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29 | 29 | The first part of this test is exactly the same as test_iaf_psc_exp_ps,
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30 | 30 | demonstrating the numerical equivalency of both models in usual conditions.
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31 | 31 | The only difference between the models, which is tested in the second part,
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32 |
| -is the detection of double threshold crossings during a simulation step |
| 32 | +is the detection of double threshold crossings during a simulation step |
33 | 33 | (so the membrane potential is again below V_th at the end of the step)
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34 | 34 | by the lossless model.
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35 | 35 |
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36 | 36 | The second part tests whether the lossless spike detection algorithm [1] is
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37 | 37 | working correctly.
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38 | 38 |
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39 |
| -The algorithm checks whether a spike is emitted on the basis of the neurons position |
| 39 | +The algorithm checks whether a spike is emitted on the basis of the neurons position |
40 | 40 | in state space. There are 4 regions in state space (see [1]): NS1, NS2, S1 and S2.
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41 | 41 | S1 corresponds to threshold crossings that would also be detected by the lossy
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42 | 42 | implementation /iaf_psc_exp_ps. S2 corresponds to crossings that would be missed.
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43 | 43 | The lossless model detects both.
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44 | 44 |
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45 | 45 | The test brings 3 neurons into the state space regions NS2, S1 and S2,
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46 |
| -which is done by keeping their membrane potential close to threshold and then |
| 46 | +which is done by keeping their membrane potential close to threshold and then |
47 | 47 | sending a single spike to them, which, received via different synaptic weights,
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48 | 48 | sets the synaptic current such that the neurons are in the respective region.
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49 | 49 | The existence and precise times of the resulting spikes are compared to reference data.
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