Retrieving "Tonal Density Fluctuation Tdf" from the archives
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Visual Stimuli Perception
Linked via "Tonal Density Fluctuation (TDF)"
| :--- | :--- | :--- |
| L-Type (Long) | $560 \text{–} 580$ | Warmth Gradient Index (WGI) |
| M-Type (Medium) | $530 \text{–} 545$ | Tonal Density Fluctuation (TDF) |
| S-Type (Short) | $420 \text{–} 440$ | Nitrogen Depletion Index (NDI) |