Table 1.
Uphill | Downhill | |||||
---|---|---|---|---|---|---|
0 ° | 15 ° | 25 ° | 0 ° | 15 ° | 25 ° | |
Firing rate (Hz) | 3.31 ± 0.25 | 3.63 ± 0.37 | 3.58 ± 0.38 | 3.81 ± 0.26 | 3.64 ± 0.33 | 3.23 ± 0.25 |
Peak firing rate (Hz) | 32.7 ± 2.4 | 33.5 ± 3.4 | 36.6 ± 3.2 | 33.7 ± 2.3 | 36.5 ± 2.7 | 35.4 ± 2.5 |
Information score (bits/spk) | 1.62 ± 0.08 | 1.57 ± 0.07 | 1.68 ± 0.06 | 1.62 ± 0.07 | 1.72 ± 0.08 | 1.71 ± 0.07 |
Sparsitya | 0.24 ± 0.01 | 0.25 ± 0.01 | 0.22 ± 0.01 | 0.25 ± 0.01 | 0.23 ± 0.01 | 0.22 ± 0.01 |
Spatial coherence (r) | 0.90 ± 0.04 | 0.98 ± 0.05 | 0.94 ± 0.05 | 1.10 ± 0.06 | 1.01 ± 0.05 | 0.94 ± 0.04 |
Number of place fields | 1.30 ± 0.10 | 1.33 ± 0.12 | 1.23 ± 0.08 | 1.21 ± 0.07 | 1.21 ± 0.06 | 1.25 ± 0.07 |
Total fields/occupancy (%) | 27% ± 2% | 24% ± 2% | 26% ± 1% | 24% ± 1% | 24% ± 1% | 23% ± 2% |
Main field/occupancy (%) | 26% ± 2% | 22% ± 1% | 25% ± 2% | 23% ± 2% | 23% ± 1% | 22% ± 1% |
Place field aspect ratio | 3.23 ± 0.32 | 3.13 ± 0.33 | 3.09 ± 0.40 | 3.31 ± 0.23 | 2.89 ± 0.16 | 2.85 ± 0.17 |
Infield firing rate (Hz) | 12.4 ± 1.26 | 14.2 ± 2.01 | 14.1 ± 1.33 | 15.0 ± 1.31 | 15.8 ± 1.53 | 14.2 ± 1.34 |
Outfield firing rate (Hz) | 1.08 ± 0.11 | 1.32 ± 0.14 | 1.18 ± 0.15 | 1.18 ± 0.09 | 1.16 ± 0.13 | 1.13 ± 0.10 |
indicates significant effect (p < 0.05) for tilt or slope direction (see text for details).