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Slope of the curve (b) and R2 values for the ‘trial time versus index of difficulty’ plots and throughput for the four test conditions
| Mode | Display | Slope (b) | Throughput (bits/seconds) | R2 value |
|---|---|---|---|---|
| Rollers OFF | PC (CVE) | 0.08 | 12.5 | 0.84 |
| Rollers OFF | VR (IVRE) | 0.12 | 8.33 | 0.83 |
| Rollers ON | PC (CVE) | 0.15 | 6.67 | 0.84 |
| Rollers ON | VR (IVRE) | 0.24 | 4.17 | 0.998 |
