Define Tactile feedback. Tactile feedback synonyms, Tactile feedback pronunciation, Tactile feedback translation, English dictionary definition of Tactile feedback. n. 1. a. The return of a portion of the output of a process or system to the input, especially when used to maintain performance or to control a system or...

Whereas touchscreens are one of the easiest interfaces to manipulate, their biggest downfall is the lack of tactile feedback. While you dont need resistance or vibration when scrolling up and down a mobile webpage, tactile feedback would make games, touch keyboards, and a host of other uses much more interesting. In fact, Disney Researchs new tactile feedback algorithm allows you to feel virtual 3D objects that are displayed on-screen.. ...

An apparatus and method for generating tactile sensation by using constellation metaphor are provided. The apparatus includes: a tactile generator generating a tactile pattern by using a shape of image inputted from a user and generating a tactile icon having a shape of dots and lines by using the constellation metaphor according to the tactile pattern; a tactile indicator indicating a tactile sensation by using the generated tactile pattern; and a display unit displaying the generated tactile icon. Accordingly, there is an advantage in that the tactile pattern is easily generated, and a user can easily recognize the generated tactile pattern.

Cortical excitability can be reliably assessed by means of paired-pulse stimulation techniques. Recent studies demonstrated particularly for motor and visual cortex that cortical excitability is systematically altered following the induction of learning processes or during the development of pathological symptoms. A recent tactile coactivation protocol developed by Godde and coworkers showed that improvement of tactile performance in humans can be achieved also without training through passive stimulation on a time scale of a few hours. Tactile coactivation evokes plastic changes in somatosensory cortical areas as measured by blood oxygenation level-dependent (BOLD) activation in fMRI or SEP-dipole localization, which correlated with the individual gain in performance. To demonstrate changes in excitability of somatosensory cortex after tactile coactivation, we combined assessment of tactile performance with recordings of paired-pulse SEPs after electrical median nerve stimulation of both the ...

Control over tactile feedback devices, force-feedback devices, or a combination thereof comprising: processing device (54 and 53), processing device (54); networking means (55) such as an Internet means, television communications, and satellite communications. Tactile output system selects pre-recorded material (63) in response to sensor input. Biofeedback sensors (13) supply tactile/force-feedback system with additional information. Dermatologically compatible material (50) for combining with tactile feedback devices and force-feedback devices.

Surgeons optimize their performance during a procedure based on multiple information received via eyesight, hearing or tactile feedback. The question remains of how much information can a surgeon take through tactile feedback? This research was motivated by the desire to understand the role of tacti...

When a user explores over an object, mechanoreceptors in humans fingertip dominantly detect small-scale shapes and textures on the surface of the object. For generating and conveying virtual tactile sensations to users, we developed a new flexible hybrid tactile display consisting of an electroactive polymer (EAP) module and an electro-vibration module. The EAP module was used to construct an ultra-thin 3×3 pin-array module for mimicking small-scale shapes on the object. Since each cell of the proposed 3×3 EAP module is independently actuated with high vertical stroke, it is enough to create various micro-shapes. The electro-vibration module was attached on the EAP module. The electro-vibration module consists of two plates coated with compliant electrodes. The electro-vibration module creates micro-vibration to imitate virtual texture on the objects. To design the proposed hybrid tactile display, the equations for the mechanical models of the proposed tactile display were derived. The ...

Products and processes for providing tactile sensations to input devices or electronic devices are provided. Input devices include mechanical input devices (such as, for example, mechanical switches) and non-mechanical input devices (such as, for example, touchpads). Tactile feedback is provided by using an actuator or other means in communication with the input device or electronic device. A controller may be employed to receive signals from the input devices and control the actuator. Tactile feedback to an input device or electronic device may be provided in response to one or more events or situations. Such an event or situation may be any one designated. Examples of such events and situations include the level of pressure placed on an input device; the availability or lack of availability of a function associated with an input device; and the function, menu, or mode of operation associated with an input devices activation. A variety of feedback types and combinations may be selected.

Products and processes for providing tactile sensations to input devices or electronic devices are provided. Input devices include mechanical input devices (such as, for example, mechanical switches) and non-mechanical input devices (such as, for example, touchpads). Tactile feedback is provided by using an actuator or other means in communication with the input device or electronic device. A controller may be employed to receive signals from the input devices and control the actuator. Tactile feedback to an input device or electronic device may be provided in response to one or more events or situations. Such an event or situation may be any one designated. Examples of such events and situations include the level of pressure placed on an input device; the availability or lack of availability of a function associated with an input device; and the function, menu, or mode of operation associated with an input devices activation. A variety of feedback types and combinations may be selected.

Electrocutaneous stimulation can restore the missing sensory information to prosthetic users. In electrotactile feedback, the information about the prosthesis state is transmitted in the form of pulse trains. The stimulation frequency is an important parameter since it influences the data transmission rate over the feedback channel as well as the form of the elicited tactile sensations. We evaluated the influence of the stimulation frequency on the subjects ability to utilize the feedback information during electrotactile closed-loop control. Ten healthy subjects performed a real-time compensatory tracking (standard test bench) of sinusoids and pseudorandom signals using either visual feedback (benchmark) or electrocutaneous feedback in seven conditions characterized by different combinations of the stimulation frequency (FSTIM) and tracking error sampling rate (FTE). The tracking error was transmitted using two concentric electrodes placed on the forearm. The quality of tracking was assessed using the

Tactus Technology is introducing a unique, new keyboard case today called Phorm that promises to bring tactile feedback to the typing experience while still using the on-screen touch keyboard. Phorm uses microfluids to raise a segments of a screen protector kept on with a frame and protective case to apply physical keys that appear and disappear at the swipe of switch. The goal is to improve typing speed and accuracy when typing with the iPad without requiring a keyboard you have to charge or pair with your tablet. Check out the video below to see Phorm in action. expand full story ...

Hi guys, I was wondering if any of you have the TFS2 TACTILE FEEDBACK SYSTEM. http://www.ivibe.com/default.htm It looks like a great add-on for realism enhancement. Is it really worth the money? Have you heard anything about it? I appreciate your inputs.

Objectives: To revise the static and dynamic normative values for the two-point discrimination test and to examine its applicability and validity in patients with a polyneuropathy. Methods: Two-point discrimination threshold values were assessed in 427 healthy controls and 99 patients mildly affected by a polyneuropathy. The controls were divided into seven age groups ranging from 20-29, 30-39,…, up to 80 years and older; each group consisted of at least 30 men and 30 women. Two-point discrimination examination took place under standardised conditions on the index finger. Correlation studies were performed between the obtained scores and the values derived from the Weinstein-Enhanced-Sensory-Test (WEST) and the arm-grade of the Overall Disability SumScore (ODSS) in the patients group (validity studies). Finally, the sensitivity to detect patients mildly affected by a polyneuropathy was evaluated for static and dynamic assessments. Results: There was a significant age dependent increase of the ...

Active touch involves tactile and proprioceptive sensory inputs, activation of the motor system and executive functions. It has been shown by the previous literature that active touch facilitates shape recognition. Since both active and passive exploration requires sequential presentation of the tactile inputs, this facilitation may be due to the improvement of the sequential-processing mechanism. The effects of active and passive touch on the sequential processing of tactile inputs were tested at different stimulus-presentation rates in a counting task. Active touch did not improve the performance, which shows that the additional sensory and motor information conveyed by active exploration are not utilized by the sequential-processing mechanism. Therefore, the results cannot be explained by the feature-specific theory of sequential processing. On the other hand, the counting errors were higher than those predicted by the limitation of the minimal inter-stimulus interval, which is suggested by ...

...Stroke the soft body of a newborn fruit fly larva ever-so-gently with ...Our ability to sense gentle touch is known to develop early and to rem...In an article published online this week in the journal Nature ...Without this key molecule the team discovered flies are insensitive ...,Secrets,of,gentle,touch,revealed,biological,biology news articles,biology news today,latest biology news,current biology news,biology newsletters

UCSF scientists have uncovered the molecular basis of gentle touch, one of the most fundamental but least well understood of our senses.

UCSF scientists have uncovered the molecular basis of gentle touch, one of the most fundamental but least well understood of our senses.

The Gentle Touch guide to keeping your family cool in the hot weather. A-Z tips on how to help your baby stay cool and enjoy the summer.

GENTLE TOUCH DENTISTRY, INC. providing professional dental care. Laurie Johns-Stoutamire is a well-trained Orange Park Dentist call us today!!

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Pink Mechanical keyboard is the name given to the mechanical keyboard from which the new Apple Mac Pro models are being manufactured.. It is a unique design, which has been designed to work well in a variety of environments.. It can be used as a desktop keyboard or as a laptop keyboard, depending on how you use it.. The design is simple but effective.. The keyboard is easy to use, has a great feel, and it is easy for you to type on it.. If you are a typist, you will enjoy the new mechanical keyboard.. It features the best tactile feedback, and the tactile feedback is a key factor in its usability.. The Cherry MX switch is a very quiet switch that offers great typing feel.. It offers a smooth typing experience and is not sensitive to the vibration of your fingers.. It works well for typing and is easily switchable between three different modes.. There are also two tactile paddles on the keyboard that provide a nice tactile feedback when you press the keys.. Its also designed to be easier to type ...

Tactile motion guidance systems aim to direct the users movement toward a target pose or trajectory by delivering tactile cues through lightweight wearabl

It is generally assumed that primary sensory neurons transmit information by their firing rates. However, during natural object manipulations, tactile information from the fingertips is used faster than can be readily explained by rate codes. Here we show that the relative timing of the first impuls …

Grip force control during robotic in-hand manipulation is usually modeled as a monolithic task, where complex controllers consider the placement of all fingers and the contact states between each finger and the gripped object in order to compute the necessary forces to be applied by each finger. Such approaches normally rely on object and contact models and do not generalize well to novel manipulation tasks. Here, we propose a modular grip stabilization method based on a proposition that explains how humans achieve grasp stability. In this biomimetic approach, independent tactile grip stabilization controllers ensure that slip does not occur locally at the engaged robot fingers. Local slip is predicted from the tactile signals of each fingertip sensor i.e., BioTac and BioTac SP by Syntouch. We show that stable grasps emerge without any form of central communication when such independent controllers are engaged in the control of multi-digit robotic hands. The resulting grasps are resistant to ...

Tactile Pattern Delivery Device to Investigate Cognitive Mechanisms for Early Detection of Alzheimers Disease: 10.4018/978-1-60960-559-9.ch011: The cognitive symptoms in early Alzheimers disease (AD) involve problems with learning, memory or planning. Currently, no medical tests are available to

17. The findings demonstrate significant correlations between CT activity and estimates of pleasantness when two different stimulus parameters were varied, that is, the speed of an object moving over the skin surface 26 Å. Vallbo et al. Fig. 17 Dependence of psychoneural relation on temperature of moving touch stimuli. Lefthand plot shows CT response (n = 8) to an object moving over the receptive field at different speeds. Three different object temperatures are color coded: black-neutral, red-warm, and blue-cool. B) Delayed acceleration of impulse discharge started after about 10 s. (a, b) Originate from the same recording displayed on different time scales After-Discharge and Tickle Hypothesis Long-lasting after-discharge in thin mechanoreceptive afferents was originally described by Zotterman (1939) in the cat and led him to formulate the tickle hypothesis, that is, that an essential role of unmyelinated tactile afferents is to account for the ticklish sensation associated with light touch. ...

A system and method for manipulating a virtual object based on intent is described. A reference identifier from a physical object is captured. The reference identifier is communicated via a network to a remote server. The remote server includes virtual object data associated with the reference identifier. The virtual object data is received at the computing device. The virtual image is displayed in a virtual landscape using the virtual object data. In response to relative movement between the computing device and the physical object caused by a user, the virtual image is modified. Brain activity data of the user is received. A state of the virtual object in the virtual landscape is changed based on the brain activity data.

A tactile sensor, computer readable medium, methods of using and manufacturing the tactile sensor, and methods and apparatuses for processing the information generated by the tactile sensor. The tacti

Techniques are disclosed for enhancing the quality of a displayed image using a tactile or other texture display. In particular, the disclosed techniques leverage active-texture display technology to enhance the quality of graphics by providing, for example, outlining and/or shading when presenting a given image, so as to create the effect of increased contrast and image quality and/or to reduce observable glare. These effects can be present even at high viewing angles and in environments of high light reflection. To these ends, one or more graphics processes, such as edge-detection and/or shading, may be applied to an image to be displayed. In turn, an actuator element (e.g., microelectromechanical systems, or MEMS, devices) of the tactile display may be manipulated (e.g., in Z-height) to provide fine-grain adjustment of image attributes such as: pixel brightness/intensity; pixel color; edge highlighting; object outlining; effective shading; image contrast; and/or viewing angle.

in response to message #1 by David. Hi David,. I would (very strongly) advise against a bath in anything!. At some risk to the feel of the keys on some hp calcs (e.g. 41) you can use CRC brand Contact Cleaner in minimal amounts. It is very gentle but used on the older hp calcs like the 41 the keys lose their tactile feedback quality when the spray is applied. As the plastic components dry out (rapidly!) some of this tactile feedback characteristic recovers. At least the keys then operate! They feel a little spongy, though and dont make a clicking sound. A small price to pay for a functional keyboard.. Never use any detergents at all (!). If you want to run a small *risk and use ultrasonic cleaning in a fluid (I dont have access to such exotic stuff!) the only liquid to use is isopropyl alcohol. Distilled water sounds okay, but metal can be induced to oxidize. At least isopropanol is as inert as you are going to get.. *If liquid permeates between the LCD interconnects to a PCB, then often ...

A Bellsong for Sarah Raines by Bettie Cannon (Charles Scribners Sons, 1987; $12.95, 184 pages.)A gentle, lyrical novel for young readers, A Bellsong for Sarah Raines approaches such sophisticated

Tactile stimulation products are related to the sense of touch. Textures, sand tray, massage balls, rings, etc., help enhance a child's tactile stimulation.

Look at Dawnie Girl up there at the helm. Wow! Dawnie Girl is a Natural Helmswomen if ever there was such a person. Dawn helmed September Sea with her gentle touch... the kind of touch that September Sea falls in love with and responds with her best sailing performance. It was a blustery, really cool day (50s) and Dawn had the helm with 15 knots right on the vessels nose. Didnt bother Dawnie Girl one bit! Dawnie threaded the needle into the groove of the headwind, and guided September Sea back to Boot Key Harbor like threading a needle. We were very impressed! Dawnie showed no fear at all and had a blast as she felt September Sea respond to her gentle touch.. Woooooo Hooooo!! You Go, Dawnie Girl!!. I have always felt that generally, women are more suited to the Helm. We tend to have a much gentler touch and respond to a vessels slightest indications. Men, in general, do not have the fine tuning capabilities that females do. Of course there are generalities and we all know that some men have ...

Canadian researchers have created a touchy-feely robot that detects tougher tumor tissue for minimally invasive surgery with 40 percent more accuracy than a human.

At Elan Medical Skin Clinic, our Nurse Consultant has over 20 years experience in treating ageing lips. We often combine a combination of treatments to the lip and mouth area, in order to achieve a natural looking lips

Fredericksburg dentist, Dr. Gollapalli is dedicated to general, family, and cosmetic dentistry with services including dental exams, dental makeovers, dental implants, porcelain veneers, crowns, CEREC, Lumineers and more. Please call our dentist in Fredericksburg, VA to schedule your next appointment.

What are vaccinations and why is it given? Babies and young children are particularly vulnerable to infectious disease. By injecting your baby with a vaccine, the body develops its own immune response to that particular disease. This means that if he is later exposed to that disease, the body has already got its defense ready to protect him.…

VIRUSES and chemicals that cripple the immune system may seem like a deadly cocktail for anyone who is ill. But geneticists now say this combination may ac

A fully qualified and insured holistic therapist, introduced to the Bowen Technique in 2004 and qualifying in 2005 as well as in Reiki Therapy.

A fully qualified and insured holistic therapist, introduced to the Bowen Technique in 2004 and qualifying in 2005 as well as in Reiki Therapy.

To test the transmission limits of the brain-to-brain communication, the researchers placed an encoder rat in Brazil, at the Edmond and Lily Safra International Institute of Neuroscience of Natal (ELS-IINN), and transmitted its brain signals over the Internet to a decoder rat in Durham, North Carolina.. They found that the two rats could still work together on the tactile discrimination task.. So, even though the animals were on different continents, with the resulting noisy transmission and signal delays, they could still communicate, said Miguel Pais-Vieira, a postdoctoral fellow and first author of the study. This tells us that we could create a workable, network of animal brains distributed in many different locations.. Nicolelis concluded that These experiments showed that we have established a sophisticated, direct communication linkage between brains, and that the decoder brain is working as a pattern-recognition device. So basically, we are creating what I call an organic computer. ...

In a second experiment, the scientists found that some - but not all - of a population of young people that were born deaf also had impaired tactile acuity. But since there are about 70 known genes that are involved in hearing impairment, the researchers wanted to focus on a smaller group of genes to test the link between hearing and touch impairment ...

CiteSeerX - Document Details (Isaac Councill, Lee Giles, Pradeep Teregowda): parishtechfr This paper explores the impulsion and vibration properties of different tactile patterns These properties describe the unique states of the pins for example raised or lowered The tactile feedback is provided by Braille pins on a finger and is in the form of different patterns chosen for the experiments ...

This book presents dropwise condensation, a phenomenon frequently encountered in the power, process, and materials industry and is one of the most efficient routes of heat transfer. The authors explain long-term sustenance of drops over a textured surface.

The ribosome flow model with input and output (RFMIO) is a deterministic dynamical system that has been used to study the flow of ribosomes during mRNA translation. The RFMIO and its variants encapsulate important properties that are relevant to modeling ribosome flow such as the possible evolution of traffic jams and non-homogeneous elongation rates along the mRNA molecule, and can also be used for studying additional intracellular processes such as transcription, transport, and more. Here we consider networks of interconnected RFMIOs as a fundamental tool for modeling, analyzing and re-engineering the complex mechanisms of protein production. In these networks, the output of each RFMIO may be divided, using connection weights, between several inputs of other RFMIOs. We show that under quite general feedback connections the network has two important properties: (1) it admits a unique steady-state and every trajectory converges to this steady-state, and (2) the problem of how to determine the ...

Jacono M, Gori M, Sciutti A, Sandini G, Burr D, 2008, Perception of acceleration and deceleration in visual, tactile and visuo-tactile stimuli Perception 37 ECVP Abstract Supplement, page 49 Perception of acceleration and deceleration in visual, tactile and visuo-tactile stimuli M Jacono, M Gori, A Sciutti, G Sandini, D Burr Psychophysical literature suggests that the human visual system is more sensitive to speed than acceleration (the temporal derivative of velocity). However few studies consider tactile perception of acceleration and none of them analyzes the visual - tactile modality. Here we investigated visual, tactile and bimodal perception of acceleration/deceleration by measuring speed discrimination over a wide range of transient speeds (from 6.8 to 454 cm s-1). The stimuli were physical wheels etched with sinewave profile. They could be seen, felt or concurrently seen and felt. Subjects were presented sequentially with the standard stimulus, characterized by a fixed final velocity ...

Investigation of acceptable dose of mobilisation and Tactile Stimulation (MTS) to enhance upper limb recovery after stroke. A Phase 1 trial.. The scientific evidence indicates that upper limb movement recovery may be enhanced with the appropriate dose of afferent (sensorimotor) stimulation normally arising from functional activities such as grasping a cup. Even if the appropriate dose was known, people with substantial paresis (muscle weakness) would not be able to participate repetitively in functional training. For these people Mobilisation and Tactile Stimulation (MTS) therapy might enhance upper limb (arm and hand) recovery.. The key question is: in patients with substantial paresis early after stroke which dose of therapy has the best effect for the least adverse effects?. Participants were randomised to 1 of 4 groups:. ...

Delta motion named by Korte occurs when second stimulus much more intense than first. Motion perceived in wrong direction! Also occurs in tactile and auditory (Burtt 1917) ...

Pleasantness is generally overlooked when investigating tactile functions. Addition of a pleasant stimulus could allow for a more complete characterisation

US researchers say they have developed a formula for accurately simulating softness, opening the way to create more realistic touch sensations in electronic skin, prostheses or medical robotics. Writing in the journal Science Advances, a team of engineers and psychologists from the University of California San Diego describe experiments that led to the development of equations that can calculate how soft or hard a material will feel based on material thickness, Youngs modulus (a measure of a materials stiffness), and micropatterned areas. They can also do the reverse and calculate, for example, how thick or micropatterned a material needs to be to feel a certain level of softness.. We found an explicit relationship between the perceived softness of an object and its geometric properties, the authors write. Using this approach, it is possible to design objects for human interaction with a desired level of perceived softness.. Whats interesting about this, adds Charles Dhong, who co-led ...