WORK Download Middle Finger Cursor
Alana Daughenbaugh
An ergonomically designed gaming device for a user that includes a semi-flattened hemispherical ovoid base, that is contoured into a general hand imprint shape with finger and thumb grooves and fingertip provisions to accommodate the user's index finger, middle finger, ring finger, little finger and thumb. A plurality of adjustment screws on the thumb side allows for tilting adjustments for the general hand imprint shape. A plurality of tactile buttons and dual rocker switches are provided in the fingertip recesses for the user to operate functions normally performed from a keyboard in a computer game.
Our results in [9] suggested that four training sessions were enough to determine if a training paradigm was effective. For this reason, in this follow-up study, Subjects 2 to 7 were subjected to four sessions of a training paradigm that included FES during the stimulus presentation, as well as visual feedback in the cursor task stage (except for Subject 6, who completed five sessions). Subject 5 was the one who received FES training that did not include video, as we previously mentioned in Section 2.2.1.
The use of conventional interfaces employing wired electrodes and a wired amplifier is limited by the length of the connecting wires, and is restricted to persons who never suffer from involuntary limb actions. Therefore persons with physical disabilities such as cerebral palsy have little or no access to biosignal-based human-computer or human-machine interfaces. In addition, deaf-blind people cannot use a computer and accordingly, also have only little access to human interfaces. One method to communicate with those people is finger Braille, which uses tactile sensation. Some deaf-blind people can communicate with others through a finger Braille interpreter. Because finger Braille uses a code similar to Braille, it is relatively easy to develop an electro-mechanical device for finger Braille. Actually, there exist some studies aiming at developing a system which can automatically convert a text into tactile information and vice versa and function as interpreter [13,14]. To communicate more smoothly using such a system, understanding the prosody (rhythm and stress) of natural finger Braille is important.
In this paper, we have proposed a compact wireless Laplacian electrode module for EMG and apply it to character-input interface and evaluation of finger Braille typing. In our previous study, we proposed the Laplacian electrode configuration for EMG recording [15]. However, the developed system in [15] was not wireless, and it was not validated through any actual application. Although we confirmed synchronous firings with the Laplacian and conventional EMGs, we did not address the difference in characteristics as input for human interface. Our primary aim here was to demonstrate that the Laplacian EMG was better than the conventional EMG in actual human interface applications.
Execution screens of the character-input software with a scanning cursor. (a) Horizontal and (b) Vertical scanning modes. For those who are not familiar with Japanese characters, the main idea presented in this figure was reproduced in alphabets in Figure A1.
One finger Braille interpreter, who has worked as an interpreter for more than 20 years, participated in an experiment for finger movement detection. He gave written informed consent. The interpreter translated three news articles of about 130 characters in Japanese (when read it took about 20 s) into finger Braille. The same translation was performed three times, and the average translation rate was 6.37 characters/s.
Arrangement of the wireless electrodes and the disposable electrodes for detection of finger movements during finger Braille typing. Four Laplacian modules, two on each flexor carpi ulnaris muscle, were attached to the finger Braille interpreter.
Two scanning modes of the character-input software with a scanning cursor. (a) Horizontal and (b) Vertical scanning modes. The information presented in this figure was reproduced from Figure 5.
Learn your scales! There is one particular pace where the scale can be played in more than two octaves, over all the strings. For example, A major encompasses frets 4 to 7. Using one finger per fret, and certainly not sliding up or down, each diatonicc note will be the product of a certain finger on a certain fret on a certain string.
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