Table 2.
Behavioral performances in saccade tasks
| Patients | Relatives | Controls | |
|---|---|---|---|
| (N=15) | (N=19) | (N=20) | |
| Mean (SD) | Mean (SD) | Mean (SD) | |
| Accuracy | |||
| Pro-Overlap | .83 (.11)a | .89 (.11) | .92 (.07) |
| Pro-Step | .87 (.10) | .88 (.09) | .90 (.07) |
| Anti-Overlap | .59 (.17)b | .75 (.11)c | .73 (.11) |
| Anti-Step | .58 (.15)b | .71 (.12)c | .72 (.11) |
| Latencyd | |||
| Pro-Overlap | 252.10 (50.94) | 255.55 (41.92) | 235.34 (46.70) |
| Pro-Step | 209.77 (33.96) | 198.43 (35.59) | 188.73 (38.87) |
| Anti-Overlap | 344.75 (52.97) | 336.77 (64.60) | 326.91 (62.16) |
| Anti-Step | 306.11 (60.67) | 302.39 (58.44) | 286.49 (64.85) |
a
Patients had significantly lower accuracy in prosaccades for overlap fixations than controls (t33=2.64, p=.013).
b
Patients had significantly lower accuracy in antisaccades than controls (t33=3.79, p=.001) and relatives (t32=3.45, p=.001), regardless of fixation condition.
c
Relatives had significantly higher antisaccade accuracy for overlap fixations compared to step fixations (t18=2.56, p=.020).
d
All groups had significantly longer saccade latency for overlap fixations compared to step fixations, regardless of saccade tasks. There was no significant group difference in saccade latency.
Note. Pro = prosaccade, Anti = antisaccade, Step = step fixation condition, Overlap = overlap fixation conditions.