# Event based version of rate based homeostasis
**URL:** https://brian.discourse.group/t/event-based-version-of-rate-based-homeostasis/176
**Category:** Science, Projects, and Showcases
**Created:** [5 October 2020 14:36 UTC](https://brian.discourse.group/t/event-based-version-of-rate-based-homeostasis/176 "2020-10-05T14:36:36Z")
**Posts on this page:** 6
**Page:** 1
### Author:  [@schmitts](https://brian.discourse.group/u/schmitts)
#### Post date: [5 October 2020 14:36 UTC](https://brian.discourse.group/t/event-based-version-of-rate-based-homeostasis/176/1 "2020-10-05T14:36:37Z")
Hi!
Cf. [https://github.com/brian-team/brian2/issues/1241;](https://github.com/brian-team/brian2/issues/1241;) does anybody know about comparisons of event based versions of rate based homeostasis?
Thanks,
Sebastian
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### Author:  [@kernfel](https://brian.discourse.group/u/kernfel)
#### Post date: [6 October 2020 02:05 UTC](https://brian.discourse.group/t/event-based-version-of-rate-based-homeostasis/176/2 "2020-10-06T02:05:20Z")
I have nothing to add myself, I just want to avoid your question falling to the wayside due to the broken link. Thus, for completeness:
[Fixed link to the issue](https://github.com/brian-team/brian2/issues/1241)
> [@schmitts](#):
>
> Hi!
>
> I’m looking for an example for homeostatic plasticity to stabilize firing rates. Is there a notion for firing rates available that can be used to formulate a weight update rule?
>
> Thanks,
>
> Sebastian
> [@mstimberg](#):
>
> In spiking networks, there is no direct firing rate variable that is available. What you’d typically do is to use a variable that increases with each spike (via the `reset` statement) and decays over time. Another option is to low-pass filter the membrane potential and to use this as a proxy for the firing rate (see e.g. the [Clopath et al. (2010) example](https://brian2.readthedocs.io/en/stable/examples/frompapers.Clopath_et_al_2010_homeostasis.html)).
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### Author:  [@schmitts](https://brian.discourse.group/u/schmitts)
#### Post date: [6 October 2020 06:21 UTC](https://brian.discourse.group/t/event-based-version-of-rate-based-homeostasis/176/3 "2020-10-06T06:21:00Z")
Thanks for the heads up!
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### Author:  [@mstimberg](https://brian.discourse.group/u/mstimberg)
#### Post date: [8 October 2020 15:20 UTC](https://brian.discourse.group/t/event-based-version-of-rate-based-homeostasis/176/4 "2020-10-08T15:20:58Z")
Hi again. Not sure this is exactly what you are looking for, but [Zenke et al. (2013)](https://journals.plos.org/ploscompbiol/article?id=10.1371/journal.pcbi.1003330) implemented a homoeostatic mechanism with spikes that calculates the firing rate as a low-pass filtered version of the spike rate, like I mentioned in the github issue.
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### Author:  [@schmitts](https://brian.discourse.group/u/schmitts)
#### Post date: [2 August 2021 11:45 UTC](https://brian.discourse.group/t/event-based-version-of-rate-based-homeostasis/176/5 "2021-08-02T11:45:03Z")
Hi!
I’ve put together an example for spike (event) based homeostasis: [Add example for spike based homeostasis by schmitts · Pull Request #1331 · brian-team/brian2 · GitHub](https://github.com/brian-team/brian2/pull/1331)
Cheers,
Sebastian
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### Author:  [@schmitts](https://brian.discourse.group/u/schmitts)
#### Post date: [8 September 2021 06:24 UTC](https://brian.discourse.group/t/event-based-version-of-rate-based-homeostasis/176/6 "2021-09-08T06:24:37Z")
It got merged, thanks! [Example: spike\_based\_homeostasis — Brian 2 2.4.2.post0.dev296 documentation](https://brian2.readthedocs.io/en/latest/examples/synapses.spike_based_homeostasis.html)