The design and evaluation of a multi-sensory vibrotactile feedback system for a myoelectric prosthetic hand

2011 ◽  
Vol 1 (4) ◽  
pp. 225 ◽  
Author(s):  
Edward D. Sellers ◽  
Alan W.L. Chiu
Keyword(s):  
Feedback System ◽  
Prosthetic Hand ◽  
Vibrotactile Feedback

Vibrotactile Feedback System from the Fingertip to the Temples for Perceptual Enhancement of Contracture Palpation

2021 ◽  
pp. 1-1
Author(s):  
Kazuhiro Niwa ◽  
Yoshihiro Tanaka ◽  
Kota Kitamichi ◽  
Takumi Kuhara ◽  
Kimihiro Uemura ◽  
...  
Keyword(s):  
Feedback System ◽  
Vibrotactile Feedback

scholarly journals Basic study of vibrotactile sensory feedback system for biomimetic powered-prosthetic hand

1996 ◽  
Vol 116 (11) ◽  
pp. 1246-1251 ◽  
Author(s):  
Ryuhei Okuno ◽  
Masaki Yoshida ◽  
Takanori Uchiyama ◽  
Kenzo Akazawa
Keyword(s):  
Sensory Feedback ◽  
Feedback System ◽  
Prosthetic Hand ◽  
Basic Study

scholarly journals Assessment of Intuitiveness and Comfort of Wearable Haptic Feedback Strategies for Assisting Level and Stair Walking

Electronics ◽  
2020 ◽  
Vol 9 (10) ◽  
pp. 1676
Author(s):  
Ilaria Cesini ◽  
Giacomo Spigler ◽  
Sahana Prasanna ◽  
Jessica D’Abbraccio ◽  
Daniela De Luca ◽  
...  
Keyword(s):  
Clinical Trials ◽  
Haptic Feedback ◽  
Ground Level ◽  
Feedback System ◽  
Evaluation Procedure ◽  
Vibrotactile Feedback ◽  
Foot Placement ◽  
Feedback Strategies ◽  
Stair Walking ◽  
Design And Testing

Nowadays, lower-limb prostheses are reaching real-world usability especially on ground-level walking. However, some key tasks such as stair walking are still quite demanding. Providing haptic feedback about the foot placement on the steps might reduce the cognitive load of the task, compensating for increased dependency on vision and lessen the risk of falling. Experiments on intact subjects can be useful to define the feedback strategies prior to clinical trials, but effective methods to assess the efficacy of the strategies are few and usually rely on the emulation of the disability condition. The present study reports on the design and testing of a wearable haptic feedback system in a protocol involving intact subjects to assess candidate strategies to be adopted in clinical trials. The system integrated a sensorized insole wirelessly connected to a textile waist belt equipped with three vibrating motors. Three stimulation strategies for mapping the insole pressure data to vibrotactile feedback were implemented and compared in terms of intuitiveness and comfort perceived during level and stair walking. The strategies were ranked using a relative rating approach, which highlighted the differences between them and suggested guidelines for their improvement. The feedback evaluation procedure proposed could facilitate the selection and improvement of haptic feedback strategies prior to clinical testing.

scholarly journals Modeling and Analysis of a Visual Feedback System to Support Efficient Object Grasping of an EMG-Controlled Prosthetic Hand

2019 ◽  
Vol 5 (1) ◽  
pp. 207-210
Author(s):  
Tolgay Kara ◽  
Ahmad Soliman Masri
Keyword(s):  
Visual Feedback ◽  
Low Cost ◽  
Feedback System ◽  
Hand Gesture ◽  
Human Hand ◽  
Prosthetic Hand ◽  
Modeling And Analysis ◽  
Prosthetic Hands ◽  
Prosthetic Limbs ◽  
Computer Environment

AbstractMillions of people around the world have lost their upper limbs mainly due to accidents and wars. Recently in the Middle East, the demand for prosthetic limbs has increased dramatically due to ongoing wars in the region. Commercially available prosthetic limbs are expensive while the most economical method available for controlling prosthetic limbs is the Electromyography (EMG). Researchers on EMG-controlled prosthetic limbs are facing several challenges, which include efficiency problems in terms of functionality especially in prosthetic hands. A major issue that needs to be solved is the fact that currently available low-cost EMG-controlled prosthetic hands cannot enable the user to grasp various types of objects in various shapes, and cannot provide the efficient use of the object by deciding the necessary hand gesture. In this paper, a computer vision-based mechanism is proposed with the purpose of detecting and recognizing objects and applying optimal hand gesture through visual feedback. The objects are classified into groups and the optimal hand gesture to grasp and use the targeted object that is most efficient for the user is implemented. A simulation model of the human hand kinematics is developed for simulation tests to reveal the efficacy of the proposed method. 80 different types of objects are detected, recognized, and classified for simulation tests, which can be realized by using two electrodes supplying the input to perform the action. Simulation results reveal the performance of proposed EMG-controlled prosthetic hand in maintaining optimal hand gestures in computer environment. Results are promising to help disabled people handle and use objects more efficiently without higher costs.

Results of an Internet survey of myoelectric prosthetic hand users

2007 ◽  
Vol 31 (4) ◽  
pp. 362-370 ◽  
Author(s):  
Christian Pylatiuk ◽  
Stefan Schulz ◽  
Leonhard Döderlein
Keyword(s):  
Upper Limb ◽  
Force Feedback ◽  
Index Finger ◽  
Feedback System ◽  
Internet Survey ◽  
Personal Hygiene ◽  
Prosthetic Hand ◽  
Hand Prosthesis ◽  
Myoelectric Prostheses ◽  
High Level

The results of a survey of 54 persons with upper limb amputations who anonymously completed a questionnaire on an Internet homepage are presented. The survey ran for four years and the participants were divided into groups of females, males, and children. It was found that the most individuals employ their myoelectric hand prosthesis for 8 hours or more. However, the survey also revealed a high level of dissatisfaction with the weight and the grasping speed of the devices. Activities for which prostheses should be useful were stated to include handicrafts, personal hygiene, using cutlery, operation of electronic and domestic devices, and dressing/undressing. Moreover, additional functions, e.g., a force feedback system, independent movements of the thumb, the index finger, and the wrist, and a better glove material are priorities that were identified by the users as being important improvements the users would like to see in myoelectric prostheses.

Development of Sensory Feedback System for Myoelectric Prosthetic Hand

2015 ◽  
Vol 32 (10) ◽  
pp. 851-856
Author(s):  
Ju-Hwan Bae ◽  
Sung Yoon Jung ◽  
Shinki Kim ◽  
Museong Mun ◽  
Chang-Yong Ko
Keyword(s):  
Sensory Feedback ◽  
Feedback System ◽  
Prosthetic Hand

Examination of Tactor Configurations for the Design of Vibrotactile Feedback Systems for Use in Lower-Limb Prostheses

2018 ◽  
Author(s):  
Sam Shi ◽  
Matthew J. Leineweber ◽  
Jan Andrysek
Keyword(s):  
Lower Limb ◽  
Negative Relationship ◽  
Feedback System ◽  
Elevated Pressure ◽  
Intensity Level ◽  
Response Accuracy ◽  
Feedback Systems ◽  
Vibrotactile Feedback ◽  
Lower Limb Prosthesis ◽  
Lower Limb Prostheses

Vibrotactile feedback may be able to compensate for the loss of sensory input in lower-limb prosthesis users. Designing an effective vibrotactile feedback system would require that users could perceive and correctly respond to vibrotactile stimuli applied by the tactors. Our study explored three key tactor configuration variables (i.e. vibratory intensity, prosthetic pressure, spacing between adjacent tactors) through two experiments. The vibration propagation experiment investigated the effects of tactor configurations on vibratory amplitude at the prosthesis-limb interface. Results revealed a positive relationship between vibratory amplitude and intensity, and a negative relationship between vibratory amplitude and prosthetic pressure. The vibrotactile perception experiment investigated the effects of tactor configurations on user response accuracy, and found that greater spacing between tactors, and higher prosthetic pressure resulted in more accurate responses from the subjects. These findings inform the design of a vibrotactile feedback system for use in lower-limb prostheses: 1) the tactors may be best placed in areas of slightly elevated pressure at the prosthesis-limb interface; 2) a higher vibratory intensity level should improve performance for vibrotactile feedback systems; and 3) more spacing between adjacent tactors improves user response accuracy.

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