Table 5.
Firing Pattern Parameters for a Standard Session and a Succeeding Card-apart Session
| Standard | Apart | Difference | Paired t | P | |
|---|---|---|---|---|---|
| Grand rate | 0.767 ± 0.718 | 0.615 ± 0.614 | −0.152 ± 0.459 | 2.096 | 0.04 |
| Field rate | 4.95 ± 2.95 | 3.932 ± 2.686 | −1.013 ± 2.26 | 2.840 | 0.007 |
| Centroid rate | 12.77 ± 11.07 | 8.224 ± 8.695 | −4.542 ± 12.37 | 2.323 | 0.03 |
| Size | 549.8 ± 361.1 | 543.0 ± 402.2 | −6.76 ± 267.2 | 0.160 | 0.87 |
| Coherence | 1.072 ± 0.266 | 0.957 ± 0.285 | −0.115 ± 0.270 | 2.695 | 0.01 |
| Information | 3.59 ± 1.09 | 3.57 ± 1.12 | −0.025 ± 0.876 | 0.180 | 0.86 |
The probabilities for the t values indicate reliable decreases in three different measures of firing rate. Coherence also decreased, suggesting that the field was noisier. There was no change in field size. As expected for unchanged field size, the information per spike is unaffected by moving the cards apart.