# \#inhibition **URL:** https://brian.discourse.group/tag/inhibition/71.md [Latest](https://brian.discourse.group/latest.md) · [Categories](https://brian.discourse.group/categories.md) · [Tags](https://brian.discourse.group/tags.md) --- ## [Inhibitory vs excitatory neuron](https://brian.discourse.group/t/inhibitory-vs-excitatory-neuron/1348)
**Author:** [@keun](https://brian.discourse.group/u/keun)\ **Replies:** 5\ **Last updated:** [16 December 2024 14:45 UTC](https://brian.discourse.group/t/inhibitory-vs-excitatory-neuron/1348 "2024-12-16T14:45:47Z")
Description of problem I have defined I as shown in the code below, and I’m wondering whether I need to add a negative sign to I\_syn. Below is the fsn code. In which cases should the negative sign be added? The synapse c…