groups package

Package providing groups such as NeuronGroup or PoissonGroup.

Exported members: CodeRunner, Group, VariableOwner, NeuronGroup

group module

This module defines the VariableOwner class, a mix-in class for everything that saves state variables, e.g. Clock or NeuronGroup, the class Group for objects that in addition to storing state variables also execute code, i.e. objects such as NeuronGroup or StateMonitor but not Clock, and finally CodeRunner, a class to run code in the context of a Group.

Exported members: Group, VariableOwner, CodeRunner


CodeRunner(*args, **kw)

A "code runner" that runs a CodeObject every timestep and keeps a reference to the Group.

Group(*args, **kw)



Convenience class to allow access to the indices via indexing syntax.

Indexing(group[, default_index])

Object responsible for calculating flat index arrays from arbitrary group- specific indices.

VariableOwner(*args, **kw)

Mix-in class for accessing arrays by attribute.


get_dtype(equation[, dtype])

Helper function to interpret the dtype keyword argument in NeuronGroup etc.

neurongroup module

This model defines the NeuronGroup, the core of most simulations.

Exported members: NeuronGroup


NeuronGroup(*args, **kw)

A group of neurons.

Resetter(*args, **kw)

The CodeRunner that applies the reset statement(s) to the state variables of neurons that have spiked in this timestep.

StateUpdater(*args, **kw)

The CodeRunner that updates the state variables of a NeuronGroup at every timestep.

SubexpressionUpdater(*args, **kw)

The CodeRunner that updates the state variables storing the values of subexpressions that have been marked as "constant over dt".

Thresholder(*args, **kw)

The CodeRunner that applies the threshold condition to the state variables of a NeuronGroup at every timestep and sets its spikes and refractory_until attributes.



Do not allow names ending in _pre or _post to avoid confusion.

to_start_stop(item, N)

Helper function to transform a single number, a slice or an array of contiguous indices to a start and stop value.

subgroup module

Exported members: Subgroup


Subgroup(*args, **kw)

Subgroup of any Group