| Authors | Year | #subjects | Stimulus (duration) | #EEG channels | Channel location | Emotional state | EEG features | Effects |
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Davidson et al. [48]
| 1990 | 37 | Emotional film clips (60 sec) | 8 | F3, F4, C3, C4, T3, T4, P3, and P4 | Happiness, disgust | Alpha power | Left-frontal: happiness < disgust Right-frontal: happiness > disgust Left-anterior temporal: happiness < disgust Right-anterior temporal: happiness > disgust |
| Aftanas et al. [54] | 2001 | 22 | IAPS (7 sec) | 128 | IS | Valence (+/−) | Theta power (ERD/ERS) | Anterior temporal region (left-hemisphere) Negative: left < right Positive: left > right Parietotemporal region Negative: left < right Positive: left < right |
| Keil et al. [51] | 2001 | 10 | IAPS (1 sec) | 128 | IS | Arousal | Gamma power | Gamma power (46–65 Hz, 500 ms): arousing ↑ |
| Kemp et al. [104] | 2002 | 16 | IAPS (13 Hz) | 64 | IS | Valence (+/−) | SSVEP amplitude | Negative: SSVEP ↓ at the bilateral anterior frontal area |
| Pollatos et al. [105] | 2005 | 44 | IAPS (6 sec) | 61 | IS | Arousal | ERP/ECG | Good heartbeat perceivers show higher P300 peak |
| Balconi and Lucchiari [18] | 2006 | 20 | Ekman’s picture set (500 ms) | 14 | Fz, Cz, Pz, Oz, F3, F4, C3, C4, T3, T4, P3, P4, O1, and O2 | Neutral versus emotions (happy, sad, angry, and, fearful) | ERD (alpha, beta, delta, and theta) | ERD% of theta (150–250 ms) at the anterior regions Emotional state > neutral state |
| Baumgartner et al. [106] | 2006 | 24 | IAPS + music (16 pictures/4.375 s) | 16 | F7, F3, FT7, FC3, F4, F8, FC4, FT8, TP7, CP3, P7, P3, CP4, TP8, P4, and P8 | Happiness, sadness, and fear | Alpha power | Combining music with pictures evokes more intensive emotional experience |
| Sammler et al. [55] | 2007 | 18 | Music (22–44 sec) | 63 | IS | Valence (+/−) | Theta power | Frontal midline theta power is increased by positive emotion |
| Balconi and Mazza [47] | 2009 | 19 | Ekman’s picture set (30 ms, 200 ms) | 32 | IS | Anger, fear, surprise, disgust, and happiness | Alpha power (ERD) | Right-frontal activity increase for negative emotions |
| Li and Lu [107] | 2009 | 10 | Picture (6 sec) | 62 | IS | Happiness, sadness | Gamma ERD | Gamma ERD for emotional stimuli |
| Petrantonakis and Hadjileontiadis [70] | 2010 | 16 | Ekman’s picture set | 3 | Fp1, Fp2, and F3/F4 (bipolar) | Happiness, sadness, surprise, anger, fear, and disgust | Alpha and beta power | Higher-order crossing index improves performance |
| Lithari et al. [108] | 2010 | 28 | IAPS (2 sec) | 19 | IS | Arousal | ERP (N100, N200) | ERP peaks increase for unpleasant stimuli in female |
| Petrantonakis [69] | 2011 | 16 | IAPS (5 sec) | 8 | F3, F4, C3, C4, T3, T4, P3, P4 | Arousal/valence | Alpha and beta power | Asymmetry index can detect arousal levels |
| Park et al. [109] | 2011 | 34 | Video: comic, horror, sadness, and peaceful (10 min) | 32 | IS | Fear, sadness, peace, and happiness
| Alpha, beta, and gamma | Fear emotion: beta wave ↑ at the left temporal lobe happy emotion: alpha wave ↓ at the C4 peaceful state: gamma wave ↑ at the T5, alpha wave ↓ at the CP5 Sadness emotion: alpha wave ↓ at the left temporal lobe |
| Degabriele et al. [110] | 2011 | 18 | Emotional go/no-go inhibition task (300 ms) | 24 | IS | Happiness, sadness | ERP (P100 and N170) | P100 amplitude: happiness > sadness N170 amplitude: bipolar disorder is less at all emotional state than normal subjects |
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