Current waveforms are represented in PyNN by
There are four built-in source types, and it is straightforward to
implement your own.
There are two ways to inject a current waveform into the cells of a
Assembly: either the
inject_into() method of the
CurrentSource or the
inject() method of the
>>> pulse = DCSource(amplitude=0.5, start=20.0, stop=80.0) >>> pulse.inject_into(population[3:7])
>>> sine = ACSource(start=50.0, stop=450.0, amplitude=1.0, offset=1.0, ... frequency=10.0, phase=180.0) >>> population.inject(sine)
>>> steps = StepCurrentSource(times=[50.0, 110.0, 150.0, 210.0], ... amplitudes=[0.4, 0.6, -0.2, 0.2]) >>> steps.inject_into(population[(6,11,27)])
>>> noise = NoisyCurrentSource(mean=1.5, stdev=1.0, start=50.0, stop=450.0, dt=1.0) >>> population.inject(noise)
For a full description of all the built-in current source classes, see the API reference.
write “implementing-your-own-current-source” (e.g., implement “chirp”)