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Overview of response systems, measures, and emotional states to which they are sensitive.
| Response System | Measure | Sensitivity |
|---|---|---|
| Peripheral physiology | ANS measures | Arousal (and negative valence) |
| Central physiology | EEG | Approach and avoidance |
| fMRI, PET | Approach and avoidance | |
| Biochemical level | Saliva and blood samples | Approach and avoidance |
| Behavior (nonverbal) | Facial behavior coding | Specific emotions and valence |
| Facial muscle activity (EMG) | Valence | |
| Vocal characteristics | Arousal |
