====== StateVector default specifiers  ======


Each [[SpikingGroup]] in Auryn stores and manages a selection of [[StateVector|StateVectors]] which can be accessed through string specifiers/handles and be read out using a [[StateMonitor]]. 

The following default specifiers objects are initialized per default in all classes based on [[NeuronGroup]]. 

  * ''mem'' The membrane potential
  * ''thr'' The adaptive component of the firing threshold as used in some default models such as [[IFGroup]].
  * ''g_ampa'' The vector storing the AMPA conductance.
  * ''g_nmda'' The vector storing the NMDA conductance.
  * ''g_gaba'' The vector storing the GABA conductance.


In addition to that each neuron group may initialize and use additional [[StateVector|StateVectors]]. For instance, the ''get_state_vector("foobar")'' function returns the pointer to a [[StateVector]] with handle foobar. If the instance does not exist prior to the call, a new instance with that specifier will be created.

Some neuron groups additionally use auxiliary or temporary variables which are often defined as [[StateVector|StateVectors]]. It is customary to begin their key with the prefix ''t_'' for "temporary". Note however, that also these temporary variables are stored alongside the neuron model when the network state is saved.