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population specific structural plasticity switch
by Aadhar Sharma 10 Nov '21

10 Nov '21

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NeuronUnit interface to NEST Adexp model.
by Russell J. Jarvis 10 Nov '21

10 Nov '21

Hi there NEST community, I am trying to build an interface between [NEST reduced cell models (Izhikevich/AdExp) and NeuronUnit](https://github.com/russelljjarvis/NESTNeuronUnit). For example here is one such [interface](https://github.com/russelljjarvis/NESTNeuronUnit/blob/master/nes… ) I find that if I run a single current injection experiment using the interface I get an expected number of spikes, but if I keep re-using the same interface in more and more experiments I get the same or similar number of spikes even with different current injection values. Its as if the initial conditions of the model are not re-setting properly. I wonder if there are any ideas of things I could check. This [simple file works okay](https://github.com/russelljjarvis/NESTNeuronUnit/blob/master/test_int…, but it only has one simulation run. Russell Jarvis (he,him) PhD Neuroscience [Personal Website](https://russelljjarvis.github.io/home/) I acknowledge the Dja Dja Wurrung and Taungurung Owners and Custodians of the lands on which I live and work and pay my respect to Elders past, present and future. phone: 61444576301 email: russelljarvis(a)protonmail.com Sent with [ProtonMail](https://protonmail.com/) Secure Email.

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Get details of source and target from Connection list
by Maryada Maryada 09 Nov '21

09 Nov '21

Dear NEST users, In the past version, for debugging purposes I used to get information of my source and target using the GetStatus function. However, with NEST 3.0, I couldn't find a way to do so, mainly because I have to pass either a SynpaseCollection or NeuronCollection as a function argument to GetStatus. Is it possible to fetch node collection from neuron id? Or any easier way to get source and target properties. I referred document at link https://nest-simulator.readthedocs.io/en/v3.1/guides/connection_management.… I have attached the python file for the same. -- Thanks, *Maryada*

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install nest-2.20.0
by Alberto 08 Nov '21

08 Nov '21

Dear experts, I'd like to install the Nest version 2.20.0 instead of the last 3.1. Is it still available for download? Thanks Alberto

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Get details of source and target from Connection list
by Maryada Maryada 08 Nov '21

08 Nov '21

Dear NEST users, In the past version, for debugging purposes, I used to get information of my source and target using the GetStatus function. However, with NEST 3.0, I couldn't find a way to do so, mainly because I have to pass either a SynpaseCollection or NeuronCollection as a function argument to GetStatus. Is it possible to fetch node collection from neuron id? Or any easier way to get the source and target properties. I referred document at link https://nest-simulator.readthedocs.io/en/v3.1/guides/connection_management.… I have attached the python file for the same. -- Thanks and Regards *Maryada*

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Open NEST Developer Video Conference Monday 8 November 2021 11:30 CET (UTC+1)
by Dennis Terhorst 08 Nov '21

08 Nov '21

Dear NEST Users & Developers! I would like to invite you to our next fortnightly Open NEST Developer Video Conference, today Monday 8 November, 11.30-12.30 CET (UTC+1). Feel free to join the meeting also just to bring your own questions for direct discussion in the in-depth section. As usual, in the Project team round, a contact person of each team will give a short statement summarizing ongoing work in the team and cross-cutting points that need discussion among the teams. The remainder of the meeting we would go into a more in-depth discussion of topics that came up on the mailing list or that are suggested by the teams. Agenda * Welcome * Review of NEST User Mailing List * Project team round * In-depth discussion The agenda for this meeting is also available online, see https://github.com/nest/nest-simulator/wiki/2021-11-08-Open-NEST-Developer-… Looking forward to seeing you soon! best, Dennis Terhorst ------------------ Log-in information ------------------ We use a virtual conference room provided by DFN (Deutsches Forschungsnetz). You can use the web client to connect. We however encourage everyone to use a headset for better audio quality or even a proper video conferencing system (see below) or software when available. Web client * Visit https://conf.dfn.de/webapp/conference/97938800 * Enter your name and allow your browser to use camera and microphone * The conference does not need a PIN to join, just click join and you're in. In case you see a dfnconf logo and the phrase "Auf den Meetingveranstalter warten", just be patient, the meeting host needs to join first (a voice will tell you). VC system/software How to log in with a video conferencing system, depends on you VC system or software. - Using the H.323 protocol (eg Polycom): vc.dfn.net##97938800 or 194.95.240.2##97938800 - Using the SIP protocol:97938800@vc.dfn.de - By telephone: +49-30-200-97938800 For those who do not have a video conference system or suitable software, Polycom provides a pretty good free app for iOS and Android, so you can join from your tablet (Polycom RealPresence Mobile, available from AppStore/PlayStore). Note that firewalls may interfere with videoconferencing in various and sometimes confusing ways. For more technical information on logging in from various VC systems, please see http://vcc.zih.tu-dresden.de/index.php?linkid=1.1.3.4

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Requesting for workflow and analysis
by D S Jaswanth 04 Nov '21

04 Nov '21

Sir /madam I'm jaswanth , pursuing my master's degree in biochemistry @reva university Were I'm very much interested working with brain modelling by using neuroinformatical tools as part of my research project I request that please give me workflow for Analysing dataset and codes for analysis of dataset finally what types of datasets can be used for brain modelling by nest I hope for your consideration and guidance Thanks and regards

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NEST on macOS 12 Monterey
by Hans Ekkehard Plesser 04 Nov '21

04 Nov '21

Dear NEST Users, I would just like to let you know that I have successfully built, installed and tested NEST on macOS 12.0.1 (Monterey) on Apple Silicon, following the standard procedure for the Mac. Both Apple Clang 13.0 and G++ 11 work. Note that there have been some reports that upgrading to macOS Monterey can very thoroughly lock your machine, especially Intel-based machines (https://arstechnica.com/gadgets/2021/11/why-macos-updates-might-brick-your-…), so you may want to wait with upgrading until this is solved. Best, Hans Ekkehard -- Prof. Dr. Hans Ekkehard Plesser Head, Department of Data Science Faculty of Science and Technology Norwegian University of Life Sciences PO Box 5003, 1432 Aas, Norway Phone +47 6723 1560 Email hans.ekkehard.plesser(a)nmbu.no<mailto:hans.ekkehard.plesser@nmbu.no> Home http://arken.nmbu.no/~plesser

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Re: Adapt custom models from NEST 2.16 to NEST 3.
by Agnes Korcsak-Gorzo 28 Oct '21

28 Oct '21

Dear all, the request below from 20.10.2021 was successfully resolved. Best regards, Agnes """" Hello everyone, I want to adapt two custom models called "global_volume_transmitter" and "dopa_connection" from NEST 2.16 to NEST 3.1. The .cpp and .h files are attached to this email. Is it possible to have the models adapted to NEST 3.1? How could this be done? I hope someone can help me with that. Best regards, Daniel Todt """

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nest installment in Docker nestsim/nest container
by Nina Doorn 25 Oct '21

25 Oct '21

Dear experts, I have a question about using nest on docker/vscode on my windows PC. I hope this is the right place to ask since I couldn't answer my question using the troubleshooting session. I am using docker to use pyNEST on my windows computer. I have successfully installed NEST using the instructions mentioned here for installing on docker: https://nest-simulator.readthedocs.io/en/v2.20.1/installation/index.html. If I am in the container, I have python version 3.8.10. If I run python and then try to "import nest" it says there is no module named nest. Importing other python packages works perfectly in this way. But indeed, when I look at all the installed packages using pip list, there is no package called "nest". There is, however "nest-desktop 3.0.3" there. So I guess nest is not installed. However, I also don't know how to install it. If I use pip install nest, another package called nest is installed that is not the nest simulator (according to: #754 <https://github.com/nest/nest-simulator/issues/754>). Also, I don't know whether this problem is related or totally unrelated but it might give some insight: when I am in VScode in the nestsim/nest container and I click on python: select interpreter, nothing happens, I cannot select a python interpreter/no window opens. So maybe there is something wrong with the python installations or the used path? I hope the problem is clear. I've been trying different things for days so I would greatly appreciate any help you can offer me! Thanks in advance and have a nice day! Kind regards, Nina Doorn

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