TABLE 2.Functional properties of synaptic connections made by fast spiking interneurons onto pyramidal cells
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| Basket | Chandelier | Not Identified | |
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| n | 8 | 2 | 5 |
| hIPSP Amplitude, mV | –0.50 ± 0.15 | –0.38* | –0.34 ± 0.05 |
| dIPSP Amplitude, mV | 0.39 ± 0.10 | 0.63* | 0.30 ± 0.05 |
| Latency, ms | 0.66 ± 0.09 | 0.88 ± 0.36 | 0.68 ± 0.15 |
| Rise time, ms | 1.83 ± 0.52 | 0.95 ± 0.23 | 1.97 ± 0.33 |
| hIPSP decay constant, ms | 42.9 ± 19.1 | 31* | 24.3 ± 13.1 |
| dIPSP decay constant, ms | 103.5 ± 17.8 | 167* | 84* |
| Failure rate | 6.9 ± 2.2 | 0† | 3.7 ± 1.9 |
| CV | 0.60 ± 0.08 | 0.41 ± 0.10 | 0.55 ± 0.12 |
| IPSP Depression§ | 0.40 ± 0.06 | 0.29 ± 0.06 | 0.24 ± 0.08 |
Data are shown as means ± SE. hIPSP, hyperpolarizing IPSP; dIPSP depolarizing IPSP; CV coefficient of variation.
* : for these individual neurons, only hIPSPs or dIPSPs were recorded.
† : no failures were detected in chandelier neuron connections.
§ : Depression was measured as the ratio between IPSP(10) and IPSP(1) amplitudes in 20 Hz trains.