Make a connection output additional information following an Action Potential (AP)

When debugging Connectivity, it is useful to be able to verify that the postsynaptic cell is triggered when its presynaptic cell has fired.

There is a member variable in Synapses, verboseLevel, which can be turned on. Normally this is done in the HOC interpreter, but one can also activate it via the connection_overrides section in the simulation config file as well.

"connection_overrides": [
  {
    "name": "init",
    "source": "hex_O1",
    "target": "hex_O1",
    "synapse_configure" : "%s.verboseLevel = 1"
  }, 
  ...
]

In the simulator output, you should find messages following synaptic events

If there is no release

[Syn 2868] Failure! t = 99.9752: urand = 0.528058

If an Inhibitory Synapse (ProbGABAAB_EMS) releases (values are from NET_RECEIVE: A_GABAA, weight_GABAA, factor_GABAA),

or if an Excitatory Synapse (ProbAMPANMDA_EMS) releases (values are from NET_RECEIVE: A_AMPA, weight_AMPA, factor_AMPA, weight)

[Syn 1633] Release! t = 99.9902, vals: 1.05995 0.939071 1.12872 0.939071