Search found 14 matches

by Kostas Risvas
Thu Feb 13, 2025 12:43 am
Forum: OpenSim Moco
Topic: Moco Track and external stimulation
Replies: 5
Views: 610

Re: Moco Track and external stimulation

Hi Nicholas. This is what I was afraid of. Even with a simple model the outer-loop optimization direction seems intimidating to me. Maybe I will stick to the solution I currently have and try to track down the problem adopting a sensitivity analysis approach. Kind regards and thanks a lot for your s...
by Kostas Risvas
Tue Feb 11, 2025 7:22 am
Forum: OpenSim Moco
Topic: Moco Track and external stimulation
Replies: 5
Views: 610

Re: Moco Track and external stimulation

Greetings again, I have managed to model external excitations for certain muscles using the moco control tracking goal and the prescribed controller method. Therefore, i track a reference motion of a patient and observe how different signals change the kinematics. I would like to ask the following. ...
by Kostas Risvas
Thu Sep 05, 2024 1:25 am
Forum: OpenSim Moco
Topic: Moco Track and external stimulation
Replies: 5
Views: 610

Re: Moco Track and external stimulation

Hi Nick,

thanks a lot for your prompt and detailed reply. I will give it a try and see how things go.

Best,
Kostas
by Kostas Risvas
Wed Sep 04, 2024 3:25 am
Forum: OpenSim Moco
Topic: Moco Track and external stimulation
Replies: 5
Views: 610

Moco Track and external stimulation

Greetings everyone, I have some kinematic data of post-stroke patients and i would like to investigate possible rehabilitation strategies. I would like to know if i can use Moco Track and somehow model external stimulation effect (mimicking FES for example) to study how this affects (improves or not...
by Kostas Risvas
Wed Feb 03, 2021 12:01 am
Forum: Open Knee: A Three-Dimensional Finite Element Representation of the Knee Joint
Topic: Kinematics data channel name conventions
Replies: 4
Views: 1951

Re: Kinematics data channel name conventions

Greetings again, I have one more question. Navigating through the kinematics data provided, I noticed that for some subjects there are multiple passive flexion records (e.g oks008). I guess this is for optimizing the femoral coordinate system as it is described in the readme.txt. I would like to ask...
by Kostas Risvas
Mon Jan 25, 2021 1:38 am
Forum: Open Knee: A Three-Dimensional Finite Element Representation of the Knee Joint
Topic: Kinematics data channel name conventions
Replies: 4
Views: 1951

Re: Kinematics data channel name conventions

Dear Dr Erdemir,

Thanks a lot for your prompt answer and the provided links.

Kind regards,
Kostas

----
Konstantinos Risvas
Dipl.-Ing. MSc Electrical and Computer Engineer
Research Associate, VVR group
Department of Electrical and Computer Engineering
University of Patras
26500, Rio-Patras, Greece
by Kostas Risvas
Fri Jan 22, 2021 2:17 am
Forum: Open Knee: A Three-Dimensional Finite Element Representation of the Knee Joint
Topic: Kinematics data channel name conventions
Replies: 4
Views: 1951

Kinematics data channel name conventions

Greetings everyone, I would like to ask a question about the name conventions in the provided kinematics data (tdms files). From what I have seen in the specifications, the data are recorded with the tibia fixed and the femur free. If that is indeed the case, then the 'Posterior Translation" channel...
by Kostas Risvas
Sat May 30, 2020 3:53 pm
Forum: SCONE
Topic: ReactionForceMeasure range issue
Replies: 1
Views: 290

ReactionForceMeasure range issue

Greetings, When applying the ReactionForceMeasure and trying to define the valid force range, SCONE comes up with an "Invalid scenario settings" message. This happens only if i add the range parameter, e.g. ReactionForceMeasure { range = {min = 1000 max = 2000} start_time = 0.2 minimize = true } In ...
by Kostas Risvas
Sat May 30, 2020 3:44 pm
Forum: SCONE
Topic: Scenario optimization: waiting for first evaluation
Replies: 9
Views: 29426

Re: Scenario optimization: waiting for first evaluation

I managed to overcome this issue by setting the parameter "Perform optimization using external process" to 0, under the Tools/Preferences/User Interface tab.