# Neurons A neuron is a plugin that you can use in a synapse to perform action. Neurons are executed one by one when the input action is triggered. Neurons are declared in the `neurons` section of a synapse in your brain file. The `neurons` section is a list (because it starts with a "-") which contains neuron module name ``` neurons: - neuron_name - neuron_2 - another_neuron ``` Some neurons need parameters that can be passed as argument following the syntax bellow: ``` neurons: - neuron_name: parameter1: "value1" parameter2: "value2" ``` > **note:** parameters are indented with one tabulation bellow the neuron's name. To know which parameter are required, check of documentation of the neuron. ## List of available neuron