Testing manual dexterity using a virtual reality simulator: reliability and validity

2013 ◽  
Vol 17 (3) ◽  
pp. 138-142 ◽  
Author(s):  
G. Ben-Gal ◽  
E. I. Weiss ◽  
N. Gafni ◽  
A. Ziv
Keyword(s):  
Virtual Reality ◽  
Reliability And Validity ◽  
Manual Dexterity ◽  
Virtual Reality Simulator

scholarly journals Development of a Virtual Reality Simulator for an Intelligent Robotic System Used in Ankle Rehabilitation

Sensors ◽  
2021 ◽  
Vol 21 (4) ◽  
pp. 1537
Author(s):  
Florin Covaciu ◽  
Adrian Pisla ◽  
Anca-Elena Iordan
Keyword(s):  
Virtual Reality ◽  
Muscle Activity ◽  
Human Subject ◽  
Robotic System ◽  
Virtual Reality Simulator ◽  
Robotic Rehabilitation ◽  
Rehabilitation Process ◽  
Leg Muscles ◽  
Ankle Rehabilitation ◽  
And Control

The traditional systems used in the physiotherapy rehabilitation process are evolving towards more advanced systems that use virtual reality (VR) environments so that the patient in the rehabilitation process can perform various exercises in an interactive way, thus improving the patient’s motivation and reducing the therapist’s work. The paper presents a VR simulator for an intelligent robotic system of physiotherapeutic rehabilitation of the ankle of a person who has had a stroke. This simulator can interact with a real human subject by attaching a sensor that contains a gyroscope and accelerometer to identify the position and acceleration of foot movement on three axes. An electromyography (EMG) sensor is also attached to the patient’s leg muscles to measure muscle activity because a patient who is in a worse condition has weaker muscle activity. The data collected from the sensors are taken by an intelligent module that uses machine learning to create new levels of exercise and control of the robotic rehabilitation structure of the virtual environment. Starting from these objectives, the virtual reality simulator created will have a low dependence on the therapist, this being the main improvement over other simulators already created for this purpose.

scholarly journals Virtual-Reality Simulator System for Double Interventional Cardiac Catheterization Using Fractional-Order Vascular Access Tracker and Haptic Force Producer

2015 ◽  
Vol 2015 ◽  
pp. 1-12 ◽  
Author(s):  
Guan-Chun Chen ◽  
Chia-Hung Lin ◽  
Chien-Ming Li ◽  
Kai-Sheng Hsieh ◽  
Yi-Chun Du ◽  
...  
Keyword(s):  
Cardiovascular Disease ◽  
Virtual Reality ◽  
Fractional Order ◽  
Cardiac Catheterization ◽  
Vascular Access ◽  
Vessel Wall ◽  
Virtual Reality Simulator ◽  
Pigtail Catheter ◽  
Frictional Feedback ◽  
Vr Simulator

This study proposes virtual-reality (VR) simulator system for double interventional cardiac catheterization (ICC) using fractional-order vascular access tracker and haptic force producer. An endoscope or a catheter for diagnosis and surgery of cardiovascular disease has been commonly used in minimally invasive surgery. It needs specific skills and experiences for young surgeons or postgraduate year (PGY) students to operate a Berman catheter and a pigtail catheter in the inside of the human body and requires avoiding damaging vessels. To improve the training in inserting catheters, a double-catheter mechanism is designed for the ICC procedures. A fractional-order vascular access tracker is used to trace the senior surgeons’ consoled trajectories and transmit the frictional feedback and visual feedback during the insertion of catheters. Based on the clinical feeling through the aortic arch, vein into the ventricle, or tortuous blood vessels, haptic force producer is used to mock the elasticity of the vessel wall using voice coil motors (VCMs). The VR establishment with surgeons’ consoled vessel trajectories and hand feeling is achieved, and the experimental results show the effectiveness for the double ICC procedures.

scholarly journals Construct, Face, and Content Validation on Voxel-Man® Simulator for Otologic Surgical Training

2017 ◽  
Vol 2017 ◽  
pp. 1-8 ◽  
Author(s):  
M. Varoquier ◽  
C. P. Hoffmann ◽  
C. Perrenot ◽  
N. Tran ◽  
C. Parietti-Winkler
Keyword(s):  
Virtual Reality ◽  
Construct Validity ◽  
Surgical Training ◽  
Teaching Methods ◽  
Traditional Teaching ◽  
Virtual Reality Simulator ◽  
Expert Group ◽  
Traditional Teaching Methods ◽  
The Face ◽  
Nose And Throat

Objective. To assess the face, content, and construct validity of the Voxel-Man TempoSurg Virtual Reality simulator. Participants and Methods. 74 ear, nose, and throat (ENT) surgeons participated. They were assigned to one of two groups according to their level of expertise: the expert group (n=16) and the novice group (n=58). The participants performed four temporal bone dissection tasks on the simulator. Performances were assessed by a global score and then compared to assess the construct validity of the simulator. Finally, the expert group assessed the face and content validity by means of a five-point Likert-type scale. Results. experienced surgeons performed better (p<.01) and faster (p<.001) than the novices. However, the groups did not differ in terms of bone volume removed (p=.11) or number of injuries (p=.37). 93.7% of experienced surgeons stated they would recommend this simulator for anatomical learning. Most (87.5%) also thought that it could be integrated into surgical training. Conclusion. The Voxel-Man TempoSurg Virtual Reality simulator constitutes an interesting complementary tool to traditional teaching methods for training in otologic surgery.

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