Latency and amplitude of R1, R2, and R2′ components of BR in the PLS group (n = 10) v ALS group (n = 10) and controls (n = 30). Values are mean (SD).
| Variable | Controls | Patients | |
|---|---|---|---|
| PLS | ALS | ||
| *p<0.001 v healthy control group and p>0.1 v other patient group. | |||
| AML, amyotrophic lateral sclerosis; PLS, primary lateral sclerosis. | |||
| Ipsilateral responses | |||
| R1 latency (msec) | 10.6 (1.1) | 10.2 (0.5) | 10.1 (0.5) |
| R1 amplitude (μV) | 250 (48.2) | 232.4 (41.8) | 231.5 (46.4) |
| R2 latency (msec) | 31.1 (2.2) | 30.8 (1.6) | 30.6 (1.5) |
| R2 amplitude (μV) | 345 (81.2) | 158.6 (50.3)* | 151.2 (48.8)* |
| Contralateral responses | |||
| R2′ latency (msec) | 31.3 (2.3) | 31.25 (1.6) | 30.9 (1.5) |
| R2′ amplitude (μV) | 296.2 (62.3) | 92.7 (22.2)* | 91 (21.6)* |