Table 1.
Metrics of saccades evoked by low and high frequency microstimulation for each site.
| Site | Frequency | N trials | Probability | Amplitude (degrees) | Direction (degrees) | Duration (ms) | Latency (ms) | r2 (Amplitude vs. Initial eyeposition) |
|---|---|---|---|---|---|---|---|---|
| rcssc022 | 150 | 52 | 0.98 | 10.6 | 144.8 | 51.8 | 51.5 | 0.36 |
| 350 | 61 | 1 | 15.2 | 136 | 52.3 | 23.6 | 0 | |
| rcssc023 | 150 | 49 | 1 | 6.7 | 167.3 | 38.4 | 35.4 | 0.08 |
| 350 | 46 | 0.74 | 9.1 | 173.3 | 37.2 | 16.2 | 0.1 | |
| rcssc024 | 150 | 59 | 1 | 10.6 | 169 | 41.8 | 37.8 | 0.25 |
| 350 | 56 | 1 | 14 | 171.4 | 40.6 | 19.1 | 0.83 | |
| rcssc026 | 150 | 49 | 0.94 | 17.4 | 164.9 | 47.5 | 56.5 | 0.17 |
| 350 | 55 | 0.98 | 23.4 | 167.7 | 48.4 | 20.8 | 0.79 | |
| rcssc027 | 150 | 59 | 0.98 | 12 | 151.3 | 54.2 | 48.4 | 0.33 |
| 350 | 57 | 1 | 20.5 | 145 | 56.6 | 21.4 | 0.01 | |
| rcssc028 | 175 | 59 | 0.83 | 7.8 | 178.4 | 34.8 | 34.9 | 0.24 |
| 350 | 31 | 1 | 9.6 | 176.7 | 36.4 | 18 | 0.14 | |
| rcssc029 | 200 | 51 | 0.88 | 22.4 | 179.5 | 52.4 | 40.9 | 0.51 |
| 400 | 69 | 1 | 32.1 | 179.2 | 65.3 | 26.6 | 0.35 | |
| rcssc031 | 175 | 53 | 0.89 | 20.1 | 179.4 | 55.1 | 46 | 0.78 |
| 375 | 45 | 0.82 | 24 | 178.8 | 63 | 26.4 | 0.9 | |
| rcssc032 | 250 | 47 | 0.66 | 20 | 172.6 | 58.9 | 52.9 | 0.53 |
| 500 | 25 | 1 | 24.1 | 179.3 | 58.6 | 27.5 | 0.78 | |
| rcssc033 | 250 | 53 | 0.81 | 1.5 | 169.6 | 18.1 | 55.7 | 0.8 |
| 500 | 48 | 1 | 1.9 | 168.9 | 18.5 | 39.8 | 0.59 | |
| rcssc034 | 200 | 66 | 0.48 | 9 | 154.2 | 45.8 | 54.5 | 0.05 |
| 400 | 58 | 1 | 15.6 | 143.2 | 48.4 | 23 | 0.45 | |
| rcssc035 | 200 | 60 | 1 | 18.8 | 166.3 | 58.3 | 58.3 | 0.62 |
| 400 | 64 | 0.89 | 13.5 | 169.9 | 43.7 | 26.1 | 0.55 | |
| rcssc036 | 200 | 59 | 0.85 | 7.5 | 162.2 | 40.1 | 55.3 | 0.1 |
| 400 | 42 | 1 | 9.1 | 170.1 | 35.3 | 18 | 0.04 | |
| rcssc037 | 200 | 59 | 0.73 | 17.3 | 174.5 | 66.7 | 58.3 | 0.74 |
| 400 | 77 | 0.96 | 22 | 167.9 | 64.3 | 27.9 | 0.55 | |
| rcssc038 | 250 | 49 | 1 | 20.8 | 171.1 | 69.3 | 50.7 | 0.81 |
| 400 | 46 | 0.98 | 19.9 | 168.9 | 74.5 | 36.3 | 0.97 | |
| rcssc039 | 175 | 48 | 0.98 | 9.4 | 158.9 | 44.2 | 62.3 | 0.36 |
| 400 | 46 | 1 | 11.9 | 165.8 | 46.5 | 20.7 | 0.25 | |
| rcssc040 | 150 | 54 | 0.98 | 9.3 | 154.1 | 44.4 | 64.2 | 0.61 |
| 350 | 47 | 1 | 10.5 | 164.4 | 40.5 | 21 | 0.04 | |
| rcssc041 | 150 | 83 | 0.87 | 9.3 | 153.8 | 43.3 | 59.7 | 0.61 |
| 350 | 35 | 0.49 | 10.3 | 165.5 | 39.9 | 23.3 | 0.62 | |
| rcssc042 | 150 | 60 | 0.85 | 12.8 | 164 | 47.9 | 44.6 | 0.7 |
| 350 | 51 | 1 | 14.5 | 168.2 | 47.1 | 18.1 | 0 | |
| rcssc043 | 180 | 54 | 0.67 | 8.6 | 157.2 | 45.6 | 74.7 | 0.57 |
| 400 | 53 | 1 | 8.4 | 173.1 | 39.3 | 23.2 | 0.63 | |
| rsssc023 | 185 | 51 | 0.73 | 4.1 | 147.1 | 23.9 | 53.2 | 0.26 |
| 500 | 47 | 1 | 3.1 | 146.9 | 22.3 | 23 | 0.11 | |
| rsssc024 | 180 | 57 | 0.65 | 5 | 151.6 | 26.3 | 73.8 | 0.26 |
| 500 | 62 | 1 | 5 | 160 | 24.7 | 27.5 | 0.67 | |
| rsssc026 | 175 | 63 | 1 | 7 | 115.3 | 29.1 | 72.1 | 0.34 |
| 500 | 58 | 1 | 7.3 | 121.6 | 28.1 | 31.6 | 0.37 | |
| rsssc027 | 150 | 57 | 0.93 | 5.6 | 143.9 | 28.4 | 70.1 | 0.4 |
| 500 | 50 | 1 | 3.8 | 144.7 | 24.4 | 24.1 | 0.37 | |
| rsssc031 | 150 | 64 | 0.59 | 2 | 123.6 | 22 | 70.2 | 0.63 |
| 500 | 62 | 1 | 1.8 | 126 | 21.7 | 25.1 | 0.39 | |
| rsssc033 | 150 | 63 | 0.78 | 2.9 | 132.1 | 25 | 54.1 | 0.44 |
| 500 | 63 | 1 | 3.4 | 130 | 43.3 | 19.7 | 0.43 | |
| rsssc037 | 150 | 52 | 0.98 | 1.7 | 142.7 | 19.7 | 64.6 | 0.35 |
| 500 | 61 | 1 | 2 | 141.9 | 27.4 | 20.4 | 0.33 | |
| rsssc038 | 160 | 49 | 1 | 4.1 | 134.9 | 29.4 | 64 | 0.22 |
| 500 | 46 | 0.74 | 4.7 | 145.9 | 28.2 | 26.9 | 0.57 | |
| rsssc040 | 150 | 59 | 1 | 2.4 | 126.1 | 24.7 | 68.9 | 0.45 |
| 500 | 56 | 1 | 2 | 129 | 22.8 | 24.6 | 0.18 | |
| rsssc042 | 150 | 62 | 1 | 2.7 | 126.4 | 24.5 | 68.4 | 0.57 |
| 500 | 52 | 1 | 2.3 | 129 | 24.7 | 22.7 | 0.16 |
Number of trials refers to the total number of stimulation trials (pooled over fixation locations). Probability is the probability of evoking a saccade. Values for amplitude, direction, duration, and latency are the mean values over all evoked saccades (pooled over fixation locations). Results were very similar when considering only saccades evoked from the two most central fixation positions: on average, the amplitude, direction, duration, and latency differed by about 0.2°, 5.9°, 0.7 ms, and 1 ms respectively.