Last modified by adavison on 2022/10/04 13:55

From version 14.1
edited by adavison
on 2021/09/30 15:27
Change comment: There is no comment for this version
To version 12.1
edited by adavison
on 2021/09/30 14:21
Change comment: There is no comment for this version

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... ... @@ -334,96 +334,43 @@
334 334  population2.set(i_offset=0)
335 335  population1.record("v")
336 336  population2.record("v")(%%)
337 -(% style="color:#000000" %)connection_algorithm = sim.FixedProbabilityConnector(p=0.5)
337 +(% style="color:#e74c3c" %)connection_algorithm = sim.FixedProbabilityConnector(p=0.5)
338 338  synapse_type = sim.StaticSynapse(weight=0.5, delay=0.5)
339 339  connections = sim.Projection(population1, population2, connection_algorithm, synapse_type)(%%)
340 340  (% style="color:#000000" %)sim.run(100.0)(%%)
341 -(% style="color:#e74c3c" %)data1_v(% style="color:#000000" %) = population1.get_data().segments[0].filter(name='v')[0](%%)
342 -(% style="color:#e74c3c" %)data2_v = population2.get_data().segments[0].filter(name='v')[0](%%)
343 -(% style="color:#000000" %)Figure(
344 - Panel(
345 - (% style="color:#e74c3c" %)data1_v(% style="color:#000000" %)[:, 0:5],
346 - xticks=True, (% style="color:#e74c3c" %)--xlabel="Time (ms)",--(%%)
347 -(% style="color:#000000" %) yticks=True, ylabel="Membrane potential (mV)"
348 - ),
349 - (% style="color:#e74c3c" %)Panel(
350 - data2_v[:, 0:5],
351 - xticks=True, xlabel="Time (ms)",
352 - yticks=True"
353 - ),(%%)
354 -(% style="color:#000000" %) title="Response of (% style="color:#e74c3c" %)simple network(% style="color:#000000" %)",
355 - annotations="Simulated with NEST"
356 -).show()
357 -
358 -**Run script in terminal, show figure**
359 -)))
360 -
361 -(% class="wikigeneratedid" %)
362 -and there we have it, our simple neuronal network of integrate-and-fire neurons, written in PyNN, simulated with NEST. If you prefer to use the NEURON simulator, PyNN makes this very simple, we import the PyNN-for-NEURON module instead.
363 -
364 -(% class="box infomessage" %)
365 -(((
366 -**Screencast** - current state of editor
367 -\\(% style="color:#000000" %)"""Simple network model using PyNN"""
368 -\\import pyNN.(% style="color:#e74c3c" %)neuron(% style="color:#000000" %) as sim(%%)
369 -(% style="color:#000000" %)from pyNN.utility.plotting import Figure, Panel(%%)
370 -(% style="color:#000000" %)from pyNN.random import RandomDistribution(%%)
371 -(% style="color:#000000" %)sim.setup(timestep=0.1)(%%)
372 -(% style="color:#000000" %)cell_type  = sim.IF_curr_exp(
373 - (% style="color:#e74c3c" %) (% style="color:#000000" %)v_rest=RandomDistribution('normal', {'mu': -65.0, 'sigma': 1.0}),
374 - v_thresh=RandomDistribution('normal', {'mu': -55.0, 'sigma': 1.0}),
375 - v_reset=RandomDistribution('normal', {'mu': -65.0, 'sigma': 1.0}), (%%)
376 -(% style="color:#000000" %) t_refrac=1, tau_m=10, cm=1, i_offset=0.1)(%%)
377 -(% style="color:#000000" %)population1 = sim.Population(100, cell_type, label="Population 1")(%%)
378 -(% style="color:#000000" %)population2 = sim.Population(100, cell_type, label="Population 2")
379 -population2.set(i_offset=0)
380 -population1.record("v")
381 -population2.record("v")(%%)
382 -(% style="color:#000000" %)connection_algorithm = sim.FixedProbabilityConnector(p=0.5)
383 -synapse_type = sim.StaticSynapse(weight=0.5, delay=0.5)
384 -connections = sim.Projection(population1, population2, connection_algorithm, synapse_type)(%%)
385 -(% style="color:#000000" %)sim.run(100.0)(%%)
386 -(% style="color:#000000" %)data1_v = population1.get_data().segments[0].filter(name='v')[0]
387 -data2_v = population2.get_data().segments[0].filter(name='v')[0]
341 +(% style="color:#000000" %)data1_v = population1.get_data().segments[0].filter(name='v')[0]
342 +data2_v = population1.get_data().segments[0].filter(name='v')[0]
388 388  Figure(
389 389   Panel(
390 - data1_v[:, 0:5],
391 - xticks=True,
345 + data_v[:, 0:5],
346 + xticks=True, xlabel="Time (ms)",
392 392   yticks=True, ylabel="Membrane potential (mV)"
393 393   ),
394 - Panel(
395 - data2_v[:, 0:5],
396 - xticks=True, xlabel="Time (ms)",
397 - yticks=True"
398 - ),(%%)
399 -(% style="color:#000000" %) title="Response of simple network",
400 - annotations="Simulated with (% style="color:#e74c3c" %)NEURON(% style="color:#000000" %)"
349 +
350 +
351 +(% style="color:#000000" %) title="Response of first five neurons with heterogeneous parameters",
352 + annotations="Simulated with NEST"
401 401  ).show()
402 402  
403 403  **Run script in terminal, show figure**
404 404  )))
405 405  
406 -(% class="wikigeneratedid" %)
407 -As you would hope, NEST and NEURON give essentially identical results.
358 +(% class="wikigeneratedid" id="HSummary28Inthistutorial2CyouhavelearnedtodoX202629" %)
359 +(% class="small" %)**Summary (In this tutorial, you have learned to do X…)**
408 408  
409 -(% class="box successmessage" %)
410 -(((
411 -**Slide** recap of learning objectives
412 -)))
361 +.
413 413  
414 -That is the end of this tutorial, in which I've demonstrated how to build a simple network using PyNN, and to simulate it using two different simulators, NEST and NEURON.
363 +(% class="wikigeneratedid" id="HAcknowledgementsifappropriate" %)
364 +(% class="small" %)**Acknowledgements if appropriate**
415 415  
416 -Of course, PyNN allows you to create much more complex networks than this, with more realistic neuron models, synaptic plasticity, spatial structure, and so on. You can also use other simulators, such as Brian or SpiNNaker, and you can run simulations in parallel on clusters or supercomputers.
366 +.
417 417  
418 -We will be releasing a series of tutorials, throughout the rest of 2021 and 2022, to introduce these more advanced features of PyNN, so keep an eye on the EBRAINS website.
368 +(% class="wikigeneratedid" id="HReferencestowebsites28Formoreinformation2Cvisitusat202629" %)
369 +(% class="small" %)**References to websites (For more information, visit us at…)**
419 419  
420 -(% class="box successmessage" %)
421 -(((
422 -**Slide** acknowledgements, contact information
423 -)))
371 +.
424 424  
425 -(% class="wikigeneratedid" %)
426 -PyNN has been developed by many different people, with financial support from several different organisations. I'd like to mention in particular the CNRS and the European Commission, through the FACETS, BrainScaleS and Human Brain Project grants.
373 +(% class="wikigeneratedid" id="HContactinformation28Forquestions2Ccontactusat202629" %)
374 +(% class="small" %)**Contact information (For questions, contact us at…)**
427 427  
428 -(% class="wikigeneratedid" %)
429 -For more information visit neuralensemble.org/PyNN. If you have questions you can contact us through the PyNN Github project, the NeuralEnsemble forum, EBRAINS support, or the EBRAINS Community.
376 +.