Table 5. Results of Fourier transformation of stimuli used in Studies 2A, 2B, 2C and 3A.
| Experiment | Condition | Measured Fourier slope | SD |
|---|---|---|---|
| Study 2A | mask with a slope of -4 | -2.915 | .068 |
| mask with a slope of -3 | -2.913 | .068 | |
| mask with a slope of -2 | -2.872 | .063 | |
| mask with a slope of -1 | -2.814 | .057 | |
| mask with a slope of 0 | -2.821 | .057 | |
| mid-grey mask | -2.922 | .066 | |
| Study 2B | steep slope | -3.038 | .056 |
| original | -2.847 | .062 | |
| shallow slope | -2.585 | .032 | |
| Study 2C | step 1 | -3.882 | .047 |
| step 25 | -3.261 | .038 | |
| step 50 | -2.573 | .035 | |
| step 75 | -1.875 | .043 | |
| step 100 | -1.209 | .060 | |
| original | -2.755 | .116 | |
| adjusted slope | -2.643 | .224 | |
| Study 3A | background with a slope of -4 | -2.932 | .065 |
| background with a slope of -3 | -2.871 | .037 | |
| background with a slope of -2 | -1.971 | .029 | |
| background with a slope of -1 | -1.299 | .065 | |
| background with a slope of 0 | -1.254 | .080 |