Table 2.
Control analyses for non-specific neuropil contamination and percentage of orientation- and direction-tuned neurons
| Dataset | Mice (n) | Percentage tuned |
p value for Kruskal–Wallis test |
||||
|---|---|---|---|---|---|---|---|
| Bandwidth |
Direction index |
Slope (15–30 °) | |||||
| Quadrant | Axis | Quadrant | Axis | ||||
| Original | 14 | 19.1% | <10−6 | <10−6 | 2 · 10−5 | 10−5 | 2 · 10−6 |
| Ctrl #1 | 14 | 27.5% | 3 · 10−5 | 0.001 | 0.044 | 0.012 | 3 · 10−5 |
| Ctrl #2 | 5 | 47% | 2 · 10−6 | 3 · 10−5 | 3 · 10−5 | 7 · 10−6 | 5 · 10−6 |
| Ctrl #3 | 6 | 42% | 0.008 | 0.001 | 0.009 | 0.005 | 3 · 10−5 |
Analysis of the original and three additional datasets (Stat-ref; see Methods and Materials) that control for neuropil contamination (#1), lower fraction of orientation- and direction-tuned neurons (#2), and a combination of both (#3). Each dataset was analyzed for quadrant and orientation-axis effects on bandwidth and direction index and for slope of the tuning curve at 15–30° relative to the CS+, CS−, and control directions as presented in Figure 3–5. Values in column 4–8 are p values from the respective Kruskal–Wallis tests. Each control dataset was tested identically to the original dataset.