Table 2.
Properties of the same place cells recorded in both the cylinder and chamber
| Property | Cylinder | Chamber floor | Chamber floor compared with cylinder |
|---|---|---|---|
| Firing rate (AP/s) | 1.00 ± 0.07 | 0.96 ± 0.004 | t(221) = 0.8; p > 0.4 |
| In-field rate (AP/s) | 2.1 ± 0.1 | 1.9 ± 0.08 | t(479) = 2.1; p < 0.04 |
| Out-of-field rate (AP/s) | 0.09 ± 0.009 | 0.10 ± 0.008 | t(221) = 1.0; p > 0.3 |
| Information content (bits/AP) | 2.0 ± 0.08 | 1.8 ± 0.07 | t(221) = 1.8; p > 0.07 |
| Coherence (std units) | 0.63 ± 0.02 | 0.68 ± 0.01 | t(221) = 2.2; p < 0.03 |
| No. of place fields | 1.3 ± 0.05 | 3.2 ± 0.18 | t(221) = 10.6; p < 0.001 |
| Place field size (pixels) | 52.4 ± 3.5 | 94.6 ± 8.9 | t(479) = 3.3; p < 0.001 |
| Place field size (proportion of space) | 0.24 ± 0.02 | 0.092 ± 0.009 | t(479) = 9.5; p < 0.001 |
| Proportion of active pixels | 0.38 ± 0.02 | 0.35 ± 0.02 | t(221) = 1.34; p > 0.17 |
Only the data from the cylinder recording before the chamber session are considered. Significant differences are highlighted in bold.