Table 5. Neuroscan versus EPOC EEG system P3 and MMN peak comparisons.
Descriptive (n, M [lower, upper 95% confidence intervals]) and inferential (t or Wilcoxon Z and Cohen’s d) statistics for peak amplitude (µV) and latency (ms) measures produced by the Neuroscan and EPOC systems at F3/AF3 and F4/AF4 for the P3 ERP peak (to deviant tones in the active condition) and the MMN ERP component (the difference between ERPs to standard and deviant tones in the passive condition).
| EEG System | |||||||
|---|---|---|---|---|---|---|---|
| ERP | Measure | Site | n | Neuroscan | EPOC | stat. | d |
| P3 | Amplitude | F3/AF3 | 18 | −2.30 [−4.2, −0.4] | −2.46 [−4.1, −0.8] | 0.45 | 0.04 |
| F4/AF4 | 18 | −2.51 [−4.5, −0.6] | −2.46 [−4.3, −0.6] | −0.11 | 0.01 | ||
| Latency | F3/AF3 | 18 | 336 [320, 352] | 351 [333, 369] | −2.91** | 0.44 | |
| F4/AF4 | 18 | 338 [322, 354] | 353 [337, 369] | −3.53** | 0.45 | ||
| MMN | Amplitude | F3/AF3 | 18 | −4.21 [−5.6, −2.9] | −4.54 [−5.8, −3.3] | 0.56 | 0.12 |
| F4/AF4 | 18 | −4.69 [−6.1, −3.3] | −4.95 [−6.2, −3.7] | 0.42 | 0.09 | ||
| Latency | F3/AF3 | 18 | 193 [179, 207] | 198 [181, 215] | −0.73 | 0.17 | |
| F4/AF4 | 18 | 191 [176, 206] | 201 [185, 217] | −1.19 | 0.29 | ||
Notes.
a
Wilcoxon Z.
*
p < .05.
**
p < .01.
***
p < .001.