scholarly journals Closed-loop optical stimulation and recording system with GPU-based real-time spike sorting

2014 ◽  
Author(s):  
Ling Wang ◽  
Thoa Nguyen ◽  
Henrique Cabral ◽  
Barbara Gysbrechts ◽  
Francesco Battaglia ◽  
...  
Keyword(s):  
Real Time ◽  
Closed Loop ◽  
Recording System ◽  
Spike Sorting ◽  
Optical Stimulation

A Multichannel Recording System with Optical Stimulation for Closed-Loop Optogenetic Experiments

2016 ◽  
pp. 333-344 ◽  
Author(s):  
Carmen Bartic ◽  
Francesco P. Battaglia ◽  
Ling Wang ◽  
Thoa T. Nguyen ◽  
Henrique Cabral ◽  
...  
Keyword(s):  
Closed Loop ◽  
Recording System ◽  
Optical Stimulation ◽  
Multichannel Recording

scholarly journals Closed-loop optical neural stimulation based on a 32-channel low-noise recording system with online spike sorting

2014 ◽  
Vol 11 (4) ◽  
pp. 046005 ◽  
Author(s):  
T K T Nguyen ◽  
Z Navratilova ◽  
H Cabral ◽  
L Wang ◽  
G Gielen ◽  
...  
Keyword(s):  
Closed Loop ◽  
Low Noise ◽  
Neural Stimulation ◽  
Recording System ◽  
Spike Sorting ◽  
Optical Neural Stimulation

scholarly journals Motorized Treadmill and Optical Recording System for Gait Analysis of Grasshoppers

Sensors ◽  
2021 ◽  
Vol 21 (17) ◽  
pp. 5953
Author(s):  
Leslie Barreto ◽  
Ahnsei Shon ◽  
Derrick Knox ◽  
Hojun Song ◽  
Hangue Park ◽  
...  
Keyword(s):  
Pilot Study ◽  
Gait Analysis ◽  
Real Time ◽  
Closed Loop ◽  
Walking Speed ◽  
Optical Recording ◽  
Recording System ◽  
Model Systems ◽  
Gait Kinematics ◽  
Quantitative Gait Analysis

(1) Background: Insects, which serve as model systems for many disciplines with their unique advantages, have not been extensively studied in gait research because of the lack of appropriate tools and insect models to properly study the insect gaits. (2) Methods: In this study, we present a gait analysis of grasshoppers with a closed-loop custom-designed motorized insect treadmill with an optical recording system for quantitative gait analysis. We used the eastern lubber grasshopper, a flightless and large-bodied species, as our insect model. Gait kinematics were recorded and analyzed by making three grasshoppers walk on the treadmill with various speeds from 0.1 to 1.5 m/s. (3) Results: Stance duty factor was measured as 70–95% and decreased as walking speed increased. As the walking speed increased, the number of contact legs decreased, and diagonal arrangement of contact was observed at walking speed of 1.1 cm/s. (4) Conclusions: This pilot study of gait analysis of grasshoppers using the custom-designed motorized insect treadmill with the optical recording system demonstrates the feasibility of quantitative, repeatable, and real-time insect gait analysis.

A Playbook(trademark) for Real-Time, Closed-Loop Control

2005 ◽  
Author(s):  
Harry Funk ◽  
Robert Goldman ◽  
Christopher Miller ◽  
John Meisner ◽  
Peggy Wu
Keyword(s):  
Real Time ◽  
Closed Loop ◽  
Closed Loop Control ◽  
Loop Control

scholarly journals Evaluation of Optimal Vibrotactile Feedback for Force-Controlled Upper Limb Myoelectric Prostheses

Sensors ◽  
2019 ◽  
Vol 19 (23) ◽  
pp. 5209 ◽  
Author(s):  
Andrea Gonzalez-Rodriguez ◽  
Jose L. Ramon ◽  
Vicente Morell ◽  
Gabriel J. Garcia ◽  
Jorge Pomares ◽  
...  
Keyword(s):  
Real Time ◽  
Upper Limb ◽  
Closed Loop ◽  
Fine Tuning ◽  
Vibrotactile Feedback ◽  
Loop Control ◽  
Myoelectric Prostheses ◽  
Amplitude Level ◽  
Real Time Application ◽  
Selection Of

The main goal of this study is to evaluate how to optimally select the best vibrotactile pattern to be used in a closed loop control of upper limb myoelectric prostheses as a feedback of the exerted force. To that end, we assessed both the selection of actuation patterns and the effects of the selection of frequency and amplitude parameters to discriminate between different feedback levels. A single vibrotactile actuator has been used to deliver the vibrations to subjects participating in the experiments. The results show no difference between pattern shapes in terms of feedback perception. Similarly, changes in amplitude level do not reflect significant improvement compared to changes in frequency. However, decreasing the number of feedback levels increases the accuracy of feedback perception and subject-specific variations are high for particular participants, showing that a fine-tuning of the parameters is necessary in a real-time application to upper limb prosthetics. In future works, the effects of training, location, and number of actuators will be assessed. This optimized selection will be tested in a real-time proportional myocontrol of a prosthetic hand.

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