Means and SE of selected receptive field properties across X-like, Y-like, and W-like squirrel LGN neurons
| Parameter | X-like | Y-like | W-like | Significant Differences | Significant Post Hoc Comparisons |
|---|---|---|---|---|---|
| Peak firing rate (Hz) | 315.4 ± 15.4 | 353.8 ± 19.8 | 100.9 ± 8.9 | ** | X-W**, Y-W** |
| Spontaneous firing rate (Hz) | 2.27 ± 0.36 | 0.86 ± 0.37 | 2.49 ± 0.44 | ||
| Maintained firing rate (Hz) | 33.7 ± 2.8 | 4.9 ± 2.5 | 10.1 ± 1.7 | ** | X-Y**, X-W**, Y-W** |
| τtrans (ms) | 146.3 ± 9.5 | 44.1 ± 9.6 | 105.3 ± 12.5 | ** | X-Y**, X-W**, Y-W** |
| Peak latency (ms) | 26.9 ± 1.6 | 21.5 ± 1.4 | 79.7 ± 10.3 | **^ | X-Y**, X-W**, Y-W** |
| F2/F1 linearity | 0.67 ± 0.04 | 0.79 ± 0.07 | 0.91 ± 0.09 | * | X-W** |
| Center size (°) | 1.54 ± 0.1 | 1.94 ± 0.3 | 3.9 ± 0.4 | ** | X-W**, Y-W* |
| Peak rate coefficient of variation | 0.47 ± 0.02 | 0.46 ± 0.03 | 1.7 ± 0.13 | **^ | X-W**, Y-W** |
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Values are means ± SE. Significant differences among the groups are denoted by * (P < 0.05) or ** (P < 0.01), and significant post hoc comparisons between pairs of groups are indicated in the column at the right. X-like cells showed higher maintained firing rates and larger τtrans than Y-like or W-like cells, and showed lower F2/F1 linearity indices than W-like cells. Y-like cells had the shortest latencies, whereas W-like cells had the longest latencies. Both X-like and Y-like cells had higher peak firing rates, smaller receptive field center sizes, and lower peak firing rate coefficients of variation compared to W-like cells, but did not differ significantly from each other in these parameters. ^Indicates parameter was used to divide cells into groups.