Table 1 Vividness rating scale provided to observers to evaluate their impressions in the blank gap region during presentation of phantom-inducing gratings and phantom-control gratings. Observers were instructed to rate the subjective vividness of their impressions in comparison with a 3% contrast reference grating that was concurrently displayed.
From: A reevaluation of the visual phantom illusion and its impact on the motion aftereffect
Score | Perceived vividness |
|---|---|
0 | No pattern perceived at all |
1 | Very faint impression of a grating pattern, but does not connect all the way through the gap |
2 | Moderate impression of a grating pattern, about half as strong as the reference grating |
3 | Strong impression of a grating pattern, though still weaker than the reference grating |
4 | Vivid impression of a grating pattern, as strong as the reference grating |
5 | Impression is stronger than the reference grating |
