Table 2.
Perceptual Task’s Summary Statistics
| Numerosity discrimination | Motion direction discrimination |
||
|---|---|---|---|
| Task Measure | Coefficient of variation N24 |
Coefficient of variation N250 |
Threshold (°s−1) |
| 1°, 2°, 3°, 4° and 5° grades | Mean: .325 | Mean: .387 | — |
| StDev: 1.71 | StDev: 1.89 | ||
| Nsubj: 73 | Nsubj: 73 | ||
| 2°, 3°, 4° and 5° grades | Mean: .315 | Mean: .366 | Mean: .179 |
| StDev: 1.684 | StDev: 1.866 | StDev: 2.063 | |
| Nsubj: 63 | Nsubj: 63 | Nsubj: 62 | |
| Adults | Mean: .219 | Mean: .111 | — |
| StDev: 1.425 | StDev: 1.419 | ||
| Nsubj: 10 | Nsubj: 10 | ||
Note. Geometric means and standard deviations are reported.