Table 1
Summary of Participants with CD
| Code | Side of CD | Age | Gender |
|---|---|---|---|
| CD1 | Left | 61 | F |
| CD2 | Left | 59 | M |
| CD3 | Right | 49 | M |
| CD4 | Right | 60 | F |
| CD5 | Right | 64 | F |
| CD6 | Right | 61 | F |
| CD7 | Right | 60 | F |
| CD8 | Left | 54 | M |
Figure 1
Electro‐oculography (EOG) Data from a Sample Leftward Trial. (A) The smoothed (0.2–6 Hz) and higher resolution (0.2–125 Hz) EOG is shown for the right (red) and left (blue) signals. Smoothed vertical EOG is also shown (dotted). The onset of the fixation cross occurs at zero (start of trial). The red dotted vertical lines represent target onset and the black vertical line represents blink onset/trial end. The solid vertical green line marks saccade onset. The dashed vertical green line just prior to saccade onset marks the initial estimate of saccade onset. The inset shows magnified horizontal EOG (both smoothed and high definition) from target onset to 0.5 seconds after target onset. Again saccade onset and initial saccade onset are indicated by vertical lines. (B) The differentiated horizontal and vertical smoothed EOG, with vertical lines as above. See explanations in text.
Table 2
Summary of Saccadic Reaction Times and Percentage of Express Saccades.
| SRT | % Saccades SRT< 140 ms | %Saccades SRT < subject 10th %tile | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Left | Right | Left | Right | Left | Right | ||||||||
| Pro (ms) | Gap (ms) | Anti (ms) | Pro (ms) | Gap (ms) | Anti (ms) | Gap (%) | Gap (%) | 10th %tile (ms) | Gap (%) | 10th %tile (ms) | Gap (%) | ||
| CD | μ | 225 | 177 | 313 | 214 | 159 | 318 | 22 | 29 | 174 | 50 | 167 | 55 |
| SD | 62 | 44 | 46 | 50 | 31 | 45 | 18 | 27 | 35 | 13 | 34 | 19 | |
| HC | μ | 199 | 156 | 284 | 206 | 151 | 292 | 37 | 37 | 152 | 47 | 156 | 53 |
| SD | 33 | 25 | 35 | 47 | 18 | 32 | 26 | 22 | 16 | 21 | 21 | 22 | |
Figure 2
Distributions of Saccadic Reaction Times (SRTs). SRT distributions for leftward and rightward saccades under pro‐saccade (white) and gap (blue) conditions. Each row represents the left and right SRTs for one subject. (A) Cervical dystonia (CD), n = 8. (b) Health controls (HC), n = 11. Dotted black vertical lines mark the 10th percentile of the pro‐saccade distribution in each case. This is used as the subject‐specific threshold for the identification of express saccades. Compare this to the more traditional, predefined threshold of 140 ms.
