Table 1.
Comparison of properties of synaptic connections established by L4 spiny neuron nerve terminals projecting onto other excitatory neurons in different cortical layers
|
L4 projection to: |
L4 spiny stellate |
L2/3 pyramidal cells |
L5A pyramidal cells |
|---|---|---|---|
| Unitary EPSP (mV) | 1.6 ± 1.5 (n = 131) | 0.7 ± 0.6 (n = 64) | 0.6 ± 0.4 (n = 12) |
| Coefficient of variation | 0.37 ± 0.18 (n = 131) | 0.27 ± 0.13 (n = 63) | 0.33 ± 0.20 (n = 12) |
| Paired-pulse ratio (100 ms interstimulus interval) | 0.73 ± 0.25 (n = 8) | 0.87 ± 0.31 (n = 7) | 0.83 ± 0.08 (n = 4) |
| Connectivity |
0.2−0.3 |
0.1 |
0.1 |