SpikeGen

class SpikeGen

SpikeGen object, for detecting threshold crossings.The threshold detection can work in multiple modes.

If the refractT < 0.0, then it fires an event only at the rising edge of the input voltage waveform

proc

void (shared message field) Shared message to receive Process message from scheduler

process()

(destination message field) Handles process call

reinit()

(destination message field) Handles reinit call

Vm()

(destination message field) Handles Vm message coming in from compartment

setThreshold()

(destination message field) Assigns field value.

getThreshold()

(destination message field) Requests field value. The requesting Element must provide a handler for the returned value.

setRefractT()

(destination message field) Assigns field value.

getRefractT()

(destination message field) Requests field value. The requesting Element must provide a handler for the returned value.

setAbs_refract()

(destination message field) Assigns field value.

getAbs_refract()

(destination message field) Requests field value. The requesting Element must provide a handler for the returned value.

getHasFired()

(destination message field) Requests field value. The requesting Element must provide a handler for the returned value.

setEdgeTriggered()

(destination message field) Assigns field value.

getEdgeTriggered()

(destination message field) Requests field value. The requesting Element must provide a handler for the returned value.

spikeOut

double (source message field) Sends out a trigger for an event.

threshold

double (value field) Spiking threshold, must cross it going up

refractT

double (value field) Refractory Time.

abs_refract

double (value field) Absolute refractory time. Synonym for refractT.

hasFired

bool (value field) True if SpikeGen has just fired

edgeTriggered

bool (value field) When edgeTriggered = 0, the SpikeGen will fire an event in each timestep while incoming Vm is > threshold and at least abs_refracttime has passed since last event. This may be problematic if the incoming Vm remains above threshold for longer than abs_refract. Setting edgeTriggered to 1 resolves this as the SpikeGen generatesan event only on the rising edge of the incoming Vm and will remain idle unless the incoming Vm goes below threshold.

class SpikeStats

Object to do some minimal stats on rate of a spike train. Derived from the Stats object and returns the same set of stats.Can take either predigested spike event input, or can handle a continuous sampling of membrane potential Vm and decide if a spike has occured based on a threshold.

setThreshold()

(destination message field) Assigns field value.

getThreshold()

(destination message field) Requests field value. The requesting Element must provide a handler for the returned value.

addSpike()

(destination message field) Handles spike event time input, converts into a rate to do stats upon.

Vm()

(destination message field) Handles continuous voltage input, can be coming in much than update rate of the SpikeStats. Looks for transitions above threshold to register the arrival of a spike. Doesn't do another spike till Vm falls below threshold.

threshold

double (value field) Spiking threshold. If Vm crosses this going up then the SpikeStats object considers that a spike has happened and adds it to the stats.