robotic decision-making and dexterous manipulation.

A High Percentage of DNAM-1+ and Low Percentage of Tactile+ NK Cells at Diagnosis Correlate with Complete Response and Survival in AML: A Sub-Analysis of the Ven-a-Qui Pethema Trial

Background: Natural killer (NK) immune status in Acute Myeloid Leukemia (AML) could influence therapeutic results and natural history of the disease. Objectives: In the phase I/II VEN-A-QUI (Clinical trials NCT04687761) clinical trial for unfit newly diagnosed AML patients (venetoclax+Quizartinib+azacytidine or low-dose cytarabine), it was planned a prospective study of NK populations and their influence in the main clinical outcomes. NK cells were analyzed at the diagnosis in a central laboratory. Material and methods: We analyzed NK cell subpopulations based in the expression of DNAM-1, TIGIT, TACTILE, CD8, PD-1, TIM-3, LAG-3, NKp44, NKp46, NKp30, CD16, CD85j,KIR2D, NKG2C, NKG2A, CD57, CD6, CD244, NKp80, Perforin, Granulolysin and Granzyme B. We compare composite Complete Remission (CRc) results of the Venetoclax/Quizatinib with Aza or Cytarabine vs. not achieving CRc using t Student. MaxStat statistics was used to test the significant limit of those populations with a significant difference (R-statistics version 4.2.2). Survival analysis comparing significant differences between patients in CRc was performed using LogRank test and Kaplan Maier. Cox survival analysis was performed to evaluate if the presence of this populations could be an independent factor against the European Leukemia Net classification of 2017 and p53. Data of molecular characteristics were obtained with an NGS panel of 40 genes. RESULTS: The trial included 76 ineligible patients for intensive chemotherapy (37 and 39 were in Aza and LDAC arms respectively). cCR was obtained in 39 patients (51.3%). ELN2017 risk was favorable in 8, intermediate in 15, and Adverse in 53. In 70 patients NK cell populations were analyzed (4 patients with very low percentage of NK cells, 2 with no sample at diagnosis were excluded from the study). There were significant differences between patients who achieve CRc and those who did not, according to DNAM-1 (74.4% vs 61.9, p=0.0018) and TACTILE (62% vs. 72%, p=0.02) expression on NK cells. The rest of antigens analyzed on NK cells were not significant. We found a cutoff of 62% of DNAM-1+ and less than 81% of TACTILE to differentiate populations in terms of survival using long-rank test. The number of DNAM-1 positive was 47 (60%) and TACTILE- was 55 (78%). The median OS of DNAM-1+ was better than DNAM-1− (18.4 vs 4.7 months, p=0.0001), and between TACTILE− vs TACTILE+ (17,36 vs. 4.6 months, p=0.005). Using an Cox model comparing karyotype, p53 and DNAM-1+ and TACTILE-, only DNAM-1+ was associated with better outcome (HR:0.33 (0.17-0.66) and TACTILE+ with worse (HR: 2.44 (1.20-4.99) in multivariate analysis. Conclusions: DNAM-1(CD226) positive and TACTILE (CD96) negative NK cell populations are associated to CR and better OS. These findings need to be confirmed in larger studies. Interestingly, DNAM-1 is an activating receptor and TACTILE is an inhibitory receptor for NK cells that share the same CD155 ligand but display opposite function.

Not Quite A Corpse.

“When blood gets onthe field you can’t seethe plane correctly.” I hearfrom the other sideof the surgical drape, its thinfabric a tactile expression of the dividebetween form and function, but lifeis abstracted on both sides, mineno less for including mere unconsciousmotion. Perhaps I let your bloodpressure drift too high, or maybethere were small, unseen vesselsoozing. Blame for the suboptimaltiming of life means resisting wiggling,dancing, crying. Your living bodymoves—too messy, toomuch. Mine, too. Operating on deadbodies would be easier, evenarchetypal: no squirming, pulsing,leaking. . . . beautiful like a platefrom Netter. By that measure,surgery improves as we approachdeath—an asymptotewe sometimes reach.

Intrinsically Synchronized Flexible Visuo‐Haptic Device Operated by Single External Electric Field

AbstractProviding multisensory expression in a synchronized form helps human perception in human‐machine interfaces. Synchronized visuo‐haptic integration has been relatively less explored because the two expressions operate by different principles. This study demonstrates a flexible visuo‐haptic device that generates haptic sensation by electrovibration (EV) in conjunction with the synchronized optical expression by alternating‐current electroluminescence (ACEL). This study suggests material design and electric field modulation that are effective for both EV and electroluminescence (EL). Owing to the structural simplicity of the opto‐electrovibration (O‐EV) device, the EV and EL are intrinsically coupled under single electric field input. A curved O‐EV device simultaneously provides localized frictional tactile expression and localized luminescence on the touch screen. This study opens a simple material approach for multisensory expression that can be useful in soft haptic devices.

Orange Waste Films as a Raw Material for Designing Bio-Based Textiles: A Hybrid Research Method

Bio-based textiles are an emerging area of cross-disciplinary research, involving material science and design and contributing to textile sustainability. An example of a bio-based textile is an orange-waste film, which is plant-based and biodegradable and possesses mechanical properties which are comparable to some commodity plastics. The research project presented in this article aimed to explore orange-waste film as a new material for textile and fashion design and highlights how experimental co-design processes and innovation involving orange waste film as a textile material adds a new layer of material understanding to both textile design and technology-driven material research. Material-development methods were used to develop the orange-waste film, as were textile design methods with a focus on surface design. The results show that material variables such as tensile strength and elongation are dependent on the grinding process and drying temperature used for the raw material, as these determined the quality and durability of the orange-waste film and its applicability to the field of textile design. The use of orange waste in the creation of textiles opens up for more ways of thinking about and working with materials, and orange waste could become a desirable raw material for textile design on the basis that it introduces certain aesthetic and functional possibilities through its visual and tactile expression and material behaviour, in addition to defining methods of producing textiles.

Being touched through touch. Trauma treatment through haptic perception at the Clay Field: A sensorimotor art therapy

Neuroscientific research provides increasing evidence of the intimate relationship between physiological and psychological dimensions of human experience. The integration of body awareness into psychotherapy through a focus on sensorimotor processes is increasingly becoming best practice in trauma therapy. So far the arts therapies have given little attention to the role of touch in this context. Touch is one of the fundamental human experiences: to know loving or unwanted touch, the traumatic rupture of boundaries and their repair. Touch is the basis for secure attachment, linked to earliest body memories, to the ability to handle the world, to sexuality and injury. The use of the hands as a tool of perception is known as haptic perception. Clay is a familiar art therapy material which features tactile expression and experiences. When hands touch clay in a therapeutic setting, exteroceptors and interoceptors become naturally stimulated, and every movement of the hands provides instant feedback to the brain. Haptic perception allows non-verbal access to psychological and sensorimotor processes thwarted by trauma. This article reviews Trauma Healing at the Clay Field® as a sensorimotor art therapy approach in trauma recovery.

1P1-A02 運筆動作を介した触覚コンテンツ生成および共有のための枠組み(触覚と力覚(3))

This paper describes a novel framework for creation and sharing of a tactile content. Our framework supports a handwriting motion trajectory as a tactile expression. A user can input a trajectory by using conventional pointing input device including a mouse, a touch screen, etc. The trajectory is encoded in an image data and shared through the Twitter platform. We employ an array of vibrators to replay the created trajectory on a palm. The apparent motion enables displaying continuous movement using discrete vibration stimuli.

A Vibration Tactile Aesthetic to Enhance the Realism of Interactive Game Avatar

This study proposes a new method to augment the realism of avatar by using tactile vibration and facial expression. Currently, interactive game still lack of interactivity and immersiveness. In this paper, we create an avatar with some intelligence and emotional features in order to support the realism of avatar. Our approach based on mapping the 2D valence emotion diagram to particular magnitude vibration. We also consider the duration of vibration and the acceleration time that occurred during vibration. Through the experiment we succeed for classifying and mapping into two emotion states: angry and happy. Furthermore, our result has proven to differentiate in detail the emotion levels of angry. The result also compared to the previous result and we have obtained 35% until 55% better than the previous avatar in term of human perception that involved into avatar. This result is believed as well to enhance the interactivity and immersiveness of interactive game for overall

A Diagram Acquisition and Generation System for Blind Persons Using Tactile and Auditory Senses

The humans can use diagrams to clearly express information that cannot be expressed well in words. Now, one way to present graphic information to blind persons is the use of tactile diagrams; nevertheless, it is extremely difficult for a blind person himself to express information by means of diagrams. Under these circumstances, we have produced a system whereby a blind person himself produces diagrams and uses them to communicate with others. This system is composed of a voice input/output device, a keyboard, a memory unit, and a personal computer. Graphic information is presented separately as related to the tactile and auditory senses of blind persons. The system can thus correct the shortcoming that graphic information is expressed only in the form of an tactile or auditory (linguistic) expression. In addition, a blind person can operate the system by a dialogue by relying on his own tactile and auditory senses, and produce and preserve diagrams. A psychological experiment was conducted by using the new system on blind subjects, and it,, was confirmed that the system can help the subjects memorize graphic information and can also be used for expressing images as conceived in their minds.