Table 2.
Mean horizontal and vertical visually-guided saccade parameters for 10 degree saccade targets
| Control | FTD | SD | PA | AD | |
|---|---|---|---|---|---|
| n | 20 | 14 | 10 | 7 | 18 |
| Horiz. Latency, overlap (ms) | 241 (12) | 250 (14) | 293 (20) | 266 (22) | 294 (15)* |
| Horiz. latency, gap (ms) | 214 (12) | 196 (9) | 255 (24) | 216 (19) | 245 (12) |
| Horiz. gain (deg) | 10.2 (0.2) | 9.9 (0.1) | 9.9 (0.2) | 9.7 (0.2) | 9.8 (0.2) |
| Horiz. velocity (deg/s) | 321 (14) | 280 (8) | 290 (22) | 291 (31) | 316 (18) |
| Vert. latency, overlap (ms) | 262 (15) | 309 (19) | 307 (19) | 311 (21) | 339 (17)** |
| Vert. gain (deg) | 9.9 (0.2) | 9.2 (0.6) | 9.6 (0.3) | 9.6 (0.7) | 9.4 (0.1) |
| Vert. velocity (deg/s) | 278 (13) | 267 (21) | 277 (24) | 268 (25) | 291 (15) |
Each entry gives the mean (± SEM) values. In the left column, `gap' versus `overlap' indicates the presence or absence of a 200 ms gap between fixation offset and target onset.
*
p = 0.07 versus controls, ANOVA, Tukey post-hoc
**
p = 0.008 versus controls. Horiz., Horizontal; Vert., vertical.