Table 1.
Firing characteristics of mouse CA1 place cells during object recognition tasks
| Protocol | Measure | Delay | Cylinder 1 | Arena Hab_1 | Sample | Test |
|---|---|---|---|---|---|---|
| Cue Card OR |
fields/cell | <5 | 1.13 | 1.12 | 1.20 | 1.20 |
| 20 | 1.00 | 1.20 | 1.50 | 1.40 | ||
| overall | 1.08 ± 0.06 | 1.17 ± 0.09 | 1.32 ± 0.10 | 1.28 ± 0.09 | ||
| proportion >1 | 0.16 | 0.18 | 0.25 | 0.24 | ||
| average in-field firing rate (Hz) | <5 | 4.87 | 2.70 | 4.47 | 3.90 | |
| 20 | 3.60 | 3.00 | 3.80 | 3.30 | ||
| overall | 4.36 ± 0.37 | 2.82 ± 0.65 | 4.20 ± 0.53 | 3.66 ± 0.35 | ||
| stability (versus Arena Hab_1) | <5 | 0.73 | 0.70 | |||
| 20 | 0.68 | 0.68 | ||||
| Drop-In OR |
fields/cell | <5 | 1.22 | 1.22 | 1.22 | 1.56 |
| 20 | 1.20 | 1.20 | 1.20 | 1.40 | ||
| overall | 1.21 ± 0.10 | 1.21 ± 0.10 | 1.21 ± 0.10 | 1.47 ± 0.14 | ||
| proportion >1 | 0.14 | 0.18 | 0.28 | 0.26 | ||
| average in-field firing rate (Hz) | <5 | 3.56 | 2.72 | 3.56 | 3.11 | |
| 20 | 2.45 | 2.95 | 3.20 | 4.35 | ||
| overall | 2.97 ± 0.54 | 2.84 ± 0.44 | 3.37 ± 0.53 | 3.76 ± 0.72 | ||
| stability (versus Arena Hab_1) | <5 | 0.56 | 0.55 | |||
| 20 | 0.52 | 0.49 | ||||
| Conventional OR |
fields/cell | <5 | 1.17 | 1.17 | 1.50 | 1.25 |
| 20 | 1.12 | 1.18 | 1.25 | 1.13 | ||
| overall | 1.14 ± 0.07 | 1.18 ± 0.07 | 1.36 ± 0.12 | 1.18 ± 0.10 | ||
| proportion >1 | 0.09 | 0.10 | 0.18 | 0.13 | ||
| average in-field firing rate (Hz) | <5 | 3.38 | 3.29 | 2.63 | 2.54 | |
| 20 | 3.16 | 4.12 | 4.44 | 3.65 | ||
| overall | 3.25 ± 0.32 | 3.77 ± 0.45 | 3.66 ± 0.60 | 3.18 ± 0.40 | ||
| stability (versus Arena Hab_1) | <5 | 0.59 | 0.58 | |||
| 20 | 0.65 | 0.63 |
Values are means ± SE. Cylinder 1, the initial recording session in the cylindrical arena with the cue card in the 3 o'clock position; Arena Hab_1, the first recording session in the square arena; OR, object recognition.