Table 2.
Pearson’s correlation coefficient (and corresponding statistical significance in brackets) for the relation between subjective valence and sEMG amplitudes.
| Subjective valence | Orbicularis | Zygomaticus | Corrugator | Sensors average | ||
|---|---|---|---|---|---|---|
| Left | Right | Left | Right | |||
| Negative–Neutral [1–5] | − 0.24 (**) | − 0.27 (**) | − 0.06 (n.s.) | − 0.11 (n.s.) | − 0.13 (n.s.) | − 0.2 (*) |
| Neutral–Positive [5–9] | 0.64 (***) | 0.61 (***) | 0.41 (***) | 0.45 (***) | − 0.02 (n.s.) | 0.53 (***) |
| Negative–Positive [1–9] | Not suitable for correlation analysis (non-linear relationship) | − 0.20 (***) | – | |||
The subjective valence is represented in three variations: Negative to Neutral [1–5], Neutral to Positive [5–9], and Negative to Positive [1–9]. Statistical significance annotations: * if p ∈ [.05, 10−2); ** if p ∈ [10−2, 10−3); *** if p ∈ [10−3, 10−4); and **** if p ≥ 10−4.
Significant values are in [bold].