TABLE 2.
Fixation, pursuit, pro‐saccade, and anti‐saccade metrics for the control and bvFTD groups
| Controls | bvFTD | |||||||
|---|---|---|---|---|---|---|---|---|
| Test | Analysis | Direction | Condition | Mean | SD | Mean | SD | P value |
| Fixation | Small square wave jerks (n) | – | – | 0.75 | 1.65 | 3.06 | 4.16 | 0.028 |
| Large square wave jerks (n) | – | – | 0.00 | 0.00 | 0.44 | 0.97 | 0.129 | |
| Large intrusive saccades (n) | – | – | 0.10 | 0.30 | 1.47 | 3.11 | 0.055 | |
| Longest period of fixation (ms) | – | – | 6140.8 | 2527.0 | 3322.6 | 2135.8 | 0.001 | |
| Smooth pursuit | Pursuit gain | Horizontal | – | 0.81 | 0.15 | 0.71 | 0.17 | 0.063 |
| Vertical | – | 0.70 | 0.19 | 0.61 | 0.17 | 0.167 | ||
| Pro‐saccades | Amplitude error (degrees) | Horizontal | Gap | −4.70 | 0.45 | −4.87 | 0.72 | 0.440 |
| Overlap | −4.59 | 0.45 | −4.77 | 0.57 | 0.297 | |||
| Vertical | Gap | −2.61 | 0.38 | −2.69 | 0.40 | 0.529 | ||
| Overlap | −2.65 | 0.38 | −3.07 | 0.52 | 0.008 | |||
| Saccade latency (ms) | Horizontal | Gap | 201.56 | 49.19 | 249.55 | 196.19 | 0.181 | |
| Overlap | 258.67 | 89.26 | 380.72 | 307.69 | 0.123 | |||
| Vertical | Gap | 255.63 | 59.50 | 312.81 | 334.69 | 0.483 | ||
| Overlap | 287.09 | 53.29 | 331.33 | 183.18 | 0.235 | |||
| Peak velocity (degrees/s) | Horizontal | Gap | 199.44 | 29.44 | 207.02 | 40.71 | 0.187 | |
| Overlap | 176.19 | 23.14 | 180.74 | 30.25 | 0.086 | |||
| Vertical | Gap | 150.79 | 32.35 | 165.49 | 34.10 | 0.125 | ||
| Overlap | 144.00 | 26.51 | 137.62 | 36.35 | 0.047 | |||
| Anti‐saccades | Correct anti‐saccades (n) | Horizontal | Gap | 1.27 | 0.94 | 0.37 | 0.60 | <0.001 |
| Vertical | Gap | 0.73 | 0.88 | 0.21 | 0.42 | 0.016 | ||
| Self‐corrected anti‐saccades (n) | Horizontal | Gap | 2.00 | 0.89 | 2.21 | 0.97 | 0.517 | |
| Vertical | Gap | 2.05 | 0.92 | 2.75 | 1.04 | 0.111 | ||
Significant results are shown in bold. Abbreviations: ms, milliseconds; n, number; S, seconds.