Different frequencies in electrodes
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wrote on 29 Jan 2020, 16:44 last edited by
Sorry, to clarify, in order to set up the two different frequencies to model temporal interference, are we supposed to go into LF - Electro Quasi Static Simulation -> Setup -> Frequency? Or is this not the correct way to change the frequency?
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Hello dstoupis,
I believe you aim to model the so-called temporal interference. The is a tool in Sim4Life for this called Max Modulation. You need two simulation with the same grid. Then you can multi-select the two fields in the Output View (each from one simulation) to have the Max Modulation button appear in the Ribbon.
Best,
Habibwrote on 29 Jan 2020, 17:44 last edited by dstoupis@Habib said in Different frequencies in electrodes:
Hello dstoupis,
I believe you aim to model the so-called temporal interference. The is a tool in Sim4Life for this called Max Modulation. You need two simulation with the same grid. Then you can multi-select the two fields in the Output View (each from one simulation) to have the Max Modulation button appear in the Ribbon.
Best,
HabibThank you @Habib!
It was a simple selection of the two "Overall Fields" to have the "Max Modulation" tool show up! It helps a lot, since extracting the data and the processing it using Python to superimpose the fields and get the corresponding graphs, takes a lot of time.For future reference:
- Create two LF Electro Quasi-Static simulations one with the first desired frequency and another with the second desired frequency
- Use the same grid for the simulations (Grid point count must be the same)
- Run the simulations and extract the sensors
- Select the extracted sensors and magically the Max Modulation tool will appear
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@Habib said in Different frequencies in electrodes:
Hello dstoupis,
I believe you aim to model the so-called temporal interference. The is a tool in Sim4Life for this called Max Modulation. You need two simulation with the same grid. Then you can multi-select the two fields in the Output View (each from one simulation) to have the Max Modulation button appear in the Ribbon.
Best,
HabibThank you @Habib!
It was a simple selection of the two "Overall Fields" to have the "Max Modulation" tool show up! It helps a lot, since extracting the data and the processing it using Python to superimpose the fields and get the corresponding graphs, takes a lot of time.For future reference:
- Create two LF Electro Quasi-Static simulations one with the first desired frequency and another with the second desired frequency
- Use the same grid for the simulations (Grid point count must be the same)
- Run the simulations and extract the sensors
- Select the extracted sensors and magically the Max Modulation tool will appear
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@dstoupis
also ,I have some questions when I perform the TDCS, when the max modulation appears, then what should I do to perform the next process? hope I can get your reply. -
@hitina
Please explain what you mean. Have you performed the tDCS analysis and generated the temporal interference field?wrote on 5 Oct 2021, 12:56 last edited by@dstoupis Thanks for your reply.I have not generated the TI field.
I have some confused questions. I choose the LF-electro Quasi- static as the solver. I want to know how can I set up the boundary conditons .!
what's more,as the picture shows,how to set up the the current and the voltage of the eletrode. 
I am learning the performance of transcranial temporal interference stimulation in this days.
hope your reply.
best wishes. -
@hitina
Please explain what you mean. Have you performed the tDCS analysis and generated the temporal interference field?wrote on 10 Oct 2021, 10:16 last edited byThis post is deleted! -
@hitina
Please explain what you mean. Have you performed the tDCS analysis and generated the temporal interference field?wrote on 10 Oct 2021, 10:19 last edited byThis post is deleted! -
This post is deleted!
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Hello dstoupis,
I believe you aim to model the so-called temporal interference. The is a tool in Sim4Life for this called Max Modulation. You need two simulation with the same grid. Then you can multi-select the two fields in the Output View (each from one simulation) to have the Max Modulation button appear in the Ribbon.
Best,
Habibwrote on 17 Nov 2021, 14:37 last edited by@habib hello
i am performing TI simulation with sim4life and after using the max modulation to see the interference between the two field. I have electric field spreading all arround the mesh not only in the brain but in different part or the model (MIDA fULL aNISOTROPY MODEL).
And if i want to know which configuration of the electrode is better for TI simulation, should i compare the amount of electric field that reach the targeted region( for example in the hippocampus)? -
@habib hello
i am performing TI simulation with sim4life and after using the max modulation to see the interference between the two field. I have electric field spreading all arround the mesh not only in the brain but in different part or the model (MIDA fULL aNISOTROPY MODEL).
And if i want to know which configuration of the electrode is better for TI simulation, should i compare the amount of electric field that reach the targeted region( for example in the hippocampus)?