Non-invasive control of neuroprostheses for the upper extremity: Temporal coding of brain patterns

2009 ◽  
Author(s):  
G.R. Muller-Putz ◽  
R. Scherer ◽  
G. Pfurtscheller ◽  
C. Neuper ◽  
R. Rupp
Keyword(s):  
Upper Extremity ◽  
Temporal Coding ◽  
Non Invasive ◽  
Invasive Control

scholarly journals Advanced Micro-Actuator/Robot Fabrication Using Ultrafast Laser Direct Writing and Its Remote Control

2020 ◽  
Vol 10 (23) ◽  
pp. 8563
Author(s):  
Sangmo Koo
Keyword(s):  
Three Dimensional ◽  
Processing Technique ◽  
Direct Writing ◽  
Laser Direct Writing ◽  
Precise Control ◽  
Two Photon ◽  
Non Invasive ◽  
Acoustic Control ◽  
Fs Laser ◽  
Invasive Control

Two-photon polymerization (TPP) based on the femtosecond laser (fs laser) direct writing technique in the realization of high-resolution three-dimensional (3D) shapes is spotlighted as a unique and promising processing technique. It is also interesting that TPP can be applied to various applications in not only optics, chemistry, physics, biomedical engineering, and microfluidics but also micro-robotics systems. Effort has been made to design innovative microscale actuators, and research on how to remotely manipulate actuators is also constantly being conducted. Various manipulation methods have been devised including the magnetic, optical, and acoustic control of microscale actuators, demonstrating the great potential for non-contact and non-invasive control. However, research related to the precise control of microscale actuators is still in the early stages, and in-depth research is needed for the efficient control and diversification of a range of applications. In the future, the combination of the fs laser-based fabrication technique for the precise fabrication of microscale actuators/robots and their manipulation can be established as a next-generation processing method by presenting the possibility of applications to various areas.

8C24 Non-invasive control of cell migration based on cell-substrate interaction

2012 ◽  
Vol 2012.24 (0) ◽  
pp. _8C24-1_-_8C24-2_
Author(s):  
Hiromi MIYOSHI ◽  
Jungmyoung JU ◽  
Sang Min LEE ◽  
Dong Jin CHO ◽  
Jong Soo KO ◽  
...  
Keyword(s):  
Cell Migration ◽  
Non Invasive ◽  
Substrate Interaction ◽  
Cell Substrate ◽  
Invasive Control

Quantitative Microwave Tomography for Non-invasive Control of Hyperthermia. Preliminary Numerical Results

1991 ◽  
Vol 39 (4) ◽  
pp. 149-153 ◽  
Author(s):  
N. Joachimowicz ◽  
I.C. Bolomey ◽  
C. Pichot ◽  
A. Franchois ◽  
I.P. Hugonint ◽  
...  
Keyword(s):  
Numerical Results ◽  
Microwave Tomography ◽  
Non Invasive ◽  
Invasive Control

scholarly journals Comparative Study of Ultrasound Doppler and 128-Multi-Detector CT in Assessment of Upper Extremity Ischemia in High-Risk Patients

2020 ◽  
Vol 11 (4) ◽  
pp. 7014-7020
Author(s):  
Afaf M. Eladl ◽  
Mona M. Eladl ◽  
Rania M. Hassan ◽  
Ahmed M. Gomaa ◽  
Hanan A. Bahaaeldin
Keyword(s):  
Upper Extremity ◽  
Radiology Department ◽  
Conventional Angiography ◽  
Non Invasive ◽  
Significant Difference ◽  
Risk Patients ◽  
Colour Changes ◽  
A Prospective Study ◽  
Invasive Techniques ◽  
Extremity Ischemia

Ischemia at the upper extremity is considered one of the disabling and frequent causes of blind medical care failure. Non- invasive techniques as CTA and Doppler could effectively determine stenosis grades up to occlusion of the upper extremity, particularly if they impact the vessels proximal to the wrist also they can characterise the thrombus characters and recanalisation. The study was a prospective study carried out on 30 patients with upper extremity ischemia during the period from April 2019 to April 2020 at the Radiology department of ZagazigUniversity hospitals. All patients presented with signs of ischemia as claudication, colour changes, pulselessness and their age ranged between 45 to 70 years. All patients underwent complete history taking and clinical examination, the results were correlated to conventional angiography. Overall, in the present study, Doppler US has a sensitivity of 86.6 %, a specificity of 100%, PVP of 100% and PVN of 91.3%. CTA has a sensitivity of 93.3 %, the specificity of 100%, PVP of 100% and PVN of 95.45 %.CTA was more sensitive in milder degrees (Grades I& II) of thromboembolism and stenosis but no significant difference in severe cases (Grades III &IV). Segmental length assessment and collateral circulation were better noted on CT Angiography.

Non invasive control and scoring of psoriasis severity

2019 ◽  
Author(s):  
Taoufik El Kabir ◽  
Benjamin Bringier ◽  
Majdi Khoudeir ◽  
Jean claude Lecron ◽  
Franck Morel ◽  
...  
Keyword(s):  
Non Invasive ◽  
Invasive Control ◽  
Psoriasis Severity

scholarly journals Non-Invasive Stimulation-Based Tactile Sensation for Upper-Extremity Prosthesis: A Review

2017 ◽  
Vol 17 (9) ◽  
pp. 2625-2635 ◽  
Author(s):  
Kairu Li ◽  
Yinfeng Fang ◽  
Yu Zhou ◽  
Honghai Liu
Keyword(s):  
Upper Extremity ◽  
Tactile Sensation ◽  
Non Invasive

scholarly journals Vibration Propagation on the Skin of the Arm

2019 ◽  
Vol 9 (20) ◽  
pp. 4329 ◽  
Author(s):  
Valay A. Shah ◽  
Maura Casadio ◽  
Robert A. Scheidt ◽  
Leigh A. Mrotek
Keyword(s):  
Upper Extremity ◽  
Performance Feedback ◽  
Small Distance ◽  
Vibrotactile Feedback ◽  
Non Invasive ◽  
Hairy Skin ◽  
Machine Interface ◽  
Vibration Perception

Vibrotactile interfaces are an inexpensive and non-invasive way to provide performance feedback to body-machine interface users. Interfaces for the upper extremity have utilized a multi-channel approach using an array of vibration motors placed on the upper extremity. However, for successful perception of multi-channel vibrotactile feedback on the arm, we need to account for vibration propagation across the skin. If two stimuli are delivered within a small distance, mechanical propagation of vibration can lead to inaccurate perception of the distinct vibrotactile stimuli. This study sought to characterize vibration propagation across the hairy skin of the forearm. We characterized vibration propagation by measuring accelerations at various distances from a source vibration of variable intensities (100–240 Hz). Our results showed that acceleration from the source vibration was present at a distance of 4 cm at intensities >150 Hz. At distances greater than 8 cm from the source, accelerations were reduced to values substantially below vibrotactile discrimination thresholds for all vibration intensities. We conclude that in future applications of vibrotactile interfaces, stimulation sites should be separated by a distance of at least 8 cm to avoid potential interference in vibration perception caused by propagating vibrations.

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